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Semiflexibility of collagens in solution
Author(s) -
Saito Takahide,
Iso Naomichi,
Mizuno Haruo,
Onda Nobuhiko,
Yamato Hideyuki,
Odashima Hiroshi
Publication year - 1982
Publication title -
biopolymers
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.556
H-Index - 125
eISSN - 1097-0282
pISSN - 0006-3525
DOI - 10.1002/bip.360210402
Subject(s) - chemistry , persistence length , cuticle (hair) , persistence (discontinuity) , salt (chemistry) , acetic acid , viscosity , biophysics , chromatography , biochemistry , anatomy , molecule , organic chemistry , composite material , medicine , materials science , geotechnical engineering , biology , engineering
The persistence length of lugworm cuticle collagen in 0.1 M acetic acid was evaluated as 1600 ∼ 1800 Å by Yamakawa‐Fujii's model for a wormlike chain from the sedimentation constant and the intrinsic viscosity. The persistence length was further examined for a series of sample “collagen sonicates” produced by varying the duration of sonic irradiation. To estimate the salt effect on the persistence length, measurements were made over a range of NaCl concentrations from 0 to 0.1 M . The results showed that the cuticle collagen and collagen sonicates had identical values of persistence length and that the neutral salt effect for the cuticle collagen was far smaller than that for DNA.