title: ON THE ROLE OF "CYCLIC CYSTEINYLVALINE" IN PENICILLIN BIOSYNTHESIS.
mesh_terms: D003545:Cysteine; D008660:Metabolism; D010406:Penicillins; D010407:Penicillium; D012106:Research; D014633:Valine
chemical_list: D010406:Penicillins; D014633:Valine; D003545:Cysteine
keywords: CYSTEINE; EXPERIMENTAL LAB STUDY; METABOLISM; PENICILLIN; PENICILLIUM; VALINE