A new glycine containing compound with a blocked amino group from uremic body fluids.

A new compound was isolated from ultrafiltrate of uremic plasma. It was characterized by amino acid analysis, partial acid hydrolysis, studies of terminal groups, and electrophoretic and isotachophoretic properties. The results show that it contains three functional groups, an acidic moiety sensitive to removal by acid hydrolysis, glycine in possible oligopeptide linkage, and a remaining intermediate-sized acyl group.