SUMO-specific isopeptidase USPL1
Definition:
SUMO-specific isopeptidase involved in protein desumoylation. Specifically binds SUMO proteins with a higher affinity for SUMO2 and SUMO3 which it cleaves more efficiently. Also able to process full-length SUMO proteins to their mature forms. Plays a key role in RNA polymerase-II-mediated snRNA transcription in the Cajal bodies. Is a component of complexes that can bind to U snRNA genes.
References:
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[1]. Sarah Schulz, et al. Ubiquitin-specific protease-like 1 (USPL1) is a SUMO isopeptidase with essential, non-catalytic functions. EMBO Rep. 2012 Oct;13(10):930-8. [Content Brief]
[2]. Saskia Hutten, et al. A role for the Cajal-body-associated SUMO isopeptidase USPL1 in snRNA transcription mediated by RNA polymerase II. J Cell Sci. 2014 Mar 1;127(Pt 5):1065-78. [Content Brief]
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