Photosystem I reaction-centre proteins contain leucine zipper motifs. A proposed role in dimer formation.
FEBS Lett
; 264(1): 1-4, 1990 May 07.
Article
em En
| MEDLINE
| ID: mdl-2186925
ABSTRACT
The photosystem I (PS I) reaction-centre polypeptides, encoded by the psaA and psaB genes, are shown to contain several highly conserved leucine repeats, consisting of a leucine residue every seventh amino acid, similar to the leucine zipper motifs known to mediate DNA-binding polypeptide dimerisation. In each of the PSI reaction-centre subunits the leucine zipper motif precedes highly conserved cysteine residues which have been proposed to ligate the interpolypeptide [4Fe-4S] centre, Fx. We propose that PS I reaction-centre dimerisation and [4Fe-4S] centre formation are mediated through the leucine zipper.
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Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Proteínas de Plantas
/
Clorofila
Idioma:
En
Ano de publicação:
1990
Tipo de documento:
Article