Serine transhydroxymethylase activity in vertebrate retina.

The presence of serine transhydroxymethylase (STHM; EC 2.1.2.

Action of oxotremorine on the sub-cellular distribution of glycine in the rat spinal cord.

Intraperitoneal (i.p.) injection of 250 micrograms/kg of oxotremorine (OT) caused a 50% decrease in the glycine content of the synaptosomal-mitochondrial fraction of spinal cord homogenates prepared from rats killed 15 min after treatment.

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.