Hemerythrin's oxygen-binding reaction studied by laser photolysis.

N. Alberding, D. Lavalette, R. H. Austin

Research output: Contribution to journalArticlepeer-review

13 Scopus citations

Abstract

The dioxygen--iron bond in oxyhemerythrin is shown to be photosensitive. The recombination reaction after photodissociation depends strongly on solvent viscosity. In water (eta = 1 centipoise or 1 x 10(-3) Pa . s) the recombination is monophasic and second-order in solvent oxygen concentration, with a bimolecular rate coefficient of 2.9 x 10(7) M-1 s-1. In a glycerol/water mixture (eta = 180 centipoise) a concentration-dependent geminate recombination process is also seen. This opens a class of proteins to study by flash photolysis.

Original languageEnglish (US)
Pages (from-to)2307-2309
Number of pages3
JournalProceedings of the National Academy of Sciences of the United States of America
Volume78
Issue number4
DOIs
StatePublished - Apr 1981

All Science Journal Classification (ASJC) codes

  • General

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