Your arguments. Welcome back to the last section of this domestic meeting and the section of the city. I'd like to use myself from the University of the section and and the sections, the first one my myself and save showing how exclude DNA added to resogions and alter the DN averse. And in the second be parado her system she developed using Boyd to actually learn more about Ss signaling And in the Herst, in the studies on X and loss, which we know is really chemosis. Not very, I really look forward to learning more about this, talking about crops, we did very important discoveries in the past. Microns, about a new techniques developed to understand more about this An and the last developed Phys Gamine the Frisby. And he's going to be talking about how the developed system using Pbgd make individual gene engineering and last as the layer. And he's going to be talking about his work, how he optimized the musical game system. He made very efficient pins and jeans. So this sport and let me start mine and work was dot by attendant, she was held by flashy. And this system is action by most obvious, beautiful work that sissy guided signal static and the first one which was discovered and the tax pates was the physical gas line. And we know that it may blows in the Dna base, but it's not always the case. It's been shown previously in animals. And as that cans make similarly over times, rapidly, recently and recently implants to show that can also make starts and the Pac, these cats and and Nat have to be dependent on the Gic context of the site if you'd like to, multiple. So as a take usually in Comcast, there is another recently discovered spenser clip which make By second vs the DN base. What happens after rev the levels in the DNA rigs itself, it alerts itself on DNA shines and one of the most active ones in visit the Ces is the land pathway which is tries to slip together the broken VA. And if it doesn't work and the ends can be exposed to the places and then they can ape to micrologycausehlesssdes. The pathway is verticals, micromole or automation pathway, beginning and get further reset and also be involved in HR. But will be news normal, engage the autogenic pathway and the position the Desford to use. We employ the reporter. A simple and very useful physically target and indication. A loss of popping, addition in acid, resulting globalizing colors. We can the cells comps and we can recover all cells very easily with some NA and the charge exploration, introducing the Excel and give them on globalizing plates and nobis, pates and we the frequency of editing as percentage of Biz cells. We also poles what is happening in these sides. Imagine the Cd makes the staggered cuts and get farther sequence, but you appreciate probably it's quite similar to the cuts you can make with station size. What you do with one cooling because the DNA you provide the DNA commentary ends lug together you figure what you want. You can use the Cd system to gates very efficiently just by using these overhangs that its to the S with the Cdm and then add the short pads. So these are poles in the DNA containing pole frames. And they have overhangs to the Cdc side that hopefully we can move this sequence efficiently. Into the Cdpap was just CP one RB on, and as T is not very efficient, usually we can add over 5% itself. In the experiment we just added it results in editing, but when we stood the Palm is actually the frequency of editing went up from almost 4% to 47% first on this plate. And when we did the okaying, efficient looking system and before we want to champagne as my student look statement, what is happening, uh, in this code size? And it was applies only a few molecules we integrated into the Cots. It was unexpected. And then, and because of this one was limited by gene and the experiments and focus on the determine what happens if we just change the terminal, the shoulders. And with the Npcs, we play with the fibers with Atb three movable and plans the Ssds of them, the short moles able to boost the fitness of anything very, very efficient. Then we obviously sequence all of ponies from independent discernment. You can see here in the To. These are experiments with R and B, only what you recover, the lows of deletions and insertions, and this virtue is in ponies. We also added the shortened dealing workers. 5.3 Bible Warning, it's quite similar. We use plebs, with blonds, we do more insertions and indeed when we analyze the sequences in Del, we found that most insertion, what we found here derived from the voles we want to, what we concluded from this is that the oleic, those movements with 5.3 Bibles are not very efficient in boosting integrated indication. The ones with blond intergrate usually has Fps then size. So 696 double the size of the double individual. And I did, my overhangs usually adds this leak. This you can see here a by increasing the size each port from five, which did not really boost the city, but we just doubled it. It went up from basically over 5% to 30% lingual cluster which is used guides, the toes were not very efficient and the foot some efficient section as the Tled ones and then we pop together. So these are the double standard ones and these are the class size sided ones that's efficient, located might be big secondary structure. When you use the four programs, you always find secondary structures. And because of this late use legal which doesn't. Second for example, policy and indeed we used more structured do it didn't boost the frequency, medicate. And then what we wanted to test is what happens. Candied, if we made the Legos resistant to nucleases and infield use these bonds, madest nucleases, this is what we added to the Dei, and what we found is that when we added these post bonds, they completely acknowledged the Dicot medicate. In contrast, when we added the modifications to the middle I actually starting is frequency affected from this. What we concluded that the terminals are important and it's likely that terminal medical, so currently there is no known mechanism for this but we have uses. What we think is that when we have a send the break, then the rear machinery identifies it and get reputed. But if you have access of DN in the cell, then the rear machinery actually gets sequenced away from the physical outside the end, the DN can act as a Po, and we do hypothesis. We employed different dynamics. We generated mutants in the major, those in the DNA pathways and obviously the Galena, because it been established that the combined was in the DNA temperatures. And we also generated mutant pathway in the detention pathway, which assesses DNA in the Nclogy pathway, and then tested what happens in the mutants. And what we found is that this is the, all this is the boost, we see these oligos regions and in the mid, even below adding the oligos behaviors being record what it showed is that is likely to be involved in this part. And then