title: [Optical rotatory dispersion and circular dichroism of enzyme- and alkali-dissolved collagen].
abstract: Viscosity, dispersion of optical rotation and circular dichroism of collagen solutions was determined. Collagen solutions were obtained after treating collagen with enzymes--protorizine or prototerrizine, or with the mixture of 2,5 M NaOH--1 M Na2SO4 and acid-soluble collagen from calf skin. Molecules of "forcedly" solved collagen have an asymmetric shape with a conformation of a three-helical helix. After being heated the latter undergoes the transformation helix-coil similar to tropocollagen molecules.
mesh_terms: D001230:Aspergillus / Q000201:enzymology; D002942:Circular Dichroism; D003094:Collagen / Q000032:analysis*; D010450:Endopeptidases; D009905:Optical Rotatory Dispersion; D011487:Protein Conformation; D012972:Sodium Hydroxide; D012996:Solutions; D013431:Sulfates
chemical_list: D012996:Solutions; D013431:Sulfates; D012972:Sodium Hydroxide; D003094:Collagen; D010450:Endopeptidases
vernacular_title: Dispersiia opticheskog vrashcheniia i krugovoĭ dikhroizm fermento- i shchelochnorastvorennogo kollagena