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Modification of a gInB‐like gene product by photosynthetic electron transport in the cyanobacterium Synechococcus 6301
Author(s) -
Harrison Michael A.,
Keen Jeffrey N.,
Findlay John B.C.,
Allen John F.
Publication year - 1990
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(90)80755-8
Subject(s) - synechococcus , photosynthesis , electron transport chain , cyanobacteria , chemistry , botany , biophysics , biology , genetics , bacteria
Covalent modification of a 13 kDa soluble‐phase protein occurs during adaptation of cells of the cyanobacterium Synechococcus 6301 (mutant AN 112) to light specifically absorbed by photosystem II. This adaptation is accompanied by functional changes indicative of altered excitation energy distribution between the photosystems. The 13 kDa protein is identified by solid‐phase N‐terminal sequencing as a protein related to P II , the glnB gene product of E. coli . In E. coli , the P II protein undergoes uridylylation and acts as a regulator of glutamine synthetase at both the post‐translational and transcriptional levels. The implications of modification of a transcriptional regulator by photosynthetic electron transport are discussed.