we added nuclear types types to this giant. Together with this vision, it boosted the efficacy of everything suggesting that additional factors might also be involved. And indeed we tested the medians. Boosting effect must be used compared to the but still adding Obs increase the frequency of ethics that these also involved in. No Inh. Just like to summarize that, Nosings, a deploy by sequencing the proteins and imbalance between the Ninos. This is funders and thank you much for Postdates of DNA process. Microcod chance to how big? When we haven't nece we haven't tested long walks because the only was what we need to get applies, the long defective. Ode. Thank you much. Have you actually tested the effects of the concentrations of the. Yes. So probably expected, so it has nine posters, so it was like maybe ten times. I at least that. So it has historical conditions like 0.5 to two medical and there's a kind of concentration response. Thank you. We tried moles, mismatches, but these are actually nobles. So the, the Dobson division Gd have nothing to do with any conditions. That's fair. I mean, mismatches in the doubles land, all that would attract additional repair. Okay. I see your point. We tried Dobson ones with different ty structures like loops and other things and then support. And in terms of efficiency, I don't know my heart very similar to the normal defined ones. I think it's very nice to see that maybe after all the starting us and Picor do check if you get more, more specific integration with the small pieces rather than normal set we are doing the experimenter sanos the front. The additional back. Yeah. It seems like the what the oil is, it doesn't really matter. Did you just use like the shear stands for DNNA and that work? Yeah. You see that? The size desk, So Okay. It works from 540, 5% of DNA upwards. And we haven't tested like briefly on the door along the ones, so Yeah, But in theory, yeah. Instead of wording all it goes, you use the jets. Yeah, I did. Thank you much. Can you hear me? It's great. Great. And the next by? Yeah. Hello everyone, and scoop. And also the opportunity to present some our work today. During my talk, I'm going to present how we review the proxies of the 1.2 using a tool based proximity labeling as a new method to map protein interaction networks in the, the role of the vesicle is using protein and plastids. But one is an ongoing question and research years, many hypos hypothesis about expansion being involved in titled Bioassay and Coping With Man Stress. So it was already found in apitosis, that a division of the one tos of Tyler. As you compare for example, the type with a knocked down urgent and oral out of the one which has empty lots and can only survive from, but one is not only involved in Tyco biogenesis. The oligo manifestation of the one in manoch structures is catalyzed by the Hsp 70 chaperone system. Together with the chaperone Ch two and Cch. One further one can create membrane keywords to transfer lipids from the outer below to the Tyll membrane. When there are stressed. For example, when there is highlight or oxidated stress, this leads to an imbalance in the protein homeostasis. What results? For example, protein oxidation or toxic aggregates. In Moog there is AP one parallel named two expressed under stress condition and Ebit one with two helium. That involved in sense and coping with membrane stress together with molecular chaperones and proteases. In addition, it seems that the lives are involved in Posi. Now our question was which protein works together with the Ops in the different function? And to address this question, one to establish proximity labeling. In general, proximity labeling is based on a fusion of the late protein here in yellow to the equally in red, which activates biotin by adulation while at P is consumed. In the next step, the reactive biotype, the yellow dots normally transferred to a specific lysine residue of the aquinas. A couple of years ago, by introducing a single point mutation, this specificity was lost. The reactive biotin, Alp is lease, and can then attach to exposed primary lines of proximal proteins in the labeling radius of ten nanometer. Proximal blue and creek tal proteins equate, get labeled after cells and protein extractions, the inlaid proteins are enriched straps and then analyzed them. Stratum try. The problem with this original method was that it has a labeling time is up to 18 H. To overcome this problem, several more mutations were introduced, resulting in Tv that achieves the same labeling efficiency in 10 min and had a slightly bigger labeling radius is 35 each. During our experiment, we took different examples. On the one hand we had the imperfection, these are holes. Before incubation of the Bs. We also took a blow through example for Utd proteins and after illusion of the biotinylated as the lates analysed by MS. As you already heard to talk of Luke. You're already familiar maybe with the system as it's already also a parallel established in parallel. At the beginning of our project, we used the modular cloning system to fuse our proteins with the two. As we were interested in the Ip system 1.2 our bits with the Ctu fusion, The analysis for fusion protein accumulation using antibody against A showed a strong expression for the one fusion protein impart. As already mentioned, important to choose the controls. On the one hand we included a non transformed Ubm four type to have a control to separate between proteins bitulatedtuorfdogenictulated protein and contaminants Ubi four. We observe no fusion protein. As a second control we chose an Mary's an unrelated protein. We targeted logs and also procedure to fusion. In all the experiment we chose to work with two transformers by then expresses the to statin higher level. Then next step we had to find the optimal concentration of externally added tine and sic optimal time. Therefore, we tested different conditions for water and also control. And everything was analyzed by 17 coupled days. On the one hand, we tested without applying any tine, but we also tested by treating the cells with Tine over a time period of 24 H. We observed without adding some Ote, strong Atul cell Byu of one and also additional biotulatedtinesupon. Adding tine, the signals increased up to 6 H, but not further. When the cells were incubated up to 24 H, we also tested different concentration and we observed enhanced botulationhen treated with 1 million Mod and became more or less to the same size as in this study. And we also tested the Lim four words where we observed no increase in timulation when we incubated the cells with up to 18 H compared to the nonres. Now for our Map one, we incubated cells with 1 million molar for 4 H and the results are going to show you the one Hetp Ft and on the other hand, Oleds focused on the one hand on continuous did, but we also treated as cells with hydrogen peroxide for 4 H in parallel to