ENCODES a protein that exhibits (S)-2-(5-amino-1-(5-phospho-D-ribosyl)imidazole-4-carboxamido) succinate lyase (fumarate-forming) activity; identical protein binding; N6-(1,2-dicarboxyethyl)AMP AMP-lyase (fumarate-forming) activity; INVOLVED IN aerobic respiration; AMP biosynthetic process; response