Glyoxylate aminotransferase activity in vertebrate retina

Glyoxylate aminotransferase activity with L-glutamate, L-glutamine and L-alanine as substrates, has been estimated in rat, guinea pig and goat retinae. Enhanced enzyme activity was found in the presence of Triton X-100. The presence of significant aminotransferase activity raises a possibility of glyoxylate as a precursor of glycine in vertebrate retina.