mesaconate + NH4(+) => (2S,3R)-3-methyl-L-aspartate
mesaconate + nh4(+) => (2s,3r)-3-methyl-l-aspartate
mesaconate + NH4(+) => (2S,3R)-3-methyl-L-aspartate
mesaconate + nh4(+) => (2s,3r)-3-methyl-l-aspartate