Tamanash Bhattacharya

Tamanash Bhattacharya

@tamanash.bsky.social

Helen Hay Whitney Foundation fellow in Harmit Malik lab at Fred Hutch | I study evolutionary adaptation | http://tamanashbhattacharya.wordpress.com

212 Followers 319 Following 28 Posts Joined Oct 2023
1 day ago
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Polymerase trapping as the mechanism of H5 highly pathogenic avian influenza virus genesis Highly pathogenic avian influenza viruses (HPAIVs) derive from H5 and H7 low pathogenic avian influenza viruses (LPAIVs). Although insertion of a furin-cleavable multibasic cleavage site (MBCS) in the...

Transient RNA structures play a key role in the emergence of highly pathogenic avian influenza viruses! Great to see this collaboration with Mathis Funk, Mathilde Richard, Stephen Cusack, and others in @science.org www.science.org/doi/10.1126/...

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1 week ago

Rebecca is starting her lab as a UCSF Sandler fellow in August 2026; folks at #Dros26 interested in host-parasitoid interactions should try to catch her at the meeting to find out about available positions: www.tarnopollab.org/people

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Magnesium depletion by Candida albicans unleashes two unusual modes of colistin resistance in Pseudomonas aeruginosa with different fitness costs Bacterial resistance to the vital last-resort antibiotic colistin is an increasing challenge. This study shows that magnesium sequestration by C. albicans enables P. aeruginosa to evolve much higher…

In new research, Yu-Ying Phoebe Hsieh, Ian O’Keefe, Ajai Dandekar, Harmit Malik &co reveal how magnesium sequestration by C. albicans enables P. aeruginosa to evolve much higher levels of resistance to colistin (a last-resort #antibiotic).
🧪#MicroSky

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With Eugene Koonin, we propose a concept of “the selfish ribosome”, under which evolution of life is viewed as a ribosomal takeover, where the ribosome evolved to consume most of the cell’s resources, while other cellular componentry ensures the propagation of the ribosome. arxiv.org/abs/2602.23268

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2 weeks ago
An intrinsically disordered region mediates RNA-binding selectivity and cellular activities of LARP6 - Nature Communications LARP6 is an EMT-associated RNA-binding protein with diverse RNA targets. Here, the authors show that the N-terminal disordered region of LARP6 promotes RNA-binding selectivity by modulating the adjace...

🎉Proud to present our latest paper, out now in Nature Communications: www.nature.com/articles/s41...

RNA Binding Proteins (RBPs) are often full of intrinsically disordered regions (IDRs), but what these regions do during RNA recognition is often unclear. 1/10
#RNA #IDR #RBP

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3 weeks ago

Integrase anchors viral RNA to the HIV-1 capsid interior pubmed.ncbi.nlm.nih.gov/41708858/ #cryoEM

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1 month ago
NOT-OD-26-020: Notice of Temporary Extension to Early-Stage Investigator (ESI) Eligibility Period NIH Funding Opportunities and Notices in the NIH Guide for Grants and Contracts: Notice of Temporary Extension to Early-Stage Investigator (ESI) Eligibility Period NOT-OD-26-020. OD

🧵Good news out of #NIH today.
(1) NIH is extending #ESI and #K99/R00 eligibility to accommodate researchers whose eligibility would have ended during the previous shutdown. Take a look at NOT-OD-26-020. If your ESI status would have ended in 2025, you get an automatic extension through 2026/03/31.

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1 month ago
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A small polymerase ribozyme that can synthesize itself and its complementary strand The emergence of a chemical system capable of self-replication and evolution is a critical event in the origin of life. RNA polymerase ribozymes can replicate RNA, but their large size and structural ...

How could a simple self-replicating system emerge at the origins of life? RNA polymerase ribozymes can replicate RNA, but existing ones are so large that their self-replication seems impossible. Could they be smaller?

Excited to share our latest work in @science.org on a new small polymerase.
1/n

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1 month ago

New preprint from our lab led by fantastic graduate student @titas10.bsky.social, in which we retrace the emergence of antimicrobial function in the mammalian protein lactoferrin.

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The visualization of two bacterial genomes, of 50 and 52kb, representing independent instances of extreme genomic reduction in ancient heritable endosymbionts of planthoppers.

Our new paper in @natcomms.nature.com is now online-early!

We describe independent evolution of bacterial genomes of only ~50–52 kb — the smallest known outside cellular organelles — revealing striking convergence toward minimal gene sets.

🔗 doi.org/10.1038/s414...

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1 month ago
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darth vader in a dark room with the words if you only knew the power of the dark side ALT: darth vader in a dark room with the words if you only knew the power of the dark side
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Excited to share our work on #AncientRNA from alcohol-preserved lungs, recovering the oldest human RNA virus genome (an 18th-century rhinovirus). Our study shows that viral RNA remnants persist in centuries-old tissue, opening new ways to study virus evolution and historical disease #Paleovirology🫁🦠

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1 month ago
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Cryo-electron tomography reveals coupled flavivirus replication, budding and maturation - Nature Communications In this study, Dahmane et al use a method called cryo-electron tomography to uncover new details of how tick-borne flaviviruses transform cells into virus factories.

I am super happy to share this paper in its final form. We used FIB milling to "dig in to" cell lines and mouse brains infected with tick-borne flaviviruses, followed by cryo-ET to study the virus replication. It's open access, so have a look!
#virology #teamtomo
www.nature.com/articles/s41...

