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N‐terminal amino acid sequence analysis of the subunits of pea photosystem I
Author(s) -
Dunn Paul P.J.,
Packman Leonard C.,
Pappin Darryl,
Gray John C.
Publication year - 1988
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(88)80607-0
Subject(s) - protein subunit , photosystem i , cysteine , peptide sequence , biochemistry , amino acid , alanine , photosystem ii , chemistry , sequence (biology) , n terminus , amino acid residue , biology , photosynthesis , enzyme , gene
Six ‘core’ subunits of pea photosystem I have been isolated and their N‐terminal amino acid sequences determined by gas‐phase or solid‐phase sequencing. On average more than thirty residues were determined from the N‐terminus of each polypeptide. This sequence analysis has revealed three polypeptides with charged N‐terminal regions (21, 17 and 11 kDa subunits), one polypeptide with a predominantly hydrophobic N‐terminal region (9 kDa subunit), one polypeptide which is cysteine‐rich (8 kDa subunit) and one which is alanine‐rich (13 kDa subunit).