From Wikipedia, the free encyclopedia
Jump to: navigation, search
Ubiquitin-conjugating enzyme E2I
Protein UBE2I PDB 1a3s.png
PDB rendering based on 1a3s.
Available structures
PDB Ortholog search: PDBe, RCSB
Symbols UBE2I ; C358B7.1; P18; UBC9
External IDs OMIM601661 MGI107365 HomoloGene5574 ChEMBL: 1741191 GeneCards: UBE2I Gene
EC number
RNA expression pattern
PBB GE UBE2I 213535 s at tn.png
PBB GE UBE2I 208760 at tn.png
PBB GE UBE2I 211008 s at tn.png
More reference expression data
Species Human Mouse
Entrez 7329 22196
Ensembl ENSG00000103275 ENSMUSG00000015120
UniProt P63279 P63280
RefSeq (mRNA) NM_003345 NM_001177609
RefSeq (protein) NP_003336 NP_001171080
Location (UCSC) Chr 16:
1.31 – 1.33 Mb
Chr 17:
25.26 – 25.27 Mb
PubMed search [1] [2]

SUMO-conjugating enzyme UBC9 is a protein that in humans is encoded by the UBE2I gene.[1]


The modification of proteins with ubiquitin is an important cellular mechanism for targeting abnormal or short-lived proteins for degradation. Ubiquitination involves at least three classes of enzymes: ubiquitin-activating enzymes, or E1s, ubiquitin-conjugating enzymes, or E2s, and ubiquitin-protein ligases, or E3s. This gene encodes a member of the E2 ubiquitin-conjugating enzyme family. Four alternatively spliced transcript variants encoding the same protein have been found for this gene.[2]


UBE2I has been shown to interact with:


  1. ^ Watanabe TK, Fujiwara T, Kawai A, Shimizu F, Takami S, Hirano H, Okuno S, Ozaki K, Takeda S, Shimada Y, Nagata M, Takaichi A, Takahashi E, Nakamura Y, Shin S (March 1996). "Cloning, expression, and mapping of UBE2I, a novel gene encoding a human homologue of yeast ubiquitin-conjugating enzymes which are critical for regulating the cell cycle". Cytogenet Cell Genet 72 (1): 86–9. doi:10.1159/000134169. PMID 8565643. 
  2. ^ "Entrez Gene: UBE2I ubiquitin-conjugating enzyme E2I (UBC9 homolog, yeast)". 
  3. ^ Firestein R, Feuerstein N (March 1998). "Association of activating transcription factor 2 (ATF2) with the ubiquitin-conjugating enzyme hUBC9. Implication of the ubiquitin/proteasome pathway in regulation of ATF2 in T cells". J. Biol. Chem. 273 (10): 5892–902. doi:10.1074/jbc.273.10.5892. PMID 9488727. 
  4. ^ Poukka H, Aarnisalo P, Karvonen U, Palvimo JJ, Jänne OA (July 1999). "Ubc9 interacts with the androgen receptor and activates receptor-dependent transcription". J. Biol. Chem. 274 (27): 19441–6. doi:10.1074/jbc.274.27.19441. PMID 10383460. 
  5. ^ Koldamova RP, Lefterov IM, DiSabella MT, Lazo JS (Dec 1998). "An evolutionarily conserved cysteine protease, human bleomycin hydrolase, binds to the human homologue of ubiquitin-conjugating enzyme 9". Mol. Pharmacol. 54 (6): 954–61. PMID 9855622. 
  6. ^ a b Rual JF, Venkatesan K, Hao T, Hirozane-Kishikawa T, Dricot A, Li N, Berriz GF, Gibbons FD, Dreze M, Ayivi-Guedehoussou N, Klitgord N, Simon C, Boxem M, Milstein S, Rosenberg J, Goldberg DS, Zhang LV, Wong SL, Franklin G, Li S, Albala JS, Lim J, Fraughton C, Llamosas E, Cevik S, Bex C, Lamesch P, Sikorski RS, Vandenhaute J, Zoghbi HY, Smolyar A, Bosak S, Sequerra R, Doucette-Stamm L, Cusick ME, Hill DE, Roth FP, Vidal M (October 2005). "Towards a proteome-scale map of the human protein-protein interaction network". Nature 437 (7062): 1173–8. doi:10.1038/nature04209. PMID 16189514. 
  7. ^ Machon O, Backman M, Julin K, Krauss S (October 2000). "Yeast two-hybrid system identifies the ubiquitin-conjugating enzyme mUbc9 as a potential partner of mouse Dac". Mech. Dev. 97 (1-2): 3–12. doi:10.1016/s0925-4773(00)00402-0. PMID 11025202. 
