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PXD061083

PXD061083 is an original dataset announced via ProteomeXchange.

Dataset Summary
TitleMesoscale regulation of microtubule-organising centres by the E3 ligase TRIM37
DescriptionCentrosomes ensure accurate chromosome segregation during cell division. Although the regulation of centrosome number is well-established, less is known about the suppression of non-centrosomal Microtubule-Organising Centres (ncMTOCs). The E3 ligase TRIM37, implicated in Mulibrey nanism and 17q23-amplified cancers, has emerged as a key regulator of both centrosomes and ncMTOCs. Yet, the mechanism by which TRIM37 achieves enzymatic activation to target these mesoscale structures had thus far remained unknown. Here, we elucidate the activation process of TRIM37, unveiling a process that initiates with TRAF domain-directed substrate recognition, followed by B-box domain-mediated oligomerisation, and culminates in RING domain dimerisation. Using optogenetics, we demonstrate that the E3 activity of TRIM37 is directly coupled to the assembly state of its substrates, being activated only when centrosomal proteins cluster into higher-order assemblies resembling MTOCs. This regulatory framework provides a mechanistic basis for understanding TRIM37-driven pathologies and echoes the restriction of the HIV capsid by TRIM5, thus unveiling a conserved activation blueprint among TRIM proteins to control turnover of complexes assembled at the mesoscale level.
HostingRepositoryPRIDE
AnnounceDate2025-03-18
AnnouncementXMLSubmission_2025-03-18_10:55:11.531.xml
DigitalObjectIdentifier
ReviewLevelPeer-reviewed dataset
DatasetOriginOriginal dataset
RepositorySupportUnsupported dataset by repository
PrimarySubmitterZhong YI Yeow
SpeciesList scientific name: Homo sapiens (Human); NCBI TaxID: 9606;
ModificationListbiotinylated residue
InstrumentQ Exactive
Dataset History
RevisionDatetimeStatusChangeLog Entry
02025-02-22 11:38:06ID requested
12025-03-18 10:55:11announced
Publication List
Dataset with its publication pending
Keyword List
submitter keyword: E3 ubiquitin ligases, centrosomes and MTOCs, 17q23-amplified cancers,TRIM37, Mulibrey Nanism disorder, TRIM proteins, mesoscale protein assembly
Contact List
Andrew J Holland
contact affiliationDepartment of Molecular Biology and Genetics, Johns Hopkins University School of Medicine, Baltimore, MD 21205, USA.
contact emailaholland@jhmi.edu
lab head
Zhong YI Yeow
contact affiliationJohns Hopkins School of Medicine
contact emailzyeow1@jh.edu
dataset submitter
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Dataset FTP location
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