reduce stress. As you remember that the Tress and Cox stress in the input fracture, we observe already the strong cumulation again after the one too. And it's a bit hard to see, but you see also some additional bitlines. Both conditions in the strains, biotinylated proteins are then strongly enriched. In the dates, under both conditions, in all of the five strains. While you see a reduced pattern in the Um four, we only have endogenous bitumulated proteins or contaminants based on the immunoblot, We observe no huge differences in the bioaccumulation pattern or the number of biotinylated proteins when we compare stress with the evolution of data Shows you now. Comparison of the protein balance after the one versus the cherry line. After the subtraction of the contaminants or undergoing proteins from the four we see in two protein and the one and already no interaction pattern and green like H seven and Cv two. And under stress conditions the non interaction 1-2 verified as well. We found several proteins with fraction based on our study we named the proximity labeling proteins. We found some of them are already at hand conditions, but most of them are found under the stress treatment. We also found some proteins involved in the bioenergy complexes as a search group. We found some proteas that are probably involved in the regulation of photosynthetic electron taking oocyte and two together. There are proteins found in both proxies only under continuous lab. For example, we have Chp one in both Proxima Pl nine only in the one Pxi or P one and P one only in the two proxy. There are proteins only found under stress conditions. For example, VP 3.4 and both proxies. There are several more Ps only under stress and little one Proxim. We also identified clip three in proximity to one. Under stress proteins form in both proxies and above conditions for 1.2 or five in both proxies. Now as a group of concept, we went for Sip proximity labeling to confirm some of the proteins also in proximity to B one hand we chose P two as L proteins with an structure as a second protein. Chose Ptl one as volutes involved in regulation of proxy electron flow. Coming to a plea twos novio, We observed already in the unilat analysis the presence of P one in the late fraction of VP two. But you see that the signal is reduced in the liar control and was absent in the four. This was also verified by Ron S data, so there is one and proximity to VP two. In addition, we found two other proteins, plea ten and P three. They were also identified before. In the P for PT one, we only found one in the proximity P one and P two. Mainly or probably because the study was performed at an condition where we express, we also found Pl proteins and also some proteins involved in the bios of Y protein complexes and these were also found before in our study. As a main proof, we found several Tes, or already known proteins that are involved in the regulation photosynthetic electron flow or specifically in the cyclic electron flow complex. Take out our results together successfully established proximity labeling in the class using the Td. We also use modal system to generate our constructs. To use our Td, we worked in early experiments with several controls that we can differentiate between endogeneity proteins and pots. But also we had to consider positives and what's negative. In our study, yeah, what we now did was to try to crop interaction network. We found proteins that are involved in the biogenesis of Nacl 113 or Chf one. We also found the shale clip history in proximity on an stress, we found many annual proteins we call the Pl media stress. This gives us an idea that they might be involved in coping or sensing with membrane stress as well. Based on some overlaps between the viboxium and the Ptl one Bxi. There might be also that there is connection between the Vip system and cyclic flow if you want to try proximity, labeling in your lactates are also available at the Clams Center. At the end of my talk, I want to say to people involved in the projects or supervisor a huge steps, she did the main work in establishing method. Melissa just and were involved in performing the rest of pop experiment and static under the MS measurement as well as the funding. And your further attention, I'm wondering whether you try, did you go achieve? Why back compared to a mutant back? G one mutant? Or mutant? Yeah. So at the moment we're just working with the UBM four It type strain, but we're also thinking to change the background so that we also tried to do mutant background but it's not yet done. Do you know what is the proportion of the legible Id one versus the Gm one? Because I guess the two. I don't know that. Did you take a look at the fusion protein and the shares the core somewhere? Yeah. Actually, what's missing in our work yet, it's the localization. Also for our proteins we count and also for example, to do core localization. But when we go back to the slide we screen for positive transformers, you see by sharing we often observed this kind of tone. We were thinking that maybe it could be some precursor proteins or that it's not fully located in the lost, maybe it's partially also located in the string. Therefore, we are trying to get a new control so that we go away from arterias control and try to find better controls. Can you identify the Cies which video? The ten in the aspect. Can I tell you something about decide interactions between and those in general, the Biotin binds crew exposed a minus, minus. And it's not showing, or the whole study does not show you a clear interaction. We're just talking about proteins in a specific radius. The method does not show you a clear interaction, for example, between one and the Pls that they directly interact. It just shows you. Ok, at this specific moment, we find these proteins in proximity to two our weights. Yeah, I was wondering Baker to copies which are membrane copies. Membrane. And then look at because Yeah, so maybe you just answer this question you ordered because that many copies action you actually found which are in the membrane ID involved in Cyc. I guess when we started the project it was mainly because we are working a lot with S and for the reciprocal experiment or proteins that found some proteins involved proteins, Cedars, other sated resalable proteins in the stroma. But we also have some data in our publication where we perform the tool bid on extracted membranes. So that is also a second approach that we have in the publication. Another question from the label, that contents from data, I would say on one side, on the one side I would say yes, on the other side. I would say it depends a little bit on how is the structure of your protein and how many lions are there where labeling can happen. This requirement at share is also known to Gilor to spit. Okay. Yeah. Let's the next, there is hello. This time slot at Louisiana Saving Therapy is they