ID 6.3.2.n3 DE ISG15--protein ligase. AN ISG15-conjugating enzyme. CA ATP + [ISG15] + [protein]-lysine = AMP + diphosphate + [protein]-N- CA ISGyllysine. CC -!- The enzyme from human also functions as EC 2.3.2.27. DR Q14258, TRI25_HUMAN; Q61510, TRI25_MOUSE; //