Crystal and molecular structure of cyclo(L-prolyl-glycyl)3. A cyclic hexapeptide with a cis peptide bond.
Kartha G, Aimoto S, Varughese KI. Crystal and molecular structure of cyclo(L-prolyl-glycyl)3. A cyclic hexapeptide with a cis peptide bond. Int J Pept Protein Res. 1986 Feb; 27(2):112-7.