This enzyme belongs to the family of oxidoreductases, specifically those acting on the CH-NH group of donor with NAD+ or NADP+ as acceptor. The systematic name of this enzyme class is N-(carboxymethyl)-D-alanine:NAD+ oxidoreductase (glycine-forming). Other names in common use include strombine[N-(carboxymethyl)-D-alanine]dehydrogenase, and N-(carboxymethyl)-D-alanine: NAD+ oxidoreductase.
References
Dando PR (1981). "Strombine [N-(carboxymethyl)-D-alanine] dehydrogenase and alanopine [meso-N-(1-carboxyethyl)-alanine dehydrogenase from the mussel Mytilus edulis L". Biochem. Soc. Trans. 9: 297–298.