Khalimat Murtazalieva

@khalimat.bsky.social

MD, PhD

We find that nuclear Pol II drops several-fold in abundance with age. This is a somatic phenomenon–the germline seems to maintain Pol II just fine. Somatic declines in Pol II begin at the start of adulthood, a time when individuals still look young and vigorous. 11/22

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Did you know that the cells of old animals contain much less mRNA than the cells of young ones? Let me share with you some results from an ongoing project in the lab, where we are finding that a progressive depletion of total mRNA abundance is a crucial part of aging 1/22

Thrilled to share! We present the structure of a prototypical P2 OLD and reveal that its tRNAse activity is triggered by ssDNA hairpins in phage origins or unresolved termini in RecBCD-deficient cells. Great team effort with Wang, Bikard & Nudler labs. www.biorxiv.org/content/10.6...

OLD sentinel: an abortive tRNase surveys phage replication and DNA defects in RecBCD-compromised cells

OLD, an abortive immunity protein from prophage P2, consists of an ABC ATPase sensor and a TO-PRIM nuclease effector - a core architecture shared by a large protein family, including components of ant...

biorxiv.org

The protein design team at Deepmind is hiring! We are looking for someone to run design campaigns and contribute to model improvement. Should have expertise in design applications and using wetlab data feedback to improve methods. Please RT! DM with Qs. www.google.com/about/career...

Research Scientist, Protein Design, DeepMind

As an organization, Google maintains a portfolio of research projects driven by fundamental research, new product innovation, product contribution and infrastructure goals, while providing individuals...

google.com

Happy to share a preview of recent work from E. Koonin & colleagues, revealing the widespread presence of reparative helicases as central components of prokaryotic immune systems. Written by our talented PhD student Oksana. www.cell.com/cell-host-mi...

A repair helicase unravels the tangled web of bacterial immunity

DNA repair proteins are repeatedly repurposed for antiviral immunity. In this issue of Cell Host & Microbe, Bell et al. utilized phylogenetic reconstruction of the evolutionary routes of the YprA repa...

cell.com

Imagine programming protein, DNA, and RNA systems like you would write computer code, or even by natural language prompting of an AI agent. @brianhie.bsky.social and team just made this a reality with Proto: a high-level programming language for generative biology.

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The CRISPR-Cas system in E. coli K-12 is considered inactive. We questioned whether mobile elements encode anti-CRISPRs against this system and found a highly abundant AcrIE9-AcrIE10 tandem and a novel AcrIE13 — an HTH protein more similar to Aca than known Acrs. www.pnas.org/doi/10.1073/...

A census of anti-CRISPR proteins reveals AcrIE9 and AcrIE13 as inhibitors of the Escherichia coli K12 type IE CRISPR-Cas system | PNAS

CRISPR-Cas adaptive immunity systems provide defense against mobile genetic elements and are often countered by diverse anti-CRISPR (Acr) proteins....

pnas.org