ISDA

Entry Detail

PDB ID:

2HG3

Keywords:

PHOTOSYNTHESIS/MEMBRANE PROTEIN

Title:

Reaction centre from Rhodobacter sphaeroides strain R-26.1 complexed with brominated phosphatidylcholine

Biological Source:

Source Organism:

Rhodobacter sphaeroides

PDB Version:

Deposition Date:

2006-06-26

Release Date:

2007-03-27

Method Details:

Experimental Method:

X-RAY DIFFRACTION

Resolution:

2.70 Å

R-Value Free:

0.19

R-Value Work:

0.16

R-Value Observed:

0.16

Space Group:

P 31 2 1

Download Validation Report

Macromolecular Entities

Protein Blast

Polymer Type:polypeptide(L)
Description:Reaction center protein H chain
Chain IDs:C (auth: H)
Chain Length:260
Number of Molecules:1
Biological Source:Rhodobacter sphaeroides

UniProt ID:P0C0Y7 Pfam ID:PF03967, PF05239

Protein Blast

Polymer Type:polypeptide(L)
Description:Reaction center protein L chain
Chain IDs:A (auth: L)
Chain Length:281
Number of Molecules:1
Biological Source:Rhodobacter sphaeroides

UniProt ID:P0C0Y8 Pfam ID:PF00124

Protein Blast

Polymer Type:polypeptide(L)
Description:Reaction center protein M chain
Chain IDs:B (auth: M)
Chain Length:307
Number of Molecules:1
Biological Source:Rhodobacter sphaeroides

UniProt ID:P0C0Y9 Pfam ID:PF00124

Ligand Molecules

BCL

BPH

CDL

GOL

HTO

LDA

PC9

PO4

U10

Primary Citation

Brominated Lipids Identify Lipid Binding Sites on the Surface of the Reaction Center from Rhodobacter sphaeroides.

Roszak, A.W, Gardiner, A.T, Isaacs, N.W, Cogdell, R.J.Show

Biochemistry 46 2909 2916 (2007)

PMID: 17315985 DOI: 10.1021/bi062154i

Abstact

This study describes the use of brominated phospholipids to distinguish between lipid and detergent binding sites on the surface of a typical alpha-helical membrane protein. Reaction centers isolated from Rhodobacter sphaeroides were cocrystallized with added brominated phospholipids. X-ray structural analysis of these crystals has revealed the presence of two lipid binding sites from the characteristic strong X-ray scattering from the bromine atoms. These results demonstrate the usefulness of this approach to mapping lipid binding sites at the surface of membrane proteins.

Legend

Protein

Chemical

Disease

Primary Citation of related structures