2RCR image
Entry Detail
PDB ID:
2RCR
Title:
STRUCTURE OF THE MEMBRANE-BOUND PROTEIN PHOTOSYNTHETIC REACTION CENTER FROM RHODOBACTER SPHAEROIDES
Biological Source:
Source Organism:
PDB Version:
Deposition Date:
1991-02-04
Release Date:
1993-07-15
Method Details:
Experimental Method:
Resolution:
3.10 Å
R-Value Observed:
0.22
Space Group:
P 21 21 21
Macromolecular Entities
Polymer Type:polypeptide(L)
Description:PHOTOSYNTHETIC REACTION CENTER (H SUBUNIT)
Chain IDs:C (auth: H)
Chain Length:260
Number of Molecules:1
Biological Source:Rhodobacter sphaeroides
Polymer Type:polypeptide(L)
Description:PHOTOSYNTHETIC REACTION CENTER (L SUBUNIT)
Chain IDs:A (auth: L)
Chain Length:281
Number of Molecules:1
Biological Source:Rhodobacter sphaeroides
Polymer Type:polypeptide(L)
Description:PHOTOSYNTHETIC REACTION CENTER (M SUBUNIT)
Chain IDs:B (auth: M)
Chain Length:307
Number of Molecules:1
Biological Source:Rhodobacter sphaeroides
Primary Citation
Structure of the membrane-bound protein photosynthetic reaction center from Rhodobacter sphaeroides.
Biochemistry 30 5352 5360 (1991)
PMID: 2036404 DOI: 10.1021/bi00236a005

Abstact

The structure of the photosynthetic reaction center (RC) from Rhodobacter sphaeroides was determined at 3.1-A resolution by the molecular replacement method, using the Rhodopseudomonas viridis RC as the search structure. Atomic coordinates were refined with the difference Fourier method and restrained least-squares refinement techniques to a current R factor of 22%. The tertiary structure of the RC complex is stabilized by hydrophobic interactions between the L and M chains, by interactions of the pigments with each other and with the L and M chains, by residues from the L and M chains that coordinate to the Fe2+, by salt bridges that are formed between the L and M chains and the H chain, and possibly by electrostatic forces between the ends of helices. The conserved residues at the N-termini of the L and M chains were identified as recognition sites for the H chain.

Legend

Protein

Chemical

Disease

Primary Citation of related structures