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The mechanism of primary photochemistry has been investigated in purified cytoplasmic membranes and isolated reaction centers of Chloroflexus aurantiacus. Redox titrations on the cytoplasmic membranes indicate that the midpoint redox potential of P870, the primary electron donor bacteriochlorophyll, is +362 mV. An early electron acceptor, presumably menaquinone has Em 8.1 = -50 mV, and a tightly bound photooxidizable cytochrome c554 has Em 8.1 = +245 mV. The isolated reaction center has a bacteriochlorophyll to bacteriopheophytin ratio of 0.94:1. A two-quinone acceptor system is present, and is inhibited by o-phenanthroline. Picosecond transient absorption and kinetic measurements indicate the bacteriopheophytin and bacteriochlorophyll form an earlier electron acceptor complex.
R E Blankenship, and
R Feick, and
B D Bruce, and
C Kirmaier, and
D Holten, and
R C Fuller
November 1982,
Proceedings of the National Academy of Sciences of the United States of America,
R E Blankenship, and
R Feick, and
B D Bruce, and
C Kirmaier, and
D Holten, and
R C Fuller
December 1991,
Biochemistry,
R E Blankenship, and
R Feick, and
B D Bruce, and
C Kirmaier, and
D Holten, and
R C Fuller
February 1996,
The Journal of physical chemistry,
R E Blankenship, and
R Feick, and
B D Bruce, and
C Kirmaier, and
D Holten, and
R C Fuller
May 2023,
Biochemistry. Biokhimiia,
R E Blankenship, and
R Feick, and
B D Bruce, and
C Kirmaier, and
D Holten, and
R C Fuller
July 1984,
Journal of bacteriology,
R E Blankenship, and
R Feick, and
B D Bruce, and
C Kirmaier, and
D Holten, and
R C Fuller
January 2020,
Scientific reports,
R E Blankenship, and
R Feick, and
B D Bruce, and
C Kirmaier, and
D Holten, and
R C Fuller
January 1986,
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R E Blankenship, and
R Feick, and
B D Bruce, and
C Kirmaier, and
D Holten, and
R C Fuller
September 1991,
FEBS letters,
R E Blankenship, and
R Feick, and
B D Bruce, and
C Kirmaier, and
D Holten, and
R C Fuller
May 1975,
Journal of bacteriology,
R E Blankenship, and
R Feick, and
B D Bruce, and
C Kirmaier, and
D Holten, and
R C Fuller
May 2019,
Physiologia plantarum,
