title: The use of 13 C n.m.r. (c.m.r.) spectroscopy in biosynthetic studies of - lactam antibiotics. I. The incorporation of (1- 13 C)- and (2- 13 C) sodium acetate, and DL-(1- 13 C)- and DL-(2- 13 C) valine into cephalosporin C.
mesh_terms: D000085:Acetates / Q000378:metabolism*; D000164:Acremonium / Q000378:metabolism; D000272:Adipates / Q000138:chemical synthesis; D000577:Amides / Q000138:chemical synthesis; D002247:Carbon Isotopes; D002511:Cephalosporins / Q000096:biosynthesis*; D003470:Culture Media; D005285:Fermentation; D006863:Hydrogen-Ion Concentration; D009682:Magnetic Resonance Spectroscopy; D014633:Valine / Q000378:metabolism*
chemical_list: D000085:Acetates; D000272:Adipates; D000577:Amides; D002247:Carbon Isotopes; D002511:Cephalosporins; D003470:Culture Media; D014633:Valine