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Coiled-coil-domain-mediated TRIM E3 protein condensation modulates enzymatic activity and functional specificity

Published:24 June 2025 DOI: 10.1016/j.celrep.2025.115766 PMID: 40450692
Qi Chen,?Peiguo Yang

Abstract

Tripartite motif (TRIM) proteins are E3 ligases with modular structures involved in diverse cellular functions. Whether biomolecular condensation broadly regulates TRIM proteins remains unclear. Here, we systematically examine 75 TRIMs in mammalian cells and find that the majority can form condensates, either individually or together with other TRIMs. The coiled-coil (CC) domain is essential for TRIM condensation, and disease-related single-nucleotide polymorphisms (SNPs) in this domain impair condensate formation. We show that condensation modulates E3 ligase activity of several TRIMs in a context-dependent manner using cellular auto-ubiquitination and biotinylated-ubiquitination assays. Proteomic analysis reveals that proteins within 21 TRIM condensates are linked to key cellular pathways and diseases. Functional screening uncovers that certain TRIM condensates regulate centriolar satellite organization, cilia assembly, and microtubule stabilization. Our work provides foundational insights into the condensation and functions of TRIM family proteins and establishes a framework for studying co-condensation specificity among highly homologous proteins.

Substances (4)

Materials
Procduct Name CAS Molecular Formula Supplier Price
methyl ((1S,2R,3S,4R)-2,3-dihydroxy-4-((2-(3-((trifluoromethyl)thio)phenyl)pyrazolo[1,5-a]pyrimidin-7-yl)amino)cyclopentyl)sulfamate 1450833-55-2 C19H20F3N5O5S2 65 suppliers $38.00-$3200.00
methyl ((1S,2R,3S,4R)-2,3-dihydroxy-4-((2-(3-((trifluoromethyl)thio)phenyl)pyrazolo[1,5-a]pyrimidin-7-yl)amino)cyclopentyl)sulfamate 1450833-55-2 C19H20F3N5O5S2 65 suppliers $38.00-$3200.00
methyl ((1S,2R,3S,4R)-2,3-dihydroxy-4-((2-(3-((trifluoromethyl)thio)phenyl)pyrazolo[1,5-a]pyrimidin-7-yl)amino)cyclopentyl)sulfamate 1450833-55-2 C19H20F3N5O5S2 65 suppliers $38.00-$3200.00
methyl ((1S,2R,3S,4R)-2,3-dihydroxy-4-((2-(3-((trifluoromethyl)thio)phenyl)pyrazolo[1,5-a]pyrimidin-7-yl)amino)cyclopentyl)sulfamate 1450833-55-2 C19H20F3N5O5S2 65 suppliers $38.00-$3200.00

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