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A resonance Raman study of the temperature dependence of ligand photolysis and recombination in hemoglobins

✍ Scribed by M.R. Ondrias; T.W. Scott; J.M. Friedman; V.W. Macdonald

Publisher: Elsevier Science
Year: 1984
Tongue: English
Weight: 465 KB
Volume: 112
Category: Article
ISSN: 0009-2614
DOI: 10.1016/0009-2614(84)85756-5

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✦ Synopsis

Transient Raman spekroscopy has been used to study geminate recombination in photolyzed hemoglobins at cryogenic temperatures_ The temperature dependence of the deoxy heme survival probability during a 10 ns photolysis event is analyzed in terms of a distribution of energy barriers. Studies employing different ligamis (CO, Oz. NO), and a mutant hemoglobin (hemoglobin Zurich) demonstrates that the barriers controlling rebindii at early times are both ligand and protein specific.

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