talk to me about how plan sales collectively migrate during pneumonia cases. So just the overview of collective migrations, movement and groups that affect individuals in the group, their behavior. It can be used to optimize nutrient conditions as it does in my research. And this is well studied in other species like animals and bacteria, but never has been reported in clammy until now. Also well studied in clammy is the photo tactic mechanism. You see this example is Pts on the top left here, RCC 124 is giving us a negative photop tactic response. We know how this happens. We know that there are channelled involved in detect light and we know the pathway that follows that to induce this photo tactic response. But for example, when I see a positive Pmo tactic response and that the ***** population of plans bottom, entire portion of the chemical breaking is part of the chemotactic response. Nobody knows how this happens. There's not much literature on chemotactic mechanism. What receptors are involved, what pathways happen after the chemicals are detected. And just gotten up. So that led us to really want to investigate this chemotactic mechanism. And as we've seen in this conference, there are a lot of studies on phototaxis, how it happens, and there's a lot of things we can do around it, but not so much on chemotaxis. So me and Alex are the only ones talking about chemotaxis in this entire conference. Right? Not much literature exists. So we just want to elucidate the mechanism that's is working on. And when I speak about chemotaxis, I'm specifically talking about ammonium because there are other chemoattractants that are study. But we're going to focus on ammonium for our research just to give you an idea of the experiment for design. Because this is a modified pet dish assay that not many people use in literature before. When Chemotaxis study is studied in test tubes or capillary tubes, it's not really able to be visualized like this in a spatial gradient. Let's just put it in the fetus, in trog latina. Then we create auto blocks to create our chemical gradient from the, we go from no nitrogen to excess nitrogen. And then we expose it to control homogenous light. Usually white light where we can change light The strains that we're going to be talking about today. When I say will type, I'm talking about CC 124 and not so much CC 125. And just to point out that it's lacking that Ag one gene and then I also use Co 53, you know that's a clip parent strain has a normal Ag one gene. And then I also have some transgenic strains, number six and number 13 which have a recombinant age gene. Just to say like we've seen in early example of phototaxis, lacking that Ag, one gene produces that strong negative phototaxic response that we saw earlier. I also want to let you know that we do these experiments over 24 h. So like the photo tactics, these experiments are done over minutes, maybe 5 min, 10 min, but I'm looking at the entire 24 H. The kind data that we can start to visualize from that assay is time. That's video. So you see here, just stop. You see here a positive chemotactic response as it's moving from top to bottom. And we also did a little modeling on our gradient. As a legend, her experiment with Bet just to quickly show this, so we know our division coefficient and we know that our gradient is stable over that full 24 h. Since we are in the first looking at the type of experiments for this long, we want to make sure that the chemical gradient that we're actually creating stable over time. And also a way that we can visualize our data. I create these photost, look at them a 036 to over 24 h. So this is the same feature just five times. And when I say 0 h, I mean the moment that the glocks are placed into the homogenous population planning. The first result I want to show you is that using light enhances ammonium chemotaxis. When I say that I do these experiments in light, usually I've done them in many different colors of light. And I've even done them in the dark in CC 124 and just so this photostat. So over time you can see this positive chemotactic response. Same same exact experiment done with the dark. Positive chemotactic response, but not so, it's not so aggregated. So just to small suggest that light is enhanced chemotaxis. And then we also develop a way to quantify the intensity over these photostats and develop an equation to scale it on the chemotactic index. So you can see a much higher chemo typic index for the might than the dark. So just to say like further away from the one is a more intense chemotactic response. So just a way to quantify that you are seeing what we're seeing visually. The next result I'd like to show you is a little interesting. Now we want to compare step back a little bit and compare phototaxis and chemotaxis. And then one to 4.4 533. We did these heat maps basically of the different photostats that you see that coordinate with each. We saw some gradual movement and phototaxis. We've seen a really cool thing of 4533 and that some positive negative. But what we really focused on here is the first instance. Started seeing some collective migration. So if you see where the orange and yellow colds are, it almost looks like at 3 H and 6 h in both. They almost wanted to collect in the center of the dish before they decide to move along the chemical Brady. So that's what we were more interested in to investigate. And then we also considered the fact that photothtechnic response, which you can't really eliminate phototaxis in these experiments. We wanted to eliminate type of directional device that might have caused them to collect but maybe it's not chemical. Brad, again, we did this in C124, CCC 4533. So the top row it goes by, top second row goes by left, third les boys, right? So you can see in all of these in CC 14, they collect in the middle first and then decide to respond to that chemical gradient in all directions. But before 533 we saw something different. So we didn't see this response at 6 H. There's really spread out. Within 12 H, we start to see circles that I drew that there's a little more intensity there. But eventually they do respond positively to the chemical radiant. But they don't collect like CC one to four you had who blocks that? A one gene. So we are determining that CC one God has enhanced collective migration, which in turn enhances stability to Mosconemonia. Then we wanted to investigate the role that this ad one gene or protein was playing in chemotaxis. That's when we obtained the transgenic strains, number 60, number 13. And that's confirmed by Westok that they have the presence of the recent at one gene. Confirmed that phototaic activity which C14 sifegative photota response 613 dot. Then we looked at the chemotactic activity. So these are sons times that I mentioned earlier, roses to control no chemical gradient, but when we have a chemical gradient, we see that response. The aggregated