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Ubiquitin-conjugating enzyme E2, catalytic (UBCc) domain of ubiquitin-conjugating enzyme E2 C and related proteins The E2C family includes mammalian ubiquitin-conjugating enzyme E2 C (UBE2C/UBCH10), yeast E2 ubiquitin-conjugating enzyme 11 (UBC11), plant ubiquitin-conjugating enzyme E2 19 (UBC19) and 20 (UBC20). They are ubiquitin-conjugating enzymes (EC 2.3.2.23) that accept ubiquitin from the E1 complex and catalyze the covalent attachment to other proteins. UBE2C, also known as (E3-independent) E2 ubiquitin-conjugating enzyme C (EC 2.3.2.24), E2 ubiquitin-conjugating enzyme C, ubiquitin carrier protein C, or ubiquitin-protein ligase C, catalyzes 'Lys-11'- and 'Lys-48'-linked polyubiquitination in vitro. It is a ubiquitin carrier protein required for the destruction of mitotic cyclins and proteins that maintain sister chromatid cohesion in animal cells and in Schizosaccharomyces pombe. In Saccharomyces cerevisiae, UBC11 is not essential for mitotic cyclin destruction. Arabidopsis thaliana UBC19 is part of the anaphase-promoting complex (APC). It may have a key function during cell cycle and be involved in cyclin B1 degradation. |
Jiyao W et al.(2023). "The conserved domain database in 2023.",