title: Carbon 13 as a probe of helix formation in semisynthetic ribonuclease-S'.
mesh_terms: D000409:Alanine; D000595:Amino Acid Sequence; D000596:Amino Acids / Q000032:analysis; D002247:Carbon Isotopes; D055598:Chemical Phenomena; D002621:Chemistry; D002850:Chromatography, Gel; D005998:Glycine; D007553:Isotope Labeling; D009682:Magnetic Resonance Spectroscopy; D011487:Protein Conformation; D012260:Ribonucleases / Q000032:analysis / Q000138:chemical synthesis / Q000302:isolation & purification / Q000378:metabolism*
chemical_list: D000596:Amino Acids; D002247:Carbon Isotopes; D012260:Ribonucleases; D000409:Alanine; D005998:Glycine