response is CC one to four but not so much in 6.13 which again they have that recombinant add one gene. So we are determining that add one is really playing a role in collected migration. And also wants to show you this cool video. We basically, so one of our pet assets, put it under the microscope, under chemical gradient. So to the left is no matric, to the right is excess matrogen. This is what we saw, 01 of those aggregated cells. If you could see that the individual cells are almost pushing this aggregate, so this is where this paper stop. But just to allude that there's a little bit more complexity to chemotaxis, Chemotactic than we probably thought. So what kind of connections, what kind of communication is going on as these individual cells push this group of cells? So let me speak more into the complexity of the collective migration. We also wanted to make sure that the aggregates that were formed during elective migration, we send the microscope soft stress. You just did a quick experiment induce soft stress and you can see that these are a collection of much less cells. And they form a membrane just to show that is different than what we see during collective migration. So it's just not a strict response actually is collective migration and also with the independent workings of light. And one we proposed this model again speaking to more of the complexity of it. As light is present, it induces more of collective cell migration, which induces a better positive chemotactic response. And with the lack of that one gene, it leans more towards single cell migration and still can produce a positive chemotactic response, but not so collective. So just to say that this chemotactic mechanism probably has more aspects than maybe even the photo tactic mechanism. And there is a lot of literature that needs to be published on this. So I just recently published my paper. I'm very excited about that. Just to conclude that the migration patterns of Ptas and chemotaxis are different. And I might say that chemotaxis might be a little more interesting than taxis, and that ammonium chemotaxis at least is more efficient with collective migration. And that collective migration can be enhanced by, and weakened by add one. And that the mechanism of chemotaxis is probably more complex than we think, because there's specialization with aggregated cells and aggregated cells. And I just want to acknowledge the team who helped me publish my paper, my PI, Dr. to my Alexis string to help me. And she gave a talk earlier, Dr. Walker and I sue special transgenic strains and then Dr. Melvin and a Dr. Elihu who helped us with a lot of the model. And I would take any questions. So have you talked about this relationship between light, carbon and nitrogen tactic movement? Is there a reason why carbon designation light and nitrogen's differently link between the two that you can in the ecological? So actually I mean I believe so but actually that's something that perplexes perplexes because like if you think about down migration when they're more active at different times, whether they're in light or dark, our experience really matches that. So I think this speaks more into the complexity too, or maybe the way that we're doing our experience. A definite link. But the explanation for that link that was very, very beautiful, I was really intrigued with some C14 movies were making a control condition, You have no Miu gradient, you still want them collection. And I don't know what you think is happening there. Yeah, right. There was no chemotactic. And two, I don't know if this is like a question or the looks a lot like the collectibles. Dsc want literature, that may be an interesting place to look at the dictature what we see in CC one. Even when we place the moncler, they will still aggregate. I think that's due to the lack of the egg, but just based on the way I experienced in photography at the top and I think that photo technic response is very strong, very real, and what we do, so all we try to, because no matter what, we're going to get a photopic response. So all we're just trying to do is place them directly under the light to minimize them going left or right, because they're going to go in that direction. We can't keep the homogenous at all back here on the right cure. The light enhancement of phototaxis was dependent on photos. Dependent on that is an enhancement of chemotaxis. Yeah. Is that synthesis? It's very possible. But I will say we did an experiment where we switched our lightning day, light and dark day cycles. And we've done per, in their day cycle and then their night cycle and switched their drawing cycles. And it hasn't changed none of our results. So you would think it's involved. But what I've been seeing, based on the experiments we've done, maybe not. Thank you very much. Want chemotaxis? Yeah, I mean, that's something to look at because that experiment that we did just, we actually did it for the reviewers, but we didn't put it in the chemical rate, so that'd be a good thing to try. Hello, thanks, nice stock. I'm here. As far as I understood, in the time zero, you get both the Ccd and the moving and it both evolve in time. And it seems to me quite hard to interpret the collective movement. I wonder if it's possible to the technical readings and let it to reach a pseudo stationary state so that you have and then you respond with the cells in the middle and then you see which way it goes. And then you can discriminate between the diffusion of the cells itself and any other type of movement that can come from pure phototaxis. I'll tell you a few things we have done experience where I place the chemical gradient and then I pipet the algae directly in the center and I think it moves. It actually responds fast. Because there I think because there already and I also tell you I have the same idea that I want to let the gradient establish a little bit for a few hours, but then there, there will be no way for me to homogenously introduce the population. Right? Because then I would have to disturb the chemical gradient. That is a challenge that we have. Once you have, if you have modeled the concentration across the dish, you could give spike cells in the concentration that corresponds to the concentration of the exact position where you're spiking. Yeah. Then there wouldn't be any breeding time. Zero. And by the cells. Yes. So you showed us a novel Ceding event during cable Texas and I'm wondering because cell aggregate before in the video that they migrate was the ammonia. So I'm wondering whether it is you can try some cell adhesion molecules mutant. Or you would look at the flagella behavior when the cell the at that blow side. Very interesting. We have looked at some blop earlier. We looked at because we can induce whether they form of the surface or virus. We try that the photo perfect. We didn't from the top right. So we did this experiment with light from the