Glutamyl-Taurine Is the Predominant Synaptic Taurine Peptide

Abstract
Several taurine-containing peptides were identified from trichloracetic acid extracts of synaptosomes and their subcellular vesicles prepared from calf brain. These peptides contain aspartic and glutamic acids, serine and taurine and are often present in an N-acetylated form. The peptides were isolated as single spots by TLC. Glutamyltaurine was the predominant structure when analyzed by fast atom bombardment (FAB) mass spectrometry.