Chuankai Cheng

@ahoiching.bsky.social

6/ What makes this more than one bacterium is the phylogeny. Both lineages use (p)ppGpp, but not in the same way. The Proteobacterial solution, exemplified by E. coli, acts directly on RNA polymerase. In Firmicutes, the control we describe is routed through GTP instead.

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**Postdoc opportunity** Lead research on trace metal impacts on nitrogen fixation and phytoplankton mediated carbon export. Previous proteomics experience highly desired. Details below, please ping me if difficult to read!

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(bacterial) chromosome segregationists take note 👇 membrane-anchoring of the 𝘰𝘳𝘪𝘊 region to ensure proper daughter chromosome segregation after replication initiation – proposed decades ago but never substantiated... 👉now shown for 𝘚. 𝘢𝘶𝘳𝘦𝘶𝘴 by mariana pinho's lab

figure 10 
from Jacob, F., Brenner, S., and Cuzin, F. (1964) Cold Spring Harbor Symp. Quant. Biol. 28, 329-348
bioRxiv Microbiology@biorxiv-microbiol.bsky.social · 6mo ago

Nucleoid-binding protein RicO anchors replication origins to the membrane to ensure correct chromosome segregation in Staphylococcus aureus https://www.biorxiv.org/content/10.64898/2026.03.06.710092v1

This paper originated from a simple idea: Since we want to study SAR11 growth physiology, let’s look at how one SAR11 bacterium becomes two SAR11 bacteria, inspired by the quote from François Jacob, “The dream of a bacterium: to produce two bacteria”.

Cameron Thrash@jcamthrash.bsky.social · 8mo ago

Our latest. Led by the very talented @ahoiching.bsky.social Cell cycle dysregulation of globally important SAR11 bacteria resulting from environmental perturbation www.nature.com/articles/s41... #jcampubs 🌊

Funded postdoc + PhD opportunities in marine microbial ecology! Please share with folks that might be interested. Start date is flexible (fall 2025 to summer 2026) More about the lab + applying (Postdoc rolling, PhD apps due Oct/Jan): sites.google.com/uncc.edu/mic...

Luo Lab - Microbial Ecology - join

The Luo Lab is accepting applications for funded Postdoc and PhD opportunities. Details below. Lab members will have access to state-of-the art wet lab, and computing, and sequencing resources, inclu...

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