bottom to make the Navy phototaxis one at the surface. I didn't see any difference. And so I'll suggest then is to try to move lights. And I didn't experience, they didn't move at all and I discovered that we have Pogo. So that's also a challenge. Finally effects to taxis there. Anybody knows of any lights that have Pogo? Please. Yeah. I also very much like the time moves for phototaxis photo keeps that foot in the dark. We try to nitrogen star says prices because of course wait. I want tried to incubate nitrogen three media to see. No, we haven't tried that. So I immediately take them and put them international media and tried to almost immediately start by experience. So no period of starvation, I will say I haven't done, but Dr. Milton did try something like that and didn't seem to have much difference. But I haven't done it in my success. Have you looked at nitrates? Have you looked at nitrate? That the possible and also I've looked at sales which would be needs to be able to move nitrate. Vi haven't looked at either, but I did look up some literature. Somebody had the same question before. The literature that exists has only been done in ammonium nitrate. Not, no. So maybe there's something at the charge there's no favored something on the charge. I haven't. Thank you. My name is, my name is and Janet favorites. These are dings. One such arm is harder which is compared in all uterus of course including normally the micro and this effector protein out a forms a complex called Sc and indicate that's a partially complete sip My the risk then decree bound or inhibit the transpression wizard, resulting in negative dilation or target expression. The cloning has three as for which the Pos has been identified as the most equals M instance, similar micro have identical for example in As also these are clearly that the micros be seen in context. The Asps and print deficient in micros does not show model great comparable micros. so in this show that they microbes the transfionosrurigyptyssimicutansusingvibsoluecjustwmicroy looking at the party of micro we can get a clue micro by identifying the ts And the Charlie that opined Chsld, we can see the high frequency of the single nucleotide period. So the opinion and the notes wans and perimeters were grown in growing frequent, Different, especially in the half of the light period. And besides a, an other gardens extinguished. Mark also show the decrease in the variable cast proteins at the 8 H of the Tics or unchanged in compared with strength that microns. The transients unlike most do microstone with a sequence cut complement micro is efficient that Sidle be depicted as Y, the sped and also binding benefit. So the dedicated also included Fst division and Fain state conditions to include that rapists in provision which is the heat method and the success then identify similar target chains and this is the heat slip is one to applies to the other. Wins over 100 engines were involved in the Gina. And how did functioning development then transport, localization regulations and phase regulation disability. Only a few mining in have been started in India, but recently as can be moved into the and chain using the system actually successfully introduced the three timing into the Oga. Different theoretically method can be applied to other mining voting. If you're interested in we can open question. Yes. Yeah, so the same article, three that overaclatesptscscs is that which is both of them control same arts, would you be able to be present within the next also the targeted by the same micro Let me the agreed And both cast then for the drop, Consolidated has over 100, 200 microbes deficit. You use data to identify micro targets overall. Can you make links between one particular target and a particular microdata? We have no link between T, Tiger and Micro. Just I was wondering whether it would be possible to the Roy to the target or before you make the library. Invention Micro is not shown at this point. We can micro and targets, we can find a combination of micro. And that is difficult. The expansion of stable level. So I'm wondering what is logically relevant in the microlevel. I'm quite stable over the geroge relevant micro. Next, find a reason why I'm going to have to chain. Thank you. Next will. Okay. Good afternoon everyone. My name is German from University of Illinois. Please here. And to have a chance to give my talk in this session today I'm going to talk about my research focusing on the application of tool for the achieve patient specific. Luckily I'm one of the members who developed Cyp in terms of a system. So at the time we just focus on the crystal because we want to stay go like that. But after that we try to use crystal. So it is not plot P using it and dividing Act integrates so we can increase the intricacy in the frequency up to 36% We publish the theta here and then we already published all power in 2017 after I'm using this Crisps tool and I realize that show very interesting pattern which is the Gen Act. There's no Les percent case, there is no divisional scales. I define and classified, there's a repair of the cassette type is scales. I analyzed all of my Cat YG, and then we found that type almost 14, 23% of the button shows even though ****. When I see this feature, one idea I have is that if by our Crispr target is this area start near the start of the ambiguous in, and if we introduce this case, which is a spin Barker, and there's a constructive stronger here, mix them together and we collect the mutant. We can by C replace the original Romer and then introduce this target in using our Strop constant Romero to move Sp target chain. Because of the physical case, it's not difficult to make conduct the non over expression of the expression more difficult because of this, a reason there's a gust, there's a fictional effect, something like that. Recently I mechanism, interest mechanism is discovered by the large closed group. And then they realize that when we introduce the NA, of the target of interest, it's not expressed. But if we introduce the interim, the CNA, you can see the increase of the mint. Actually I also tried to apply to my Tara's not easy because sequence DN as cloning and come size is very big in intro and side is getting increased whether they introduce the CDNANANI do. introduce prom just using their own system system so we can increase the expression and also we can avoid this functionally problem olin method we set up this method we kick the targeting of course our targeting was one because b is very wet and then a few times very strong with this one and then this is the p We can follow the Asp using. In this case, our target is not the promoters, is the three meteors in front of the sytem extension. We design another version of the Dodd. There is the stuff here, and the three prime, and this part from the Pm resistance. We introduced this one to remove the sytem extension. And