Kelly Nguyen

@kellythd-nguyen.bsky.social

Group Leader @MRC_LMB /Structural Biologist/Biochemist. Amateur baker in free time #RNAworld #spliceosome #telomerase #telomeres #cryoEM #Xraycrystallography

Kaitlyn continues to break barriers with her innovations for using LEA proteins to solve another major cryo-EM sample prep issue! This work should be of great interest to friends who are struggling with particle orientation bias. Another funtastic Lim X Grant collaboration! @uwbiochem.bsky.social

Kaitlyn Abe@kaitlynabe.bsky.social · 3w ago

1/5: Our latest preprint is out! We show that LEA proteins can diversify particle orientations in cryo-EM, helping to overcome preferred orientation at the air-water interface (AWI). www.biorxiv.org/cgi/content/... with @cijilim.bsky.social and Tim Grant #CryoEM #LEAproteins

Honored to be elected to EMBO,together with Manu, Julian and ex-benchmate @wojtekgalej.bsky.social. I’m grateful to all past and present Iab members for their amazing work and support from colleagues, mentors and family over the years.

MRC Laboratory of Molecular Biology@mrclmb.ac.uk · last mo.

Congratulations to LMB Group Leaders Emmanuel Derivery, Kelly Nguyen and Julian Sale, who have all been elected members of @EMBO.org! Read more about their research at the LMB here: mrclmb.ac.uk/news-events/... #LMBNews @deriverylab.bsky.social @kellythd-nguyen.bsky.social @juliansalelab.bsky.social

Portrait photographs of Julian Sale, Emmanuel Derivery and Kelly Nguyen

New paper! How do RNAs "know" where to go inside a cell? We dug into the sequence elements that route RNAs to the right place. It turns out that, in mammals, they're surprisingly massive (>200 nt), multipartite, and wonderfully complicated. 🧵

Earlier this week I posted an example of a fake western blot provided by ThermoFisher to demonstrate the validity of a p53 antibody. I considered it an amusing curiosity. In fact Thermo Fisher Scientific has systematically manipulated antibody validation data!

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Interested in molecular motors? Don’t miss this wonderful symposium in Salamanca on "The Structure and Workings of Molecular Machines" with an outstanding lineup of speakers. 📍 Salamanca, Spain 📅 Monday, June 22, 2026 🎟️ Attendance is free, but registration is required 👇👇👇

Poster for “The Structure and Workings of Molecular Machines” international symposium, taking place Monday, June 22, 2026, at the Centro Internacional del Español, CIE-USAL, in Salamanca, Spain. The poster shows a colorful molecular-structure background and lists invited speakers Carlos Bustamante, Adam Frost, Taekjip Ha, Fernando Moreno, Eva Nogales, Félix Ritort, José M. Valpuesta, and Elizabeth Villa. It includes a QR code for the full program and registration and notes that attendance is free but registration is required.

Oxygen gradients reshape cross-feeding through emergent spatial organization of gut commensal bacteria www.biorxiv.org/content/10.6... Use of isotope labels and cryo-CLEM-FIB-SIMS to study microbial communities by Hannah Ochner. Collaboration with @kiranrpatil.bsky.social @jmghigolab.bsky.social

Oxygen gradients reshape cross-feeding through emergent spatial organization of gut commensal bacteria

Microbial interactions unfold within environments structured by physical transport and chemical gradients. Yet most mechanistic studies rely on well-mixed systems that mask the reciprocal influences of environmental heterogeneity on metabolism and ecology. Here, we investigate how the physical environment modulates the interaction between the gut commensal Bacteroides thetaiotaomicron and Escherichia coli . In anoxic liquid culture, cell-resolved isotope imaging and genetic perturbations reveal exploitative cross-feeding, where E. coli consumes diffusible sugars released by B . thetaiotaomicron during starch degradation. When exposed to intestinal-like oxygen gradients in microfluidics, the interaction is restructured by spatial organization. The species self-organize into complementary niches: E. coli locally depletes sugars and oxygen, thereby expanding the anoxic niche required by B. thetaiotaomicron . A reactive transport model confirms that this organization arises from coupled feedback between physical transport and metabolic reaction rates. Together, our results reveal how physical structure and chemical gradients convert an exploitative cross-feeding interaction into a dynamic niche-construction process that generates emergent spatial organization and stabilizes coexistence. ### Competing Interest Statement The authors have declared no competing interest.

biorxiv.org

The early release version of our #cryoEM work on CDK11-cyclin L-SAP30BP has now been published at Nature Communications: www.nature.com/articles/s41... We got very helpful comments from the reviewers and added more structural analysis and biochemistry to support our conclusions. Please have a look!

Cryo-EM structures of the CDK11-cyclin L-SAP30BP complex reveal mechanisms of CDK11 regulation - Nature Communications

McGeoch and co-authors use cryogenic electron microscopy and biochemistry to determine the structure of the CDK11-cyclin L-SAP30BP complex and elucidate the regulation of CDK11 by SAP30BP within the t...

nature.com

Basil Greber@bjgreber.bsky.social · 4mo ago

Have a look at our latest results on #CDK regulation, just posted as a pre-print! This study was spearheaded by PhD student Amy McGeoch. Amy has determined the #cryoEM structure of the CDK11-cyclin L-SAP30B complex, an important regulator of #spliceosome activation. www.biorxiv.org/content/10.6...

Depictions of the structure of CDK11-cyclin L-SAP30BP. Four cryo-EM densities are shown at the top, two molecules models at the bottom. CDK11 is green, cyclin L is purple, and SAP30BP is yellow.