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1 month ago
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a man in a suit and tie with a microphone that says it 's pretty simple ALT: a man in a suit and tie with a microphone that says it 's pretty simple

Go Hoosiers!

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Sequences of 5′ untranslated regions in viral RNAs drive codon-usage-independent translation by blocking mRNA circularization, enabling viruses to evade the host’s codon-usage control of translation @nature.com
www.nature.com/articles/d41... on
www.nature.com/articles/s41...

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2 months ago
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Global Landscape of Human Kinase Motifs in Viral Proteomes Viruses are classically viewed as targets of host sensing, yet whether they also sense and respond to host cues remains largely unexplored. We propose that host-driven post-translational modification ...

Thrilled to share the first major preprint from the lab. Viruses are classically viewed as targets of host sensing. Do viruses also sense and respond to the host? We propose viruses may act as “biosensors” of the host signaling state. A thread👇🏾 www.biorxiv.org/content/10.1...

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3 months ago
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Intracellular interactions shape antiviral resistance outcomes in poliovirus via eco-evolutionary feedback - Nature Ecology & Evolution A model of intrahost poliovirus replication shows that, after several rounds of replication, pocapavir, a poliovirus capsid inhibitor, collapses viral density, preventing intracellular interactions th...

My first lead author paper is out with Ben Kerr and @alisonfeder.bsky.social! We found that making an antiviral too strong can sometimes make resistance easier to evolve. This has implications for how we design drugs, choose doses, and think about viral evolution in the face of treatment. (1/n)

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3 months ago
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Flaviviridae RdRp exploits NSUN2-driven m5C methylation to establish persistent infection Author summary Flaviviridae viruses—including JEV, CSFV, and HCV—deploy intricate molecular strategies to subvert host innate immune surveillance and establish chronic infections, representing signifi...

Flaviviridae RdRp exploits NSUN2-driven m5C methylation to establish persistent infection

journals.plos.org/plospathogen...

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3 months ago

Now published as version of record at @elife.bsky.social !

Layers of Immunity: Deconstructing the Drosophila effector response. The tools are now deposited in the VDRC (link ⬇️)

elifesciences.org/articles/107...
shop.vbc.ac.at/vdrc_store/d...

#Drosophila #IDsky #SymbioSky #Infection #Immunology

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3 months ago
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Rapid compensatory evolution within a multiprotein complex preserves telomere integrity Intragenomic conflict with selfish genetic elements spurs adaptive changes in subunits of essential multiprotein complexes. Whether and how these adaptive changes disrupt interactions within such comp...

How to keep in step when your (protein) partner speeds up…

Here we investigated the adaptive remodeling of a protein-protein interaction surface essential for telomere protection.

Congrats to whole team!

www.science.org/doi/10.1126/...

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3 months ago
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Meng-Chao Yao Obituary | 1949 - 2025 | Seattle Times View Meng-Chao Yao's complete obituary, share memories, and explore 1 tribute posts from the community.

Deeply saddened by the passing of my colleague, Prof. Meng-Chao Yao, a remarkable scientist and mentor. He left an indelible mark on all of us fortunate enough to know him. His legacy in molecular and ciliate biology will endure. Rest well, my friend. 1/

obituaries.seattletimes.com/obituary/men...

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3 months ago

I’m excited to share my recent postdoc work. Here, we interrogate how different phage infection outcomes (productive vs. restrictive) affect the expression of phage defense systems. We find that a restricted infection not only inhibits the phage but also induces increased immune protein abundance.

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3 months ago
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Single-cell susceptibility to viral infection is driven by variable cell states Not all cells that can be infected by a virus become infected with that virus. Single-cell clone tracing reveals intrinsic cell states with variable expression patterns that increase susceptibility to...

So awesome to have this great paper from Sam Reffsin and Sara Cherry out! In it, we use retrospective clone tracing to show that there are particular single cell states that are more susceptible to viral infection (both SARS-CoV-2 and flu)!

www.cell.com/cell/fulltex...

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4 months ago

Are you an early-stage graduate student (2nd or 3rd year) or early-stage postdoc based in the US or Canada, working primarily in Drosophila? Would you like to help improve the experience of all trainees working in Drosophila research? If so, read on.

(Please repost to reach a broad audience.)

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4 months ago
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Community survey on the addition of Dengue, Chikungunya, Oropouche, Zika and Yellow fever virus to Pathoplexus Pathoplexus is a new platform for sharing pathogen sequence data, launched in August 2024 [1], with the primary aim of making sharing and accessing pathogen genomic data easier, faster, and more effic...

@andersonfbrito.bsky.social and I are seeking input from the community on hosting/sharing arbovirus sequencing data (DENV, CHIKV, OROV, ZIKV, & YFV) on @pathoplexus.org.

Please consider filling out this VERY SHORT survey about your interest and/or concerns.

docs.google.com/forms/d/e/1F...

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4 months ago

More pictures of the brilliance that is (lab manager) Aida de la Cruz with her creation.

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5 months ago

Muyuan Chen has turned structural biology into an immersive experience with his new video game Meowtabolism, now available on Steam.
Try the demo here: store.steampowered.com/app/4045010/...
Give Muyuan feedback: steamcommunity.com/app/4045010
#ScienceGaming #StructuralBiology #CryoEM #STEMOutreach

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5 months ago
Join — Genoyer Lab

Excitingly, we are now hiring at all levels!! Please reach out if you are interested in RNA viruses, viral replication, innate immunity, RNA imaging, or are just excited about having fun doing cool science! Information about specific positions here www.genoyerlab.com/join

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