Catalytic activity:ATP + ubiquitin + protein lysine = AMP + diphosphate + protein N-ubiquityllysine.,Function:Catalyzes the covalent attachment of ubiquitin to other proteins. May be involved in degradation of katenin.,pathway:Protein modification; protein ubiquitination.,similarity:Belongs to the ubiquitin-conjugating enzyme family.,subunit:When phosphorylated, interacts with beta-TrCP (BTRC).,
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