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Amino acid sequence of photosystem I subunit IV from the cyanobacterium Synechocystis PCC 6803
Author(s) -
Rousseau Françoise,
Lagoutte Bernard
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)80113-w
Subject(s) - photosystem i , synechocystis , protein subunit , photosystem ii , peptide sequence , amino acid , sequence (biology) , chloroplast , biochemistry , chlamydomonas , chemistry , biology , cyanobacteria , photosynthesis , bacteria , genetics , gene , mutant
We describe here the complete amino acid sequence of photosystem I subunit IV from Synechocystis 6803. The molecular mass of 8.0 kDa is lower than in higher plants and Chlamydomonas , due to the lack of a characteristic, proline‐rich, N‐terminal sequence. The remaining sequence exhibits a good conservation, with a hydrophilic and strongly basic N‐tenninal head followed by two hydrophobic domains. There is no possibility of classical membrane‐spanning alpha helices. This component is likely to be one of the most stroma accessible subunits of photosystem I.