also we tried to overspread Pj, which is the off of the ****. This is the color of the mutants, so this is the Opic expression and this indicates used by locking. And this is the further further the Ptp and remove the C from their, we can compound compound the Ocp of Pps by C. Then in this pane that compared to the data can see getty. Then the Act increased in this ph B word, Pkc. This is a summary of the mine study. Usually we use nine tools as a tool for out. But we can use this lack in to increase the expression and work modulate of the expression by system modification. And also this method could be avoid this kind of problem. Presale Cdos, also just modification tool. We can we can use the tools and protein trafficking or authorization and prohibiting et cetera, so it has a lot of potential it. I work for the right project and pointing and our our project supported by about this. Thank you. And I just very, very quickly question was the efficiency? Individuals information was the efficiency. Yeah, our packaging issue, focus percent. I was wondering if anyone have ever tried different homologs because they developed paper within, for example, being active, more active at lower temperatures. Has anyone ever tried using different logs? You also tried to put you have tried to also a small epogen, Why you overcos? Yeah. Actually there's time in my Well, I introduced having Yeah, because that protein is side speak is membrane proteins. We tried to try time to make anbs that I take the prom, I take the Hp behind the protoceworkyknyquestsks and and you know, there's a maximum of the sciences. Yes. Yeah. Usually is under two Kd because of A and the side is not survey because of our Homer paper. So, in this paper, I think in this paper we introduce the yay. Last question. I think Kt because you're like you still with you As seen. You also like compared production. Production. Yeah, the paper you would like comparing and the productions paper, which method is useful to get bent was the Nv compared to the conventional method to our compter chase. We introduced the Pv promotes nav sequence to the inotypenparevvjhowreotype introduced to then. Thank you and we want to be at all, right? Is the same words, kind colleagues have accused me of wanting to have the last word and I guess the program, right. I know that the dinners waiting and people are probably getting angry, but I won't be considering our 12 min. I think this is something that most last year could take away something. And it's a demand that overarch, shift everything from photosynthesis metabolics. It's something that everyone needs a bit. And what I'm going to talk about mutagenesis with risher, I don't have a fancy name I just told is making mutans. I have over the last three years or so, it before before made about 60 different lines in many different backgrounds. Sometimes double tax, triple tax, um, about half of them just plastic lockouts and they're in the top. And walk you through from very simple designs to very advanced and very brief form designs that I've recently been playing with. What I understand or what I call precision genomic is that in traditional pmoeneticslymse has double from break. It likes to integrate st and it does that fairly heavily And that leads to astonishing resources like lighter. Convince anyone on my stats orientation of these insert is pretty frees the place where it integrates and attributed. That makes a quick library but it's also a hindrance when you want to do editing. Instead we know that the cast nine can bargain that break. We can also construct cassettes that have homology feeder side that will just neatly integrate with the directionality that works pretty well how we construct the donor Dna for a classical, I call the knockout, that's probably a better word. The gene disruptions, machine disruptions that we select the double strand brake somewhere on the second Xor. And then we will insert a cassette like this, analyzing the system. And then in the course of this work, I've also flown a set of four different very nice resistance markers and all the same framework cassettes. And what we do is we would take the homology 50 basic pairs upstream and downstream, the same part of the grid, George Woodman's left, and we make linkers that tax as this homology here. Importantly, there's a little two s restriction sites all on those linkers. And we complement those linkers divisionally with homologous regions. The case and I do everything by homology works very well. By this way, we can plasma verify them. And then once done, we can cut this case out and insert. It doesn't take a lot of creativity to realize that if this works well, you can also make fluorescent fusions, for example, by choosing a double strand break that end up this gene. And putting one end of the homology on the side of this said and the other end starting complemented with the neon green tag, for example, epling three prime TR. And then turn saying that you put that in, that works really well how I transform these cells. It, the cell walls with talsey heat chop them and then electrodes ming with the star. Dnai use neon electroporation system, which lets you have just about ten microliter cells. It's really nice, very small volume say resources that way. That's typically first hand micro reaction results in a plate like this with about 500 colonies. This you don't need more than than 12 of these reactions for in then I think colonies, I screen them until I have Flores. Now I want to highlight maybe two very important things in this process, the donor DNA quality and also the Atos. And want to give you a system numbers because the kit that you used to do this thing, medical law, if you prepare last two different create kits which medicinally are already pretty clean and you get when you get the results and you look at narrow drop readings that give you the quality of what you expected there, you would assume either almost the same quality. There's hardly any difference in the inspectors topic readings. The thing is that the spectroscopy in this case can lie to you a lot. And when you look at the fluorometricessay, which is known to be much more precise in measuring the reported vehicles and DNA in this you notice that the ratios of what you actually have, what you thought you are quite different between kids. And indeed when you transform this and use the good with nothing you get very little colonies is well known. Soliz breaking you have to give you roughly the same amount of colonies but when you look at how many of them are targeted to the right spot, it really matters which one you use and that's I can't say you get rid of those changes. I'm going to show one of those examples where the number tag, this fact 56 ciliary tapping. And when you have pre selected a few mutants where you already know that the nimologyjoint amplify this entire insert up to the resistance, the diffuse. What you notice