Reposted by Jerrin Thomas GeorgeAlexander Harms @aharms485.bsky.social · 25/09/2026The final version of our manuscript on TnSeq in bacteriophages (“HIDEN-SEQ”) is out today – if you have an interesting phage phenotype and want to know the underlying genetic basis, this one is for you! 1/4 515372
Reposted by Jerrin Thomas GeorgeSternberg Lab @sternberglab.bsky.social · 03/08/2026Out now! In collaboration with Hiroshi Nishimasu's lab, we uncover how a dual reverse transcriptase immune system builds double-stranded DNA from both RNA and protein templates. www.cell.com/cell/abstrac... Previous thread for the preprint: bsky.app/profile/ster...cell.comCoordinated RNA- and protein-templated synthesis of double-stranded DNA by a dual reverse transcriptase immune systemBacterial reverse transcriptases defend against viruses, yet how their DNA products stop infection remains unknown. Bacteriophage inhibition of a host recombination enzyme activates the DRT3 defense s... 03817
Reposted by Jerrin Thomas GeorgeNogales Lab @nogaleslab.bsky.social · 20/07/2026Thrilled to share our collab led by Grace Hibshman with the Shipman lab! Type IX retron-Kva2 structure reveals phage detection via an HTH fold, not a primary sequence. We computationally designed triggers that program bacteria cell death, pointing toward designer antimicrobials. 15921
Reposted by Jerrin Thomas GeorgeSternberg Lab @sternberglab.bsky.social · 09/07/20261/11 New preprint from the Sternberg lab in collaboration with the Fernández lab! We are excited to share our structure-function study of DRT10, a bacterial defense-associated reverse transcriptase that synthesizes long tandem-repeat DNA.🧵 Read the full story here: www.biorxiv.org/content/10.6...biorxiv.orgMechanism of tandem-repeat DNA synthesis by an antiviral reverse transcriptaseDefense-associated reverse transcriptases (DRTs) employ DNA synthesis to protect bacteria against phage infection[1][1],[2][2]. We previously showed that DRT10, a tripartite system comprising an RT, a... 16123
Reposted by Jerrin Thomas GeorgeJakob T Rostøl @jakob-tr.bsky.social · 20/05/2026Like a prophage being awakened from its slumber, the phage field has seen a lot of renewed activity during the last decade. Check out our new @natrevmicro.nature.com review on the temperate phage life cycle here to stay up-to-date 🧫🦠 www.nature.com/articles/s41...nature.comRevisiting the life cycle of temperate phages - Nature Reviews MicrobiologyThe life cycle of temperate bacteriophages involves lytic or lysogenic cycles and has historically served as a model for studying genetic regulation. This Review provides an updated overview of these ... 07234
Reposted by Jerrin Thomas GeorgeNature Biotechnology @natbiotech.nature.com · 12/05/2026How can we translate our growing understanding of the dark genome into therapeutics? We asked experts in the field for their thoughts go.nature.com/4tQ1zTn rdcu.be/e8Ecigo.nature.comTransposable elements in the dark genome - Nature BiotechnologyTransposable elements (TEs), such as retrotransposons and endogenous retroviruses, are increasingly recognized for their important roles in genome function and impact on disease development. Residing ... 0135
Reposted by Jerrin Thomas GeorgeAude Bernheim @audeber.bsky.social · 02/04/2026How diverse is bacterial immunity ? We report in @science.org how language models allowed us to predict 2.4M antiphage proteins spanning >23K novel potential systems. 👏 @emordret.bsky.social, @alexhv.bsky.social & al doi.org/10.1126/scie... Explore them here defensefinder.mdmlab.fr/wiki/refseq_...science.org 10229115
Reposted by Jerrin Thomas GeorgeHarmit Singh Malik @harmitmalik.bsky.social · 11/03/2026Bacterial Schlafen proteins mediate phage defence (new work from @anemudraia.bsky.social and @artemnemudryi.bsky.social labs) www.nature.com/articles/s41... Schlafens are an ancient, mechanistically conserved family of tRNA-targeting immune effectors.nature.comBacterial Schlafen proteins mediate phage defence - Nature MicrobiologyThis study highlights that Schlafens are ancient, mechanistically conserved immune effectors that mediate antiviral immunity in organisms ranging from humans to bacteria. 13211
