2ITA | pdb_00002ita

The solution structure of the PufX polypeptide from Rhodobacter sphaeroides.

(2006) FEBS Lett 580: 6967-6971

• PubMed: 17161397 Search on PubMed
• DOI: https://doi.org/10.1016/j.febslet.2006.11.065
• Primary Citation of Related Structures:  
  2ITA, 2NRG


• PubMed Abstract: 
  

  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.

   View More

---

Organizational Affiliation: 

Department of Molecular Biology and Biotechnology, University of Sheffield, Firth Court, Western Bank, Sheffield S10 2TN, UK.