This novel enzyme is distinct from E6-AP , the p53 -conjugating ligase , and from E3 alpha , the "N-end rule" ligase .
this novel enzyme is distinct from e6-ap , the p53 -conjugating ligase , and from e3 alpha , the "n-end rule" ligase .
O O O O O O B-protein_molecule O O B-protein_subunit O O O O O B-protein_molecule O O O B-protein_molecule I-protein_molecule I-protein_molecule O