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Optical anisotropy of oriented deoxyribonucleic acid films of different water content
Author(s) -
Wetzel H.,
Zirwer D.,
Becker M.
Publication year - 1969
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.1969.360080309
Subject(s) - chemistry , dna , circular dichroism , hysteresis , anisotropy , helix (gastropod) , relative humidity , dichroism , absorption (acoustics) , ultraviolet , crystallography , nucleic acid , optics , biochemistry , thermodynamics , condensed matter physics , ecology , physics , snail , biology
Ultraviolet absorption and dichroism measurements on oriented films of calf thymus deoxyribonucleic acid (DNA) at varying degrees of hydration show a structural hysteresis which occurs within a relative humidity of 0 to 65% RH. This hysteresis is interpreted on the basis of a model which assumes the existence of structure‐stabilizing hydrogen water bridges in the DNA double helix.