Premium
SENSITIZATION OF PHOTOREACTIONS IN EIMHJELLEN'S RHODOPSEUDOMONAS BY A PIGMENT ABSORBING AT 830 mμ *
Author(s) -
Olson John M.,
Clayton Roderick K.
Publication year - 1966
Publication title -
photochemistry and photobiology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.818
H-Index - 131
eISSN - 1751-1097
pISSN - 0031-8655
DOI - 10.1111/j.1751-1097.1966.tb05811.x
Subject(s) - action spectrum , pigment , photochemistry , fluorescence , photosynthetic reaction centre , bacteriochlorophyll , chemistry , cytochrome , absorption spectroscopy , absorption (acoustics) , cytochrome c , biochemistry , physics , organic chemistry , electron transfer , optics , mitochondrion , enzyme
— The excitation spectrum for bacteriochlorophyll b fluorescence, the action spectrum for cytochrome‐553 oxidation, and the action spectrum for P‐985 bleaching are compared to the absorption (1‐T) spectrum of a Rhodopseudomonas sp. NHTC 133 extract over the range 770 to 930 mμ. These spectra show that a minor pigment P‐830 is more effective in sensitizing cytochrome oxidation and P‐985 bleaching than in exciting fluorescence of Bchl b . These results are consistent with the proposal that P‐830 is a form of Bchl b in special relation to the reaction center pigment P‐985.