OTUB1 | |||||||||||||||||||||||||||||||||||||||||||||||||||
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Identifiers | |||||||||||||||||||||||||||||||||||||||||||||||||||
Aliases | OTUB1 , OTB1, OTU1, HSPC263, OTU deubiquitinase, ubiquitin aldehyde binding 1 | ||||||||||||||||||||||||||||||||||||||||||||||||||
External IDs | OMIM: 608337; MGI: 2147616; HomoloGene: 134542; GeneCards: OTUB1; OMA:OTUB1 - orthologs | ||||||||||||||||||||||||||||||||||||||||||||||||||
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Wikidata | |||||||||||||||||||||||||||||||||||||||||||||||||||
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Ubiquitin thioesterase OTUB1 also known as otubain-1 is an enzyme that in humans is encoded by the OTUB1 gene. [5] [6] Alternative splicing results in multiple transcript variants.
Otubain-1 is a member of the OTU (ovarian tumor) superfamily of predicted cysteine proteases. The encoded protein is a highly specific ubiquitin iso-peptidase, and cleaves ubiquitin from branched poly-ubiquitin chains, being specific for lysine48 -linked polyubiquitin but not lysine63 -linked polyubiquitin. [7] It interacts with another ubiquitin protease and an E3 ubiquitin ligase that inhibits cytokine gene transcription in the immune system. It is proposed to function in specific ubiquitin-dependent pathways, possibly by providing an editing function for polyubiquitin chain growth. [6]
OTUB1 has been shown to interact with RNF128 [8] and GNB2L1. [7]