ID 6.3.2.23 DE homoglutathione synthase. AN beta-alanine specific hGSH synthetase. AN homoglutathione synthetase. CA ATP + beta-alanine + gamma-L-glutamyl-L-cysteine = ADP + gamma-L- CA glutamyl-L-cysteinyl-beta-alanine + H(+) + phosphate. CC -!- Not identical with EC 6.3.2.3. //