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Vector Laboratories, Inc.
6737 Mowry Ave
Newark, CA 94560
United States
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UBE2K / LIG
ubiquitin-conjugating enzyme E2K
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.
| Gene Name: | ubiquitin-conjugating enzyme E2K |
| Synonyms: | UBE2K, E2-25K, E2(25K), HIP2, HYPG, LIG, UBC1, Ubiquitin-protein ligase, HIP-2, Ubiquitin carrier protein |
| Target Sequences: | NM_005339 NP_005330.1 P61086 |
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