title: X-ray diffraction and infrared studies of an  -helical fragment from  -keratin.
mesh_terms: D000818:Animals; D002850:Chromatography, Gel; D007259:Infrared Rays; D007633:Keratins; D011487:Protein Conformation; D012756:Sheep; D013057:Spectrum Analysis; D014935:Wool; D014961:X-Ray Diffraction
chemical_list: D007633:Keratins