Stepan Denisov

@stepadenisov.bsky.social

Bioinformatics, molecular biology & evolution The University of Manchester, UK

Job AD. Research Directions: 1. Selection in early development; Pop gen methods applied to new technologies, i.e. scDNA-seq with D. Shao 2. Study of hypermutability and selection using population cohorts with E. Koch 3. Evolution of Mutagenesis with M. Penenell & @jgschraiber.bsky.social

POSTDOCTORAL RESEARCHER - McDermott Center HG&D - Seplyarskiy Lab

Discover POSTDOCTORAL RESEARCHER - McDermott Center HG&D - Seplyarskiy Lab and other PostDoc jobs in Dallas, TX and apply online today!

jobs.utsouthwestern.edu

Hot off the press! Our latest paper led by @fernpizza.bsky.social, understanding how plasmids evolve inside cells. These small, self-replicating DNA circles live inside bacteria and carry antibiotic resistance genes, but also compete with one another to replicate. 1/ www.science.org/doi/10.1126/...

Intracellular competition shapes plasmid population dynamics

From populations of multicellular organisms to selfish genetic elements, conflicts between levels of biological organization are central to evolution. Plasmids are extrachromosomal, self-replicating g...

science.org

“The prohibited activities would include joint research, co-authorship on papers, and advising a foreign graduate student or postdoctoral fellow. The language is retroactive, meaning any interactions during the previous 5 years could make a scientist ineligible for future federal funding.”

U.S. Congress considers sweeping ban on Chinese collaborations

Researchers speak out against proposal that would bar funding for U.S. scientists working with Chinese partners or training Chinese students

science.org

The exciting next instalment of Mutations in Time and Space... Open for registration now

Wellcome Connecting Science Learning and Training@eventswcs.bsky.social · 11mo ago

Explore the origins, patterns and consequences of mutations across biological systems! #MITS26 🗓️ Conference dates: 13-15 April 2026 Participate in expert-led knowledge exchange on how genome evolution shapes human health and ageing 🧬 Check out our exciting speakers ➡️ bit.ly/4hmbnyr #Genomics

Wellcome Connecting Science hybrid conference 
Mutations in Time and Space

Conference dates: 13-15 April 2026 
Location: Hinxton Hall Conference Centre, UK and online. 

Bursary deadline: 12 January 2026
Abstract deadline: 2 February 2026
In-person registration deadline: 16 March 2026
Virtual deadline: 6 April 2026

Sometimes we’re unsatisfied with a thing we made because when it only existed in our head, we saw all the things it could have been and when it’s done we know all the things that it isn’t, but we can’t see the way it expands into a million new things when someone else unpacks it in their head. 🖊️🦑

Frustrated little dude gripping a pencil saying “how do I pack this down into something I can actually share?” While swirling rainbows labeled “INFINITE POTENTIAL” float around them.

Little dude frowns at a tiny grey box, exclaiming “all that work for THIS?!”

Little dude shoves the grey box into another little guy’s hands; Frowning, stomping off, and saying “Here you go, I made this, it sucks.”

Second little dude cracks open the box, swirling rainbows project out onto their face.

Second little dude stares in awe at all the swirling rainbows now floating around them.

Dierks et al. engineered an replisome that replicates only target plasmids at mutation rates 100,000 times higher than normal but leaving the rest of the genome unchanged. They evolved TEM-1 β-lactamase to gain strong resistance to several antibiotics in under a week. www.science.org/doi/10.1126/...

An orthogonal T7 replisome for continuous hypermutation and accelerated evolution in E. coli

Systems that perform continuous hypermutation of designated genes without compromising the integrity of the host genome can substantially accelerate the evolution of new or enhanced protein functions....

science.org

New paper alert! 🚨 Plasmids promote bacterial evolution through a copy number-driven increase in mutation rate. We combine theory, simulations, experimental evolution, and bioinformatics to demonstrate that mutation rates scale with plasmid copy number. Let's dive in! 🧵👇

Plasmids promote bacterial evolution through a copy number-driven increase in mutation rate

Plasmids are autonomously replicating DNA molecules that stably coexist with chromosomes in bacterial cells. These genetic elements drive horizontal gene transfer and play a fundamental role in bacter...

biorxiv.org

Super cool talk by Parker Crossland showing that DNA in single fixed cells can be amplified & sequenced (B. subtilis, E. coli & yeast). Only 14 cells needed to cover the full yeast genome 🤯 Adding barcodes captures rare genotypes missed by colony picking 🦠 Preprint 👇🏽 #SMBE2025

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