Hole burning and pressure phenomena in chromoproteins

J. Gafert, J. Friedrich, F. Parak, J. Fidy

Research output: Contribution to journalArticlepeer-review

3 Scopus citations

Abstract

We investigated the behavior of spectral holes under pressure at various frequencies within the inhomogeneous band for two proteins, namely myoglobin and horseradish peroxidase. In order to achieve narrow bandwidth hole burning, the heme chromophore was replaced by protoporphyrin IX and mesoporphyrin IX, respectively. In myoglobin, we found that the pressure induced shift of the holes varied in a strongly non-linear fashion, when the burn-frequency was tuned across the absorption band. In horseradish peroxidase the pressure shift was linear with burn-frequency but changed in a dramatic fashion upon complex formation with a substrate molecule. These observations are interpreted within the frame of the so-called correlated phase space model.

Original languageEnglish
Pages (from-to)157-164
Number of pages8
JournalJournal of Luminescence
Volume56
Issue number1-6
DOIs
StatePublished - Oct 1993
Externally publishedYes

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