Enables glutathione synthase activity. Acts upstream of or within response to cadmium ion. Predicted to be active in cytosol. Is expressed in several structures, including alimentary system; integumental system; metanephros; nervous system; and sensory organ. Human ortholog(s) of this gene implicated in Alzheimer's disease; glutathione synthetase deficiency; and hemolytic anemia due to glutathione synthetase deficiency. Orthologous to human GSS (glutathione synthetase). [provided by Alliance of Genome Resources, Apr 2022]