UBR1

Ubiquitin protein ligase E3 component n-recognin 1
Available structures PDB Ortholog search: PDBe, RCSB List of PDB id codes 3NY1​
Identifiers
Symbols	UBR1 ; JBS
External IDs	OMIM: 605981 MGI: 1277977 HomoloGene: 7582 GeneCards: UBR1 Gene
Gene ontology Molecular function • zinc ion binding • ligase activity • ubiquitin protein ligase activity • leucine binding Cellular component • ubiquitin ligase complex • proteasome complex • cytoplasm • cytosol Biological process • protein ubiquitination • negative regulation of TOR signaling • cellular response to leucine • ubiquitin-dependent protein catabolic process via the N-end rule pathway Sources: Amigo / QuickGO
Orthologs
Species	Human	Mouse
Entrez	197131	22222
Ensembl	ENSG00000159459	ENSMUSG00000027272
UniProt	Q8IWV7	O70481
RefSeq (mRNA)	NM_174916	NM_009461
RefSeq (protein)	NP_777576	NP_033487
Location (UCSC)	Chr 15: 42.94 – 43.11 Mb	Chr 2: 120.86 – 120.97 Mb
PubMed search

The human gene UBR1 encodes the enzyme ubiquitin-protein ligase E3 component n-recognin 1.^[1][2]

The N-end rule pathway is one proteolytic pathway of the ubiquitin system. The recognition component of this pathway, encoded by this gene, binds to a destabilizing N-terminal residue of a substrate protein and participates in the formation of a substrate-linked multiubiquitin chain. This leads to the eventual degradation of the substrate protein. The protein described in this record has a RING-type zinc finger and a UBR-type zinc finger. Mutations in this gene have been associated with Johanson-Blizzard syndrome.^[2]

References

1. Kwon YT, Reiss Y, Fried VA, Hershko A, Yoon JK, Gonda DK, Sangan P, Copeland NG, Jenkins NA, Varshavsky A (Aug 1998). "The mouse and human genes encoding the recognition component of the N-end rule pathway". Proc Natl Acad Sci U S A 95 (14): 7898–903. doi:10.1073/pnas.95.14.7898. PMC 20901. PMID 9653112.
2. "Entrez Gene: UBR1 ubiquitin protein ligase E3 component n-recognin 1".

Further reading

• Varshavsky A (1996). "The N-end rule: functions, mysteries, uses". Proc. Natl. Acad. Sci. U.S.A. 93 (22): 12142–9. doi:10.1073/pnas.93.22.12142. PMC 37957. PMID 8901547.
• Chiannilkulchai N, Pasturaud P, Richard I, et al. (1995). "A primary expression map of the chromosome 15q15 region containing the recessive form of limb-girdle muscular dystrophy (LGMD2A) gene". Hum. Mol. Genet. 4 (4): 717–25. doi:10.1093/hmg/4.4.717. PMID 7633422.
• Dgany O, Avidan N, Delaunay J, et al. (2003). "Congenital Dyserythropoietic Anemia Type I Is Caused by Mutations in Codanin-1". Am. J. Hum. Genet. 71 (6): 1467–74. doi:10.1086/344781. PMC 378595. PMID 12434312.
• Strausberg RL, Feingold EA, Grouse LH, et al. (2003). "Generation and initial analysis of more than 15,000 full-length human and mouse cDNA sequences". Proc. Natl. Acad. Sci. U.S.A. 99 (26): 16899–903. doi:10.1073/pnas.242603899. PMC 139241. PMID 12477932.
• Ota T, Suzuki Y, Nishikawa T, et al. (2004). "Complete sequencing and characterization of 21,243 full-length human cDNAs". Nat. Genet. 36 (1): 40–5. doi:10.1038/ng1285. PMID 14702039.
• Beausoleil SA, Jedrychowski M, Schwartz D, et al. (2004). "Large-scale characterization of HeLa cell nuclear phosphoproteins". Proc. Natl. Acad. Sci. U.S.A. 101 (33): 12130–5. doi:10.1073/pnas.0404720101. PMC 514446. PMID 15302935.
• Yin J, Kwon YT, Varshavsky A, Wang W (2005). "RECQL4, mutated in the Rothmund-Thomson and RAPADILINO syndromes, interacts with ubiquitin ligases UBR1 and UBR2 of the N-end rule pathway". Hum. Mol. Genet. 13 (20): 2421–30. doi:10.1093/hmg/ddh269. PMID 15317757.
• Gerhard DS, Wagner L, Feingold EA, et al. (2004). "The Status, Quality, and Expansion of the NIH Full-Length cDNA Project: The Mammalian Gene Collection (MGC)". Genome Res. 14 (10B): 2121–7. doi:10.1101/gr.2596504. PMC 528928. PMID 15489334.
• Kwak KS, Zhou X, Solomon V, et al. (2005). "Regulation of protein catabolism by muscle-specific and cytokine-inducible ubiquitin ligase E3alpha-II during cancer cachexia". Cancer Res. 64 (22): 8193–8. doi:10.1158/0008-5472.CAN-04-2102. PMID 15548684.
• Tasaki T, Mulder LC, Iwamatsu A, et al. (2005). "A Family of Mammalian E3 Ubiquitin Ligases That Contain the UBR Box Motif and Recognize N-Degrons". Mol. Cell. Biol. 25 (16): 7120–36. doi:10.1128/MCB.25.16.7120-7136.2005. PMC 1190250. PMID 16055722.
• Stelzl U, Worm U, Lalowski M, et al. (2005). "A human protein-protein interaction network: a resource for annotating the proteome". Cell 122 (6): 957–68. doi:10.1016/j.cell.2005.08.029. PMID 16169070.
• Zenker M, Mayerle J, Lerch MM, et al. (2006). "Deficiency of UBR1, a ubiquitin ligase of the N-end rule pathway, causes pancreatic dysfunction, malformations and mental retardation (Johanson-Blizzard syndrome)". Nat. Genet. 37 (12): 1345–50. doi:10.1038/ng1681. PMID 16311597.
• Sasaki T, Kojima H, Kishimoto R, et al. (2006). "Spatiotemporal regulation of c-Fos by ERK5 and the E3 ubiquitin ligase UBR1, and its biological role". Mol. Cell 24 (1): 63–75. doi:10.1016/j.molcel.2006.08.005. PMID 17018293.
• Zou W, Wang J, Zhang DE (2007). "Negative Regulation of ISG15 E3 ligase EFP through its autoISGylation". Biochem. Biophys. Res. Commun. 354 (1): 321–7. doi:10.1016/j.bbrc.2006.12.210. PMC 1858649. PMID 17222803.
• Sakane A, Hatakeyama S, Sasaki T (2007). "Involvement of Rabring7 in EGF receptor degradation as an E3 ligase". Biochem. Biophys. Res. Commun. 357 (4): 1058–64. doi:10.1016/j.bbrc.2007.04.052. PMID 17462600.
• Wei S, Lin LF, Yang CC, et al. (2007). "Thiazolidinediones modulate the expression of beta-catenin and other cell-cycle regulatory proteins by targeting the F-box proteins of Skp1-Cul1-F-box protein E3 ubiquitin ligase independently of peroxisome proliferator-activated receptor gamma". Mol. Pharmacol. 72 (3): 725–33. doi:10.1124/mol.107.035287. PMID 17569795.