OTUB1

From Wikipedia, the free encyclopedia
OTU domain, ubiquitin aldehyde binding 1
Available structures
PDB Ortholog search: PDBe, RCSB
Identifiers
SymbolsOTUB1; OTB1; OTU1
External IDsOMIM: 608337 MGI: 2147616 HomoloGene: 9772 GeneCards: OTUB1 Gene
EC number3.4.19.12
RNA expression pattern
More reference expression data
Orthologs
SpeciesHumanMouse
Entrez55611107260
EnsemblENSG00000167770ENSMUSG00000024767
UniProtQ96FW1Q7TQI3
RefSeq (mRNA)NM_017670NM_134150
RefSeq (protein)NP_060140NP_598911
Location (UCSC)Chr 11:
63.75 – 63.77 Mb
Chr 19:
7.2 – 7.21 Mb
PubMed search

Ubiquitin thioesterase OTUB1 also known as otubain-1 is an enzyme that in humans is encoded by the OTUB1 gene.[1][2] Alternative splicing results in multiple transcript variants.

Function

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.[3] 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.[2]

Interactions

OTUB1 has been shown to interact with RNF128[4] and GNB2L1.[3]

References

  1. Balakirev MY, Tcherniuk SO, Jaquinod M, Chroboczek J (Apr 2003). "Otubains: a new family of cysteine proteases in the ubiquitin pathway". EMBO Rep 4 (5): 517–22. doi:10.1038/sj.embor.embor824. PMC 1319179. PMID 12704427. 
  2. 2.0 2.1 "Entrez Gene: OTUB1 OTU domain, ubiquitin aldehyde binding 1". 
  3. 3.0 3.1 Edelmann MJ, Iphöfer A, Akutsu M, Altun M, di Gleria K, Kramer HB, Fiebiger E, Dhe-Paganon S, Kessler BM (March 2009). "Structural basis and specificity of human otubain 1-mediated deubiquitination". Biochem. J. 418 (2): 379–90. doi:10.1042/BJ20081318. PMID 18954305. 
  4. Soares L, Seroogy C, Skrenta H, Anandasabapathy N, Lovelace P, Chung CD, Engleman E, Fathman CG (January 2004). "Two isoforms of otubain 1 regulate T cell anergy via GRAIL". Nat. Immunol. 5 (1): 45–54. doi:10.1038/ni1017. PMID 14661020. 

Further reading


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