Investigation of the triplet state of flavines and flavoproteins by optical detection of magnetic resonance

Thomas A. Moore, Alvin L. Kwiram

Research output: Contribution to journalArticlepeer-review

12 Scopus citations

Abstract

The magnetic sublevels of the lowest excited triplet state of riboflavine, deazaflavine, FMN, FAD, and alloxazine, as well as two flavoproteins have been investigated by optical detection of magnetic resonance. Lifetimes, relative steady-state populations, relative radiative rate constants, as well as zero-field splitting parameters are reported for riboflavine and deazaflavine. This double resonance technique has been used to observe and characterize phosphorescence from flavodoxin and yeast hemoglobin and is shown to be a powerful technique for investigating the triplet electronic structure of weakly luminescent biological systems.

Original languageEnglish (US)
Pages (from-to)5403-5407
Number of pages5
JournalBiochemistry
Volume13
Issue number26
DOIs
StatePublished - Dec 1 1974
Externally publishedYes

ASJC Scopus subject areas

  • Biochemistry

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