title: An infrared spectroscopic study on the secondary structure of the black-eyed pea trypsin and chymotrypsin inhibitor--amide I-III and V bands.
abstract: The infrared spectrum of native black-eyed pea trypsin and chymotrypsin inhibitor (BTCI) in solid film was measured from 550 to 1750 cm-1 and amide I-III, and V regions have been analyzed. By comparison between the observed bands with the modes calculated for several structures (available in the literature), the occurrence in BTCI of unordered, antipatallel beta-sheet, and beta-turn structures is suggested.
mesh_terms: D007887:Fabaceae; D010946:Plants, Medicinal; D011487:Protein Conformation; D013055:Spectrophotometry, Infrared; D014361:Trypsin Inhibitors / Q000032:analysis*; D000514:alpha 1-Antichymotrypsin / Q000032:analysis*
chemical_list: D014361:Trypsin Inhibitors; D000514:alpha 1-Antichymotrypsin