Activation energy spectrum of a biomolecule: Photodissociation of carbonmonoxy myoglobin at low temperatures

R. H. Austin, K. Beeson, L. Eisenstein, H. Frauenfelder, I. C. Gunsalus, V. P. Marshall

Research output: Contribution to journalArticle

102 Scopus citations

Abstract

Carbon monoxide bound to myoglobin can be photodissociated with high quantum yield. The subsequent rebinding can be followed optically. In the temperature range between 40 and 200 K, rebinding can be described by a function of the form t0, where n and H(t)=(1+tt0)-n are temperature-dependent parameters. This behavior can be explained by assuming the existence of an activation-energy spectrum; the form of this spectrum is determined. The energy spectrum may be due to the existence of myoglobin conformers.

Original languageEnglish (US)
Pages (from-to)403-405
Number of pages3
JournalPhysical review letters
Volume32
Issue number8
DOIs
StatePublished - Jan 1 1974
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy(all)

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