1PYH image
Deposition Date 2003-07-08
Release Date 2004-03-02
Last Version Date 2024-04-03
Entry Detail
PDB ID:
1PYH
Keywords:
PHOTOSYNTHESIS
Title:
Crystal structure of RC-LH1 core complex from Rhodopseudomonas palustris
Biological Source:
Source Organism:
Rhodopseudomonas palustris (Taxon ID: 1076)
Method Details:
Experimental Method:
X-RAY DIFFRACTION
Resolution:
4.80 Å
R-Value Free:
0.49
R-Value Work:
0.46
R-Value Observed:
0.46
Space Group:
P 1
1PYH validation report
Macromolecular Entities
Polymer Type:polypeptide(L)
Molecule:Reaction center protein L chain
Chain IDs:A
Chain Length:281
Number of Molecules:1
Biological Source:Rhodopseudomonas palustris
Polymer Type:polypeptide(L)
Molecule:Reaction center protein M chain
Chain IDs:B
Chain Length:302
Number of Molecules:1
Biological Source:Rhodopseudomonas palustris
Polymer Type:polypeptide(L)
Molecule:Reaction center protein H chain
Chain IDs:C
Chain Length:241
Number of Molecules:1
Biological Source:Rhodopseudomonas palustris
Polymer Type:polypeptide(L)
Molecule:Light-harvesting protein B-800/850, alpha chain
Chain IDs:D, F, H, J, L, N, P, R, T, V, X, Z, AA (auth: 1), CA (auth: 3), EA (auth: 5), GA (auth: 7)
Chain Length:26
Number of Molecules:16
Biological Source:Rhodopseudomonas palustris
Polymer Type:polypeptide(L)
Molecule:Light-harvesting protein B-800/850, beta chain
Chain IDs:E, G, I, K, M, O, Q, S, U, W, Y, BA (auth: 2), DA (auth: 4), FA (auth: 6), HA (auth: 8)
Chain Length:30
Number of Molecules:15
Biological Source:Rhodopseudomonas palustris
Ligand Molecules
BCL
BPH
FE
Primary Citation
Crystal structure of the RC-LH1 core complex from Rhodopseudomonas palustris.
Science 302 1969 1972 (2003)
PMID: 14671305 DOI: 10.1126/science.1088892

Abstact

The crystal structure at 4.8 angstrom resolution of the reaction center-light harvesting 1 (RC-LH1) core complex from Rhodopseudomonas palustris shows the reaction center surrounded by an oval LH1 complex that consists of 15 pairs of transmembrane helical alpha- and beta-apoproteins and their coordinated bacteriochlorophylls. Complete closure of the RC by the LH1 is prevented by a single transmembrane helix, out of register with the array of inner LH1 alpha-apoproteins. This break, located next to the binding site in the reaction center for the secondary electron acceptor ubiquinone (UQB), may provide a portal through which UQB can transfer electrons to cytochrome b/c1.

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Protein

Chemical

Disease

Primary Citation of related structures
1PYH
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