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THE ASSOCIATION AND ACTIVITIES OF PTERIDINES IN PHOTOSYNTHETIC SYSTEMS * , †
Author(s) -
FULLER R. C.,
KIDDER G. W.,
NUGENT N. A.,
DEWEY V. C.,
RIGOPOULOS N.
Publication year - 1971
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.1751-1097.1971.tb06179.x
Subject(s) - pteridine , photosynthesis , rhodospirillum rubrum , pigment , bacteriochlorophyll , photochemistry , chemistry , electron transport chain , chromatophore , photosynthetic reaction centre , absorption (acoustics) , biophysics , botany , stereochemistry , biochemistry , biology , organic chemistry , physics , genetics , enzyme , acoustics
— Unconjugated pteridines are associated with the photosynthetic systems of several organisms. Inhibition of the development of the photosynthetic system of Rhodospirillum rubrum with the pteridine inhibitor 4‐phenoxy‐2,6‐diamino pyridine (PDAP) is reversed by biopterin, a natural pteridine. Evidence is presented which indicates an electron transport function for pteridines. Specific interaction of reduced pteridines with isolated pigment protein complexes, leading to red‐shifted absorption bands, has suggested a mechanism for photochemical energy trapping.