2ITA: Solution structure of PufX from Rhodobacter sphaeroides

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.
PDB ID: 2ITADownload
MMDB ID: 43442
PDB Deposition Date: 2006/10/19
Updated in MMDB: 2007/11
Experimental Method:
solution nmr
Source Organism:
Similar Structures:
Molecular Components in 2ITA
Label Count Molecule
Protein (1 molecule)
Intrinsic Membrane Protein Pufx(Gene symbol: pufX)
Molecule annotation
* Click molecule labels to explore molecular sequence information.

Citing MMDB