(2S)-2-amino-3-butenoate + H2O => 2-oxobutanoate + NH4(+)
(2s)-2-amino-3-butenoate + h2o => 2-oxobutanoate + nh4(+)
(2S)-2-amino-3-butenoate + H2O => 2-oxobutanoate + NH4(+)
(2s)-2-amino-3-butenoate + h2o => 2-oxobutanoate + nh4(+)