Initial electron transfer in photosynthetic reaction centers of Rhodobacter capsulatus mutants

Chi Kin Chan*, Lin X-Q Chen, Theodore J. DiMagno, Deborah K. Hanson, Sharron L. Nance, Marianne Schiffer, James R. Norris, Graham R. Fleming

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

80 Scopus citations

Abstract

The stimulated emission decay time constants were measured for a series of Rhodobacter capsulatus reaction centers with site-specific mutations at the symmetry related locations M208 and L181. We report the first mutant (PheL181 → Tyr) that exhibits an initial electron transfer rate faster than the native organism at 295 K, and determine that the tyrosine at position M208 cannot be fully responsible for the unidirectionality of electron transfer.

Original languageEnglish (US)
Pages (from-to)366-372
Number of pages7
JournalChemical Physics Letters
Volume176
Issue number3-4
DOIs
StatePublished - Jan 18 1991

ASJC Scopus subject areas

  • Physics and Astronomy(all)
  • Physical and Theoretical Chemistry

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