(S)-2,3-diaminopropanoate + fumarate + ATP = N(3)-fumaroyl-(S)-2,3-diaminopropanoate + AMP + diphosphate
(s)-2,3-diaminopropanoate + fumarate + atp = n(3)-fumaroyl-(s)-2,3-diaminopropanoate + amp + diphosphate
(S)-2,3-diaminopropanoate + fumarate + ATP = N(3)-fumaroyl-(S)-2,3-diaminopropanoate + AMP + diphosphate
(s)-2,3-diaminopropanoate + fumarate + atp = n(3)-fumaroyl-(s)-2,3-diaminopropanoate + amp + diphosphate