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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]
Deubiquitinating enzymes (DUBs), also known as deubiquitinating peptidases, deubiquitinating isopeptidases, deubiquitinases, ubiquitin proteases, ubiquitin hydrolases, or ubiquitin isopeptidases, are a large group of proteases that cleave ubiquitin from proteins. Ubiquitin is attached to proteins in order to regulate the degradation of proteins via the proteasome and lysosome; coordinate the cellular localisation of proteins; activate and inactivate proteins; and modulate protein-protein interactions. DUBs can reverse these effects by cleaving the peptide or isopeptide bond between ubiquitin and its substrate protein. In humans there are nearly 100 DUB genes, which can be classified into two main classes: cysteine proteases and metalloproteases. The cysteine proteases comprise ubiquitin-specific proteases (USPs), ubiquitin C-terminal hydrolases (UCHs), Machado-Josephin domain proteases (MJDs) and ovarian tumour proteases (OTU). The metalloprotease group contains only the Jab1/Mov34/Mpr1 Pad1 N-terminal+ (MPN+) (JAMM) domain proteases.
40S ribosomal protein S27a is a protein that in humans is encoded by the RPS27A gene.
60S ribosomal protein L40 (RPL40) is a protein that in humans is encoded by the UBA52 gene.
Ras GTPase-activating protein-binding protein 1 is an enzyme that in humans is encoded by the G3BP1 gene.
Ubiquitin-conjugating enzyme E2 N is a protein that in humans is encoded by the UBE2N gene.
Bleomycin hydrolase is an enzyme that in humans is encoded by the BLMH gene.
NEDD8-activating enzyme E1 catalytic subunit is a protein that in humans is encoded by the UBA3 gene.
Ubiquitin carboxyl-terminal hydrolase 8 is an enzyme that in humans is encoded by the USP8 gene.
E3 ubiquitin-protein ligase RNF216 is an enzyme that in humans is encoded by the RNF216 gene.
Ubiquitin specific protease 4 (USP4) is an enzyme that cleaves ubiquitin from a number of protein substrates. Prior to the standardization of nomenclature USP4 was known as UNP, and was one of the first deubiquitinating enzymes to be identified in mammals. In the mouse and human the USP4 protein is encoded by a gene containing 22 exons.
RING finger protein 31 is a protein that in humans is encoded by the RNF31 gene.
Ubiquitin specific processing protease 37 is an enzyme that in humans, is encoded by the USP37 gene.
Ubiquitin-conjugating enzyme E2 J1 is a protein that in humans is encoded by the UBE2J1 gene.
NEDD8-conjugating enzyme Ubc12 is a protein that in humans is encoded by the UBE2M gene.
Ubiquitin carboxyl-terminal hydrolase 2 is an enzyme that in humans is encoded by the USP2 gene.
Ubiquitin carboxyl-terminal hydrolase 20 is an enzyme that in humans is encoded by the USP20 gene.
Sentrin-specific protease 8 is an enzyme that in humans is encoded by the SENP8 gene.
Ubiquitin-fold modifier 1, also known as UFM1, is a protein which in humans is encoded by the UFM1 gene.
Ubiquitin-conjugating enzyme E2 R2 is a protein that in humans is encoded by the UBE2R2 gene.
Ubiquitin carboxyl-terminal hydrolase 51 is an enzyme that in humans is encoded by the USP51 gene.