2ita
From Proteopedia
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'''Solution structure of PufX from Rhodobacter sphaeroides''' | '''Solution structure of PufX from Rhodobacter sphaeroides''' | ||
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[[Category: Tunnicliffe, R B.]] | [[Category: Tunnicliffe, R B.]] | ||
[[Category: Williamson, M P.]] | [[Category: Williamson, M P.]] | ||
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Revision as of 04:50, 4 May 2008
Solution structure of PufX from Rhodobacter sphaeroides
Overview
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.
About this Structure
2ITA is a Single protein structure of sequence from Rhodobacter sphaeroides. Full crystallographic information is available from OCA.
Reference
The solution structure of the PufX polypeptide from Rhodobacter sphaeroides., Tunnicliffe RB, Ratcliffe EC, Hunter CN, Williamson MP, FEBS Lett. 2006 Dec 22;580(30):6967-71. Epub 2006 Dec 4. PMID:17161397 Page seeded by OCA on Sun May 4 07:50:33 2008
