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A fifth chloroplast‐encoded polypeptide is present in the photosystem II reaction centre complex
Author(s) -
Webber A.N.,
Packman L.,
Chapman D.J.,
Barber J.,
Gray J.C.
Publication year - 1989
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(89)80481-8
Subject(s) - open reading frame , chloroplast , chloroplast dna , photosynthetic reaction centre , photosystem ii , photosystem i , biology , gene , polyacrylamide gel electrophoresis , biochemistry , cytochrome b , chemistry , microbiology and biotechnology , peptide sequence , mitochondrial dna , photosynthesis , enzyme
The small polypeptides present in the pea photosystem II reaction centre complex have been separated by high‐resolution SDS‐polyacrylamide gel electrophoresis and characterised by N‐terminal amino acid sequencing. Two polypeptides are identified as the α‐ and β‐subunits of cytochrome b 559 which are the products of the pdb E and psb F genes. A third polypeptide, of 4.5 kDA, is identified as the product of a small open reading frame in chloroplast DNA. The gene for this polypeptide , psb I, is located just downstream of the psb K gene chloroplast DNA.