Tera Levin
@teralevin.bsky.social
4.3K followers 640 following 190 posts
Assistant professor of Biological Sciences at Pitt, studying evolution, genes, and microbes. Same as @tera_levin in the other place. #NewPI She/her
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teralevin.bsky.social
I'm excited to announce our new biorxiv preprint, wherein we investigate the evolution of the weirdest genetic locus I've ever seen! Behold the tgr genes of the social amoeba, which mediate self/non-self discrimination during facultative multicellularity 🐅 🧵 1/
www.biorxiv.org/content/10.1...
Hypermutable hotspot enables the rapid evolution of self/non-self recognition genes in Dictyostelium
Cells require highly polymorphic receptors to perform accurate self/non-self recognition. In the amoeba Dicytostelium discoideum, polymorphic TgrB1 & TgrC1 proteins are used to bind sister cells and e...
www.biorxiv.org
teralevin.bsky.social
This is great! Congrats to the whole team
Reposted by Tera Levin
thibautbrunet.bsky.social
Latest from ours: www.cell.com/cell-reports...

This is two stories in one: a case study/cautionary tale on developing genetic tools in new organisms, and the first hint at a gene regulatory network for choanoflagellate multicellular development (which turn out to involve a Hippo/YAP/ECM loop!) A 🧵
Reposted by Tera Levin
matthewherron.bsky.social
The #NSF Division of Integrative Organismal Systems (IOS) will host a Virtual Office Hour for the #GRFP (Graduate Research Fellowship Program) on Thursday, October 16 at 1 pm ET:

nsf.zoomgov.com/webinar/regi...

The deadline for Life Sciences is November 10.
Webinar Registration - Zoom
nsf.zoomgov.com
Reposted by Tera Levin
peiferlabunc.bsky.social
Here's my comment--join me. This would effectively remove foreign PhD students and postdocs from our labs. please share
teralevin.bsky.social
Heading back from a great visit to Madison! Thank you so much for hosting me, it was wonderful to meet with everyone
markjmandel.bsky.social
Join us on Friday at noon for a great seminar from Tera Levin @teralevin.bsky.social! @uwmadisonmmi.bsky.social
Announcement: Medical Microbiology & Immunology Seminar Series, September 26, 12:00 pm, MSB 1520. "The Evolution of Immunity and Pathogenesis within Environmental Microbial Battlegrounds". Dr. Tera Levin, University of Pittsburgh.
Reposted by Tera Levin
Reposted by Tera Levin
vscooper.micropopbio.org
🚨 Microbiologists! We are recruiting Assistant / Associate Professors in 3 collaborative areas of our U. Pittsburgh School of Medicine.
1) MMG (my dept): fundamental research in med micro
2) Peds ID / I4Kids institute
3) Center for Vaccine Research
🔗 to all 3 w/info: www.linkedin.com/posts/vaughn...
Faculty Professor Associate - Full-Time | Vaughn Cooper
We are recruiting Faculty microbiologists in three (3) different, complementary, and collaborative areas at the University of Pittsburgh associated with the School of Medicine. 1) Fundamental researc...
www.linkedin.com
Reposted by Tera Levin
vscooper.micropopbio.org
🚨🎉 The Center for Evolutionary Biology and Medicine (CEBaM) at Pitt is delighted to announce the winners of this year's Catalyst Award program.

This year, Catalysts were designated for science communication projects that engage wider audiences in the field of evolutionary biology and medicine. 🧵🥁
teralevin.bsky.social
Congrats to both of you!!
Reposted by Tera Levin
soreklab.bsky.social
Preprint: De-novo design of proteins that inhibit bacterial defenses

Our approach allows silencing defense systems of choice. We show how this approach enables programming of “untransformable” bacteria, and how it can enhance phage therapy applications

Congrats Jeremy Garb!
tinyurl.com/Syttt
🧵
Synthetically designed anti-defense proteins overcome barriers to bacterial transformation and phage infection
Bacterial defense systems present considerable barriers to both phage infection and plasmid transformation. These systems target mobile genetic elements, limiting the efficacy of bacteriophage-based t...
www.biorxiv.org
Reposted by Tera Levin
andrewjroger.bsky.social
I gave a symposium talk at the European Society for Evolutionary Biology 2025 (#eseb2025) meeting last week and this was my title slide showcasing how I was speaking as an independent scientist because @dalhousieu.bsky.social @dalhousie.bsky.social has locked us out.
Reposted by Tera Levin
carlbergstrom.com
1. "'Trusting the experts is not a feature of either a science or democracy," Kennedy said."

It's literally a vital feature of both science and of representative democracy.

I've written a fair bit about trust in expertise as a vital mechanism in the collective epistemology of science.
RFK Jr. in interview with Scripps News: ‘Trusting the experts is not science’
HHS Secretary RFK Jr. sat down with Scripps News for a wide-ranging interview, discussing mRNA vaccine funding policy changes and a recent shooting at the Centers for Disease Control and Prevention.
www.scrippsnews.com
Reposted by Tera Levin
carlbergstrom.com
5. It has been centuries since any one human could know everything that is known; understand everything that is understood.

This is a remarkable power of science. We delegate trust and authority to experts as internally established in ways that are remarkably resilient to mistakes and malfeasance.
teralevin.bsky.social
These are so great Thibaut!
Reposted by Tera Levin
lianafaye.bsky.social
At the same time, we made thousands of synonymous mutations in endogenous yeast genes and measured their growth. We used careful statistics and controls. Only 3%, 204 of 6874, had a fitness effect! This goes against a controversial recent result that most synonymous mutations had fitness effects.
Scatterplot showing fitness effect of ~7000 synonymous mutations in yeast: read count at start vs log2 fold change. Most data points are not significant but 204 points are significant outliers, either advantageous or deleterious.
teralevin.bsky.social
Thanks Sunny! Hope you’re doing well
Reposted by Tera Levin
teralevin.bsky.social
I'm excited to announce our new biorxiv preprint, wherein we investigate the evolution of the weirdest genetic locus I've ever seen! Behold the tgr genes of the social amoeba, which mediate self/non-self discrimination during facultative multicellularity 🐅 🧵 1/
www.biorxiv.org/content/10.1...
Hypermutable hotspot enables the rapid evolution of self/non-self recognition genes in Dictyostelium
Cells require highly polymorphic receptors to perform accurate self/non-self recognition. In the amoeba Dicytostelium discoideum, polymorphic TgrB1 & TgrC1 proteins are used to bind sister cells and e...
www.biorxiv.org
teralevin.bsky.social
Also prior work found that development is fine in merodiploids that express some matching and some mismatching tgrB1/C1 alleles. So as long as one pair works, it seems that the cost of experimenting w other versions and creating new tgrBCs is relatively low, which would enable turnover
teralevin.bsky.social
Ah, lots of debate on this point, see Croziers paradox. My qualitative thoughts: w each replication there’s a possibility of generating cheater mutants. To avoid this it’s best to cooperate w very close relatives. But this requires lots of new alleles to differentiate sister cells and 100th cousins