  8. ^ Ling Y, Sankpal UT, Robertson AK, McNally JG, Karpova T, Robertson KD. "Modification of de novo DNA methyltransferase 3a (Dnmt3a) by SUMO-1 modulates its interaction with histone deacetylases (HDACs) and its capacity to repress transcription". Nucleic Acids Res. 32 (2): 598–610. doi:10.1093/nar/gkh195. PMC 373322. PMID 14752048. 
  9. ^ Kang ES, Park CW, Chung JH (Dec 2001). "Dnmt3b, de novo DNA methyltransferase, interacts with SUMO-1 and Ubc9 through its N-terminal region and is subject to modification by SUMO-1". Biochem. Biophys. Res. Commun. 289 (4): 862–8. doi:10.1006/bbrc.2001.6057. PMID 11735126. 
  10. ^ a b c Knipscheer P, Flotho A, Klug H, Olsen JV, van Dijk WJ, Fish A, Johnson ES, Mann M, Sixma TK, Pichler A (August 2008). "Ubc9 sumoylation regulates SUMO target discrimination". Mol. Cell 31 (3): 371–82. doi:10.1016/j.molcel.2008.05.022. PMID 18691969. 
  11. ^ Ryu SW, Chae SK, Kim E (Dec 2000). "Interaction of Daxx, a Fas binding protein, with sentrin and Ubc9". Biochem. Biophys. Res. Commun. 279 (1): 6–10. doi:10.1006/bbrc.2000.3882. PMID 11112409. 
  12. ^ Hahn SL, Wasylyk B, Criqui-Filipe P, Criqui P (September 1997). "Modulation of ETS-1 transcriptional activity by huUBC9, a ubiquitin-conjugating enzyme". Oncogene 15 (12): 1489–95. doi:10.1038/sj.onc.1201301. PMID 9333025. 
  13. ^ Shi Y, Zou M, Farid NR, Paterson MC (Dec 2000). "Association of FHIT (fragile histidine triad), a candidate tumour suppressor gene, with the ubiquitin-conjugating enzyme hUBC9". Biochem. J. 352 (2): 443–8. doi:10.1042/0264-6021:3520443. PMC 1221476. PMID 11085938. 
  14. ^ Mingot JM, Kostka S, Kraft R, Hartmann E, Görlich D (July 2001). "Importin 13: a novel mediator of nuclear import and export". EMBO J. 20 (14): 3685–94. doi:10.1093/emboj/20.14.3685. PMC 125545. PMID 11447110. 
  15. ^ a b Saltzman A, Searfoss G, Marcireau C, Stone M, Ressner R, Munro R, Franks C, D'Alonzo J, Tocque B, Jaye M, Ivashchenko Y (April 1998). "hUBC9 associates with MEKK1 and type I TNF-alpha receptor and stimulates NFkappaB activity". FEBS Lett. 425 (3): 431–5. doi:10.1016/s0014-5793(98)00287-7. PMID 9563508. 
  16. ^ Xu W, Gong L, Haddad MM, Bischof O, Campisi J, Yeh ET, Medrano EE (March 2000). "Regulation of microphthalmia-associated transcription factor MITF protein levels by association with the ubiquitin-conjugating enzyme hUBC9". Exp. Cell Res. 255 (2): 135–43. doi:10.1006/excr.2000.4803. PMID 10694430. 
  17. ^ a b c Shen Z, Pardington-Purtymun PE, Comeaux JC, Moyzis RK, Chen DJ (October 1996). "Associations of UBE2I with RAD52, UBL1, p53, and RAD51 proteins in a yeast two-hybrid system". Genomics 37 (2): 183–6. doi:10.1006/geno.1996.0540. PMID 8921390. 
  18. ^ a b Minty A, Dumont X, Kaghad M, Caput D (November 2000). "Covalent modification of p73alpha by SUMO-1. Two-hybrid screening with p73 identifies novel SUMO-1-interacting proteins and a SUMO-1 interaction motif". J. Biol. Chem. 275 (46): 36316–23. doi:10.1074/jbc.M004293200. PMID 10961991. 
  19. ^ Gallagher WM, Argentini M, Sierra V, Bracco L, Debussche L, Conseiller E (June 1999). "MBP1: a novel mutant p53-specific protein partner with oncogenic properties". Oncogene 18 (24): 3608–16. doi:10.1038/sj.onc.1202937. PMID 10380882. 
  20. ^ Bernier-Villamor V, Sampson DA, Matunis MJ, Lima CD (February 2002). "Structural basis for E2-mediated SUMO conjugation revealed by a complex between ubiquitin-conjugating enzyme Ubc9 and RanGAP1". Cell 108 (3): 345–56. doi:10.1016/s0092-8674(02)00630-x. PMID 11853669. 
