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Protein phosphorylation as a control for excitation energy transfer in Rhodospirillum rubrum
Author(s) -
Holmes Nigel G.,
Allen John F.
Publication year - 1986
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(86)80527-0
Subject(s) - rhodospirillum rubrum , bacteriochlorophyll , phosphorylation , cooperativity , light harvesting complex , photosynthesis , energy transfer , chemistry , biophysics , biochemistry , biology , photosystem ii , enzyme , molecular physics
Changes in cooperativity of the light‐harvesting system of Rhodospirillum rubrum were monitored in whole cells by measurements of in vivo bacteriochlorophyll fluorescence yield transients. Under non‐cooperative conditions a polypeptide of 10.5 kDa (provisionally identified as B880‐β) was specifically phosphorylated; under cooperative conditions a polypeptide of 13 kDa (provisionally identified as B880‐α) was specifically phosphorylated. These results are discussed in relation to the regulation of excitation energy distribution in purple photosynthetic bacteria and other photosynthetic organisms.