Reposted by Jerrin Thomas GeorgeKelly Nguyen @kellythd-nguyen.bsky.social · 23/01/2026Excited to share our latest work on dissecting the mechanism of processive telomeric DNA synthesis by telomerase. Led by amazing PhD student Sebastian Balch in collaboration with lab members,@automnenine.bsky.social @rachael-kretsch.bsky.social,@rdaslab.bsky.social. www.nature.com/articles/s41...nature.comStructures of nucleotide-bound human telomerase at several steps of its telomeric DNA repeat addition cycle - Nature CommunicationsTo maintain genome stability, the specialised reverse transcriptase telomerase processively adds telomeric DNA repeats to chromosome ends. Here the authors reported structures of human telomerase at t... 25215
Reposted by Jerrin Thomas GeorgeAaron Whiteley @aaronwhiteley.bsky.social · 18/01/2026I’m thrilled to share our work on phage triggers of the bacterial immune system in its final form @natmicrobiol.nature.com www.nature.com/articles/s41...nature.comA phage protein screen identifies triggers of the bacterial innate immune system - Nature MicrobiologyA library of 400 phage protein-coding genes is used to find a trove of antiphage systems, revealing systems that target tail fibre and major capsid proteins. 210450
Reposted by Jerrin Thomas GeorgeNature Communications @natcomms.nature.com · 06/10/2025Structural basis of antiphage defence by an ATPase-associated reverse transcriptase @jerrintgeorge.bsky.socialbit.lyStructural basis of antiphage defence by an ATPase-associated reverse transcriptase - Nature CommunicationsIn this study, the authors determine the structure of a Type I-A retron from E. coli FORC82 and reveal the functional interplay between Reverse Transcriptases (RTs) and Structural Maintenance of Chromosomes (SMC) ATPases.’ 051
Jerrin Thomas George @jerrintgeorge.bsky.social · 29/09/2025I am happy to share our work on the mechanism of prokaryotic immunity by a reverse transcriptase associated with an SMC-family ATPase, now published in @natcomms.nature.com 🔗 nature.com/articles/s4146… (🧵 on the bioRxiv version ⬇️)nature.com 172
Reposted by Jerrin Thomas GeorgePeter Fineran @peterfineran.bsky.social · 18/08/2025Ever wondered why some bacteria have multiple CRISPR-Cas systems? Our new study led by Leah Smith shows how type I CRISPR systems can promote the acquisition and retention of new spacers into a co-occuring type III system. www.sciencedirect.com/science/arti...sciencedirect.comType I CRISPR-Cas immunity primes type III spacer acquisitionCRISPR-Cas systems are diverse, with microbes harboring multiple classes and subtypes. Type I DNA-targeting and type III RNA-targeting systems often c… 56225
Reposted by Jerrin Thomas GeorgeRuben Gonzalez @rubenlgonzalez.bsky.social · 31/07/2025New from our lab in @narjournal.bsky.social: We dissect the folding dynamics of a fundamental element of RNA secondary structure—a stem-loop—at single-molecule and microsecond resolution. doi.org/10.1093/nar/... 1/5 12211
Reposted by Jerrin Thomas GeorgeHannah Ledvina Ph.D. @hannahledvina.bsky.social · 02/07/2025Words cannot describe how excited I am to share the findings from the second half of my postdoc in @aaronwhiteley.bsky.social's lab where we discover that bacteria use functional amyloids to defend themselves from predatory bacteria. rdcu.be/euu5Y. See thread for details on this epic adventure 1/.rdcu.beFunctional amyloid proteins confer defence against predatory bacteriaNature - Escherichia coli uses curli fibres, oligomers of the functional amyloid CsgA, as a barrier to protect against the predatory bacteria Bdellovibrio bacteriovorus and Myxococcus xanthus in a... 616653
Reposted by Jerrin Thomas GeorgeTugce Aktas @aktast.bsky.social · 30/06/2025We wrote a review on Transposable Elements (TEs) and almost all aspects of TE silencing and their roles in biological processes & disease. www.nature.com/articles/s41...nature.comTranscriptional and post-transcriptional regulation of transposable elements and their roles in development and disease - Nature Reviews Molecular Cell BiologyTransposable elements (TEs) comprise nearly half of the human genome. This Review discusses transcriptional and post-transcriptional mechanisms that repress TE activity, how TEs escape this suppressio... 214269
