Peter Cullen
@peterjcullen1.bsky.social
250 followers 160 following 6 posts
University Researcher, All things: Endosomes, Lysosomes, Retromer, Retriever, Sorting nexins, Commander, RABs, et al.
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Reposted by Peter Cullen
Structures of EHD2 filaments on curved membranes provide a model for caveolar neck stabilization https://www.biorxiv.org/content/10.1101/2025.06.05.658037v1
Swifts have today arrived over the house. Summer’s here!!
That looks fun! Hobbies?
Reposted by Peter Cullen
Moving obituary of David Stephens, "in many ways, the perfect academic" journals.biologists.com/jcs/article/...
Reposted by Peter Cullen
Pls re-skeet! There's a postdoc job available to join us in Bristol! We're looking for a molecular cell biologist to help us investigate plasma membrane proteostasis in neurons. Apply here by 23 April: www.jobs.ac.uk/job/DMO097/r.... If interested, do contact me and check out grieve-lab.com! Thanks!
Reposted by Peter Cullen
SNX-BAR proteins 5 and 6 are required for NCOA7-AS antiviral activity against influenza A virus https://www.biorxiv.org/content/10.1101/2025.04.01.646557v1
Reposted by Peter Cullen
Lysosomal acidification is key for cellular health, with impairment linked to aging & neurodegenerative diseases. Lin et al. identify USP45 as a negative regulator of autophagy, inhibiting V-ATPase localization to autolysosomes via Coronin 1B-actin modulation. rupress.org/jcb/article/...
Reposted by Peter Cullen
Identification of a VPS29 isoform with restricted association to Retriever and Retromer accessory proteins through auto-inhibition. https://www.biorxiv.org/content/10.1101/2025.02.04.636264v1
Reposted by Peter Cullen
Identification of a RAB32-LRMDA-Commander membrane trafficking complex reveals the molecular mechanism of human oculocutaneous albinism type 7 https://www.biorxiv.org/content/10.1101/2025.02.04.636395v1
Reposted by Peter Cullen
And now onto @carlosantonplagaro.bsky.social from the Pete Cullen lab using BioID to understand the role of Rabs in fate determination in endosomal sorting - great work, Carlos! #UKMT2024
Reposted by Peter Cullen
This is an great opportunity. Andrew, his science, and his team are amazing!
Exciting 3-year postdoc opportunity with @carter-lab.bsky.social within a programme aimed at identifying the links between microtubule motors and axonal cargos.
Read more about the role here:
www.nature.com/naturecareer...
Apply by 30 DEC
#ScienceJobs #CambridgeJobs #PostdocJobs #GenomeEngineering
Reposted by Peter Cullen
Endosome maturation is orchestrated by inside-out proton signaling through a Na+/H+ exchanger and pH-dependent Rab GTPase cycling https://www.biorxiv.org/content/10.1101/2024.12.09.627558v1
Reposted by Peter Cullen
Finally my first author preprint at Cullen's lab is out! Amazing collaboration with Kevin and @brettcollins.bsky.social where, by using dedicated proximity proteomics, Biochemistry, crystallography and structural prediction, we show new aspects of human Retromer complex acting as hub for RAB GTPases
Reposted by Peter Cullen
Very proud to be involved in this work with the Cullen lab. Carlos's proteomics is some of the nicest I've seen! Very carefully controlled proximity labelling reveals a number of novel Rab GTPase activators and regulatory proteins are directly associated with Retromer on the endosome.