Harvard Med Cell Biology

@harvardcellbio.bsky.social

Cell Bio@Harvard Med- dedicated to unraveling how the machines of the cell work. Specializing in membrane/organelles, ubiquitin & protein quality control, chromatin regulation, proteomics, metabolism, and sensory perception.https://cellbio.hms.harvard.edu/

New work from our own Chouchani Lab finds that LRRC58 is the substrate adaptor of an E3 ubiquitin ligase that mediates proteasomal degradation of CDO1, the rate-limiting enzyme of the catabolic shunt of cysteine to taurine in response to altered Cysteine levels. www.nature.com/articles/s41...

Covariation MS uncovers a protein that controls cysteine catabolism - Nature

A mass spectrometry-based approach globally identifies protein regulators of metabolism and reveals the role of LRRC58 in controlling cysteine catabolism.

nature.com

New insights into transcriptional elongation by IWS1 from the @lucas.farnunglab.com lab. This work establishes IWS1 as a scaffold to organiz the elongation complex, illustrating how disordered regions regulate transcription elongationhttps://www.biorxiv.org/content/10.1101/2025.08.28.672863v1

Structure and function of IWS1 in transcription elongation

Transcription elongation by RNA polymerase II is a tightly regulated process that requires coordinated interactions between elongation factors. IWS1 (Interacts with SPT6) has been implicated as a core...

biorxiv.org

Work from our own Corey Allard allardlab.hms.harvard.edu & Nick Bellono reveals a process by which foreign chloroplasts (derived from algae food sources) are incorporated into novel, host-derived organelles termed “kleptosomes". \https://www.sciencedirect.com/science/article/pii/S0092867425006373

A host organelle integrates stolen chloroplasts for animal photosynthesis

Eukaryotic life evolved over a billion years ago when ancient cells engulfed and integrated prokaryotes to become modern mitochondria and chloroplasts…

sciencedirect.com