Reposted by Jerrin Thomas GeorgeSeth Shipman @seth-shipman.bsky.social · 18/06/2025New Preprint!! Alejandro González-Delgado accomplished a major feat on this one: ported retron recombineering, which we love so much in E. coli, into 14 new bacterial species via a massive collaborative effort involving 9 labs! www.biorxiv.org/content/10.1... 34819
Reposted by Jerrin Thomas GeorgeJoe Peters Lab @joepeterslab.bsky.social · 15/06/2025Exciting work from the Guarné lab indicating how the elusive TnsE pathway of prototypic Tn7 recognizes DNA replication features using an asymmetric dimer to integrate multiple signals at DNA replication forks linking target recognition to transposase recruitment doi.org/10.1093/nar/... 0125
Reposted by Jerrin Thomas GeorgeSternberg Lab @sternberglab.bsky.social · 11/06/20251/10 New pre-print(s) from the Sternberg Lab in collaboration with Leifu Chang's Lab! We uncover the unprecedented molecular mechanism of CRISPR-Cas12f-like proteins, which drive RNA-guided transcription independently of canonical promoter motifs. Full story here: www.biorxiv.org/content/10.1... 39240
Reposted by Jerrin Thomas GeorgeSternberg Lab @sternberglab.bsky.social · 28/05/2025We're thrilled to share the published version of our DRT9 story, online today @nature.com! Congratulations to all authors! www.nature.com/articles/s41... 05518
Reposted by Jerrin Thomas GeorgeDi Jiang @dijiang319.bsky.social · 16/05/2025@science.org 🧫🧬❄️🔬 Molecular basis of influenza ribonucleoprotein complex assembly and processive RNA synthesis | Science www.science.org/doi/10.1126/... @yiweichang.bsky.social www.yiweichanglab.org @jiwasa.bsky.social #virology #Influenza #Cryo-EM #StructuralBiology #RNA #polymerase 39021
Reposted by Jerrin Thomas GeorgeSorek Lab @soreklab.bsky.social · 30/04/2025A beautiful discovery by Joel Tan and Philip Kranzusch, out today in Nature: A DNA-gated molecular guard controls bacterial Hailong anti-phage defence Congrats Joel and Philip! Was a pleasure to contribute to this discovery together with Sarah Melamed www.nature.com/articles/s41... 15320
Reposted by Jerrin Thomas GeorgeLiz Ortiz de Ora @ortizdeora.bsky.social · 18/04/2025I am thrilled to share the first manuscript from the Wiles lab! We present "Phollow", an in vivo phage-tagging approach that enables direct observation of phage outbreaks with single-virion resolution by live imaging. Here some highlights 👇 www.nature.com/articles/s41...nature.comPhollow reveals in situ phage transmission dynamics in the zebrafish gut microbiome at single-virion resolutionNature Microbiology - ‘Phollow’ is a live imaging-based fluorescence tagging approach that can track phage replication and spread in situ with single-virion resolution. 510639
Reposted by Jerrin Thomas GeorgeAaron Whiteley @aaronwhiteley.bsky.social · 08/04/2025Check out our new story led by @aesully98.bsky.social describing how bacteria turn immune evasion against phage! In collaboration with @benmorehouse.bsky.social lab, we discover that bacteria guard their nucleotide second messenger pool using a nucleotidyltransferase related to Cas10/CRISPR enzymes 12811
Reposted by Jerrin Thomas GeorgeJoe Bondy-Denomy @jbdsf.bsky.social · 03/04/2025Interested in phage defenses that natively block lytic phage used in therapies? Or do you want to figure out if a phage has a modified genome? Meet the END-nucleases, an enzyme family that can broadly restrict phages with many diverse modifications. From talented post-doc Wearn-Xin Yee! 13918
Jerrin Thomas George @jerrintgeorge.bsky.social · 27/03/2025I am super excited to share our work uncovering the structure and mechanism of an ATPase-associated reverse transcriptase (RT) involved in prokaryotic antiviral defense, now available as a preprint on bioRxiv!🧬🦠🔬 www.biorxiv.org/content/10.1... 🧵👇biorxiv.orgStructural basis of antiphage defense by an ATPase-associated reverse transcriptaseReverse transcriptases (RTs) have well-established roles in the replication and spread of retroviruses and retrotransposons. However, recent evidence suggests that RTs have been conscripted by cells f... 2218
Reposted by Jerrin Thomas GeorgeMaya Voichek @mayavoichek.bsky.social · 17/03/20251/ Transposable elements are often called "jumping genes" because they mobilize within genomes. 🧬 But did you know they can also jump 𝘣𝘦𝘵𝘸𝘦𝘦𝘯 cells? 🤯 Our new study reveals how retrotransposons invade the germline directly from somatic cells. www.biorxiv.org/content/10.1... A short thread 🧵👇 12547259