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Picosecond measurements of the primary photochemical events in reaction centers isolated from the facultative green photosynthetic bacterium Chloroflexus aurantiacus
Author(s) -
Kirmaier Christine,
Holten Dewey,
Feick Reiner,
Blankenship Robert E.
Publication year - 1983
Publication title -
febs letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.593
H-Index - 257
eISSN - 1873-3468
pISSN - 0014-5793
DOI - 10.1016/0014-5793(83)80679-6
Subject(s) - photosynthetic reaction centre , bacteriochlorophyll , photochemistry , purple bacteria , rhodospirillaceae , chemistry , rhodobacter sphaeroides , picosecond , electron acceptor , rhodospirillales , ultrafast laser spectroscopy , photosynthesis , electron transfer , biochemistry , spectroscopy , laser , physics , quantum mechanics , optics
The primary charge separation process in reaction centers isolated from the green photosynthetic bacterium Chloroflexus aurantiacus has been investigated with picosecond transient absorption techniques. Transient spectra and kinetics are compared with those obtained under identical conditions on reaction centers from the purple bacterium Rhodopseudomonas sphaeroides . An early electron acceptor complex in both organisms appears to involve interacting bacteriopheophytin‐ a and bacteriochlorophyll‐ a molecules. However, there are significant spectral and kinetic differences in the two reaction center preparations.