Recombinant Human Ubiquitin-conjugating enzyme E2 K (UBE2K)

Uniprot Id

P61086

Target Species

Human

Target Name

UBE2K

Target Full Name

Ubiquitin-conjugating enzyme E2 K

Target Function

Accepts ubiquitin from the E1 complex and catalyzes its covalent attachment to other proteins. In vitro, in the presence or in the absence of BRCA1-BARD1 E3 ubiquitin-protein ligase complex, catalyzes the synthesis of 'Lys-48'-linked polyubiquitin chains. Does not transfer ubiquitin directly to but elongates monoubiquitinated substrate protein. Mediates the selective degradation of short-lived and abnormal proteins, such as the endoplasmic reticulum-associated degradation (ERAD) of misfolded lumenal proteins. Ubiquitinates huntingtin. May mediate foam cell formation by the suppression of apoptosis of lipid-bearing macrophages through ubiquitination and subsequence degradation of p53/TP53. Proposed to be involved in ubiquitination and proteolytic processing of NF-kappa-B; in vitro supports ubiquitination of NFKB1. In case of infection by cytomegaloviruses may be involved in the US11-dependent degradation of MHC class I heavy chains following their export from the ER to the cytosol. In case of viral infections may be involved in the HPV E7 protein-dependent degradation of RB1.

Target Subcellular Location

Cytoplasm.

Target Protein Families

Ubiquitin-conjugating enzyme family

Target Tissue Specificity

Expressed in all tissues tested, including spleen, thymus, prostate, testis, ovary, small intestine, colon, peripheral blood leukocytes, T-lymphocytes, monocytes, granulocytes and bone marrow mononuclear cells. Highly expressed in brain, with highest leve

Target Research Area

Neuroscience

Target Synonyms

E2 25K; E2(25K); HIP-2; Huntingtin interacting protein 2; Huntingtin-interacting protein 2; HYPG; LIG; UBC1; UBE2K; UBE2K_HUMAN; Ubiquitin carrier protein; Ubiquitin conjugating enzyme E2 25 kDa; ubiquitin conjugating enzyme E2K; ubiquitin conjugating enzyme E2K (UBC1 homolog, yeast); Ubiquitin protein ligase; Ubiquitin-conjugating enzyme E2 K; Ubiquitin-conjugating enzyme E2(25K); Ubiquitin-conjugating enzyme E2-25 kDa; Ubiquitin-conjugating enzyme E2-25K; Ubiquitin-protein ligase

Target Background

The protein encoded by this gene belongs to the ubiquitin-conjugating enzyme family. This protein interacts with RING finger proteins, and it can ubiquitinate huntingtin, the gene product for Huntington's disease. Known functions for this protein include a role in aggregate formation of expanded polyglutamine proteins and the suppression of apoptosis in polyglutamine diseases, a role in the dislocation of newly synthesized MHC class I heavy chains from the endoplasmic reticulum, and involvement in foam cell formation. Multiple transcript variants encoding different isoforms have been identified for this gene.