is not all of them have the accepted correct size. Some bands have a different size. The sequence, a whole bunch of those as well. And what you can notice, visualize it would be made like rearrangement blots. That pins will absolutely, during integration, exchange fragments of your cassette with parts that are flying around and sing patterns. They are micro homology driven fragment exchange. But everything here that is looking like it has the correct side and usually you can already tell by that even without sequencing is always. Usually in a normal experiment, between 25, 30% of those colonies with this protocol will absolutely look correct. Also put in and if P marked coheres Celia next to these wonderful little blow tips like a ray showing, waving around the low stick at the end of the very huge. Now, the screening is very important because once you start making mutants in a bit of a more hydrate fashion, you get a lot of them much as have one or two mutants lot. So you get a lot. I spend quite some time finding good mixtures for PCR that are also able to work. Acr, you don't have to purify DNA, you just use cells or heat live cells with template. This works reliably, even though 384 well plays in three microled reactions. But is it the nice? Because you can do a lot of that and it's not very expensive this way. This is all the works with PCR dice. I do almost all there screening on APCR as opposed to a traditional PCR. Because it lets you do things like directly determine the melting mating type just by melting products. Now this lets you do most of the designs you want to do in your daily work use term. You can choose thanks to your terminus. And that's already nice. But what's nasty is to have this resistant cast always used. It helps because of course, it up the efficiency quite a bit. But since we can also screen now. Well, I tried something else where I took the C terminus of this it 40 16. I chose a cut side closer to the end and I instructed a cassette that's just the linker and a fluorescent Protein Plomo arms and transforming that is not exactly terribly efficient because you have side force here. You have to hold that, you find one that's correct or what you can also do is you can choose yourself a second gene, somewhere like way from another chromosome. And you can target a classical insertional exertion cassette to that second part. And this is borrowing the traditional transformation approach for making insertional mutants like it's pretty standard for a long time. That totally works of course, because it doesn't work as well. So the primary efficiency goes down to a few percent, but since you can screen plate, it's not that much of a problem. Then you make games, you hatch them, fax machine just to efficiently signal, to make isolate them into Sable wells plate. And you can see the result of such crossing here, the original Paradise if Tv 46 and scarlet strain has shorter flagella but of course sent signal and once you press it back out, everything returns well. The cells are no longer resist Ugt. I want to end this with a more advanced design which is I chose alpha tubulin for an internal Ad. And why is alpha tubulin difficult? Is because we have two copies of alpha tubulin momon. If you want to insert anything here on the terminus is very difficult to find a unique guide. Because the guide that is anywhere close to here will both of those genes. And that's really not what you want. What I did instead is you can see it around here. There's regions where you can find guides that are obviously unique because tugs don't align. And I chose two Soci use in total, the three Orp and the cassette that looks something like this, that you have the homologous region. With the remainder of this plus UTR, you put in the nonres, some introns and you complement the whole thing at the end of the first, the hydro first and the remaining parts and of course this can then replaced that little part that you come out perfectly. And of course the same way, again, Rs four in the as the selection marker. I have to say it didn't work as well as I hope, but it didn't work. You do get fluorescent two through and I'm not sure if it was the entrance that are not very nice. But just attack that, you do have attack there even within the current edits. You have things that you need to consider past just it. And with that I want to thank my three laps as well. The very nice support that we have a the Moscow Society with many facilities that help us red a lot of the day to day routine of our hands, we can focus on more interesting things that I would I guess, like to finish or close the conference. And here so you look at a similar pens, the cytosolic incubus. Yeah. Ar Carl has a really nice Sfpp or integrated tubulin strain. I kind of started even remaking a few strains that we already have. Technically with the old insert method, surely because crossing notions tags gets way, way easier, especially once you start stacking them on top of each other. Because of course, normally you would have one in four chance and then suddenly you get a one in two chance cross. Correct? I see that previously because tubulins very complete. This one still have Tslp two undisrupted, but it has the alpha tubulin one tag. I have not knocked out alpha tubulin two yet. I don't know what happens. It may die. The you said the G Rs are each basis super, super, super short at that short. And is there any reason to speed that the road work better? Well, I'll be honest with you, on average unit. So George Whitman did some work there. He already found that 50 is usually, I think he went up to 100, and they didn't see so much of a difference. And 50 is just a nice size. It's easy to get a fragments that are small and honestly the efficiencies of integration are so good. Why would you need a different? Thank you for the great talk here in West side. You mentioned I need two keys, Da and transformation efficiency. Are you saying different keys? You may have a different contamination. The affect adding because the ends of the DA get truncated. That affect equilat enzymes and then purify must be something in there because you see the fluoro genic acid just gives you more DNA read out in one case and not in the other. There must be something in those samples. It's, I'm pretty sure it's up to the DNA. It's not a problem when you do insertional work. Traditional for the mojo doesn't seem to be effective, but the homology directed definitely seems to be effective. Thank you again, in the Tua, it appears that you put set into the UTR, isn't there an Asp which will prevent expansion and the tubulin is N terminal, not AC terminal. And yes, it's an terminal tag because I didn't want to put anything on the C terminal tubulin that would give, it inhibits into a certain things like disorder and multiplies. It's kind of another place where you want to put a tag. So I put it in the inter, I missed, I put it in.