4.3.2.1 argininosuccinate lyase; arginosuccinase; argininosuccinic acid lyase; arginine-succinate lyase; N-(L-argininosuccinate) arginine-lyase; omega-N-(L-arginino)succinate arginine-lyase; 2-(omega-N-L-arginino)succinate arginine-lyase (fumarate-forming)