NP_003336.1
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NCBI GenBank Nucleotide #
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UniProt Secondary Accession #
UniProt Related Accession #
Molecular Weight
18,007 Da
NCBI Official Full Name
SUMO-conjugating enzyme UBC9
NCBI Official Synonym Full Names
ubiquitin conjugating enzyme E2 I
NCBI Protein Information
SUMO-conjugating enzyme UBC9
UniProt Protein Name
SUMO-conjugating enzyme UBC9
UniProt Synonym Protein Names
SUMO-protein ligase; Ubiquitin carrier protein 9; Ubiquitin carrier protein I; Ubiquitin-conjugating enzyme E2 I; Ubiquitin-protein ligase I; p18
UniProt Synonym Gene Names
UniProt Entry Name
UBC9_HUMAN
NCBI Summary for UBE2I
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. [provided by RefSeq, Jul 2008]
UniProt Comments for UBE2I
UBC9: Accepts the ubiquitin-like proteins SUMO1, SUMO2, SUMO3 and SUMO4 from the UBLE1A-UBLE1B E1 complex and catalyzes their covalent attachment to other proteins with the help of an E3 ligase such as RANBP2 or CBX4. Can catalyze the formation of poly- SUMO chains. Necessary for sumoylation of FOXL2 and KAT5. Essential for nuclear architecture and chromosome segregation. Interacts with HIPK1, HIPK2, PPM1J, RASD2 and TCF3 Interacts with NR2C1; the interaction promotes its sumoylation. Forms a tight complex with RANGAP1 and RANBP2. Interacts with SIAH1 and PARP. Interacts with various transcription factors such as TFAP2A, TFAP2B, TFAP2C, AR, ETS1 and SOX4. Interacts with RWDD3; the interaction enhances the sumoylation of a number of proteins such as HIF1A and I-kappa-B. Interacts with DNMT1. Interacts with FOXL2. Forms a complex with SENP6 and UBE2I in response to UV irradiation. Interacts with human herpesvirus 6 IE2. Interacts with human adenovirus early E1A protein; this interaction interferes with polysumoylation (Probable). Interacts with DNM1l (via its GTPase and B domains); the interaction promotes sumoylation of DNM1L, mainly in its B domain. Interacts with PML-RARA oncoprotein (via the coiled-colied domain); the interaction is required for sumoylation of the PML- RARA oncoprotein. Interacts with IPO13. Interacts with NFATC2IP; this inhibits formation of poly-SUMO chains. Expressed in heart, skeletal muscle, pancreas, kidney, liver, lung, placenta and brain. Also expressed in testis and thymus. Belongs to the ubiquitin-conjugating enzyme family.
Protein type: SUMO conjugating system; Ubiquitin ligase; EC 6.3.2.19; Ligase; EC 6.3.2.-; Ubiquitin conjugating system; Nuclear receptor co-regulator
Chromosomal Location of Human Ortholog: 16p13.3
Cellular Component: cytoplasm; cytosol; nuclear envelope; nucleoplasm; nucleus; PML body; synaptonemal complex
Molecular Function: ATP binding; enzyme binding; HLH domain binding; ligase activity; protein binding; SUMO ligase activity; transcription factor binding; ubiquitin protein ligase binding
Biological Process: cell division; chromosome segregation; mitosis; negative regulation of transcription from RNA polymerase II promoter; negative regulation of transcription, DNA-dependent; positive regulation of I-kappaB kinase/NF-kappaB cascade; protein modification process; protein sumoylation; ubiquitin-dependent protein catabolic process; viral reproduction
Research Articles on UBE2I
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Products associated with UBE2I blocking peptide
Pathways associated with UBE2I blocking peptide
Diseases associated with UBE2I blocking peptide
Organs/Tissues associated with UBE2I blocking peptide
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