The solution structure of the PufX polypeptide from Rhodobacter sphaeroides.
FEBS Lett
; 580(30): 6967-71, 2006 Dec 22.
Article
em En
| MEDLINE
| ID: mdl-17161397
PufX organizes the photosynthetic reaction centre-light harvesting complex 1 (RC-LH1) core complex of Rhodobacter sphaeroides and facilitates quinol/quinone exchange between the RC and cytochrome bc(1) complexes. The structure of PufX in organic solvent reveals two hydrophobic helices flanked by unstructured termini and connected by a helical bend. The proposed location of basic residues and tryptophans at the membrane interface orients the C-terminal helix along the membrane normal, with the GXXXG motifs in positions unsuitable as direct drivers of dimerisation of the RC-LH1 complex. The N-terminal helix is predicted to extend approximately 40 Anggstrom along the membrane interface.
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Coleções:
01-internacional
Temas:
Geral
Base de dados:
MEDLINE
Assunto principal:
Peptídeos
/
Proteínas de Bactérias
/
Rhodobacter sphaeroides
/
Complexos de Proteínas Captadores de Luz
Tipo de estudo:
Prognostic_studies
Idioma:
En
Revista:
FEBS Lett
Ano de publicação:
2006
Tipo de documento:
Article