  21. ^ a b Lee BH, Yoshimatsu K, Maeda A, Ochiai K, Morimatsu M, Araki K, Ogino M, Morikawa S, Arikawa J (Dec 2003). "Association of the nucleocapsid protein of the Seoul and Hantaan hantaviruses with small ubiquitin-like modifier-1-related molecules". Virus Res. 98 (1): 83–91. doi:10.1016/j.virusres.2003.09.001. PMID 14609633. 
  22. ^ Sapetschnig A, Rischitor G, Braun H, Doll A, Schergaut M, Melchior F, Suske G (October 2002). "Transcription factor Sp3 is silenced through SUMO modification by PIAS1". EMBO J. 21 (19): 5206–15. doi:10.1093/emboj/cdf510. PMC 129032. PMID 12356736. 
  23. ^ Kahyo T, Nishida T, Yasuda H (September 2001). "Involvement of PIAS1 in the sumoylation of tumor suppressor p53". Mol. Cell 8 (3): 713–8. doi:10.1016/s1097-2765(01)00349-5. PMID 11583632. 
  24. ^ Kovalenko OV, Plug AW, Haaf T, Gonda DK, Ashley T, Ward DC, Radding CM, Golub EI (April 1996). "Mammalian ubiquitin-conjugating enzyme Ubc9 interacts with Rad51 recombination protein and localizes in synaptonemal complexes". Proc. Natl. Acad. Sci. U.S.A. 93 (7): 2958–63. doi:10.1073/pnas.93.7.2958. PMC 39742. PMID 8610150. 
  25. ^ a b c d Ewing RM, Chu P, Elisma F, Li H, Taylor P, Climie S, McBroom-Cerajewski L, Robinson MD, O'Connor L, Li M, Taylor R, Dharsee M, Ho Y, Heilbut A, Moore L, Zhang S, Ornatsky O, Bukhman YV, Ethier M, Sheng Y, Vasilescu J, Abu-Farha M, Lambert JP, Duewel HS, Stewart II, Kuehl B, Hogue K, Colwill K, Gladwish K, Muskat B, Kinach R, Adams SL, Moran MF, Morin GB, Topaloglou T, Figeys D. "Large-scale mapping of human protein-protein interactions by mass spectrometry". Mol. Syst. Biol. 3: 89. doi:10.1038/msb4100134. PMC 1847948. PMID 17353931. 
  26. ^ Zhang H, Saitoh H, Matunis MJ (September 2002). "Enzymes of the SUMO modification pathway localize to filaments of the nuclear pore complex". Mol. Cell. Biol. 22 (18): 6498–508. doi:10.1128/mcb.22.18.6498-6508.2002. PMC 135644. PMID 12192048. 
  27. ^ a b Tatham MH, Kim S, Yu B, Jaffray E, Song J, Zheng J, Rodriguez MS, Hay RT, Chen Y (August 2003). "Role of an N-terminal site of Ubc9 in SUMO-1, -2, and -3 binding and conjugation". Biochemistry 42 (33): 9959–69. doi:10.1021/bi0345283. PMID 12924945. 
  28. ^ Netzer C, Bohlander SK, Rieger L, Müller S, Kohlhase J (August 2002). "Interaction of the developmental regulator SALL1 with UBE2I and SUMO-1". Biochem. Biophys. Res. Commun. 296 (4): 870–6. doi:10.1016/s0006-291x(02)02003-x. PMID 12200128. 
  29. ^ Huggins GS, Chin MT, Sibinga NE, Lee SL, Haber E, Lee ME (October 1999). "Characterization of the mUBC9-binding sites required for E2A protein degradation". J. Biol. Chem. 274 (40): 28690–6. doi:10.1074/jbc.274.40.28690. PMID 10497239. 
  30. ^ Mao Y, Sun M, Desai SD, Liu LF (April 2000). "SUMO-1 conjugation to topoisomerase I: A possible repair response to topoisomerase-mediated DNA damage". Proc. Natl. Acad. Sci. U.S.A. 97 (8): 4046–51. doi:10.1073/pnas.080536597. PMC 18143. PMID 10759568. 
  31. ^ Wang ZY, Qiu QQ, Seufert W, Taguchi T, Testa JR, Whitmore SA, Callen DF, Welsh D, Shenk T, Deuel TF (October 1996). "Molecular cloning of the cDNA and chromosome localization of the gene for human ubiquitin-conjugating enzyme 9". J. Biol. Chem. 271 (40): 24811–6. doi:10.1074/jbc.271.40.24811. PMID 8798754.