2hit Summary

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Reaction centre from Rhodobacter sphaeroides strain R-26.1 complexed with dibrominated phosphatidylethanolamine

The structure was published by Roszak, A.W., Gardiner, A.T., Isaacs, N.W., and Cogdell, R.J., in 2007 in a paper entitled "Brominated Lipids Identify Lipid Binding Sites on the Surface of the Reaction Center from Rhodobacter sphaeroides." (abstract).

This crystal structure was determined using X-ray diffraction at a resolution of 2.75 Å and deposited in 2006.

The experimental data on which the structure is based was also deposited.

This PDB entry contains a complex of 3 biomacromolecules, namely Reaction center protein L chain, Reaction center protein M chain, and Reaction center protein H chain.

It also contains one or more heterogenic compounds (e.g., ligands, co-factors, ions, modified amino acids, etc.); see here for a complete list.

The molecule most likely forms heterotrimers.

The following tables show cross-reference information to other databases (to obtain a list of all PDB entries sharing the same property or classification, click on the magnifying glass icon):


Chain Name UniProt Name of source organism % of UniProt sequence present in the sample Residues in the sample molecules % of residues observed
L Reaction center protein L chain P0C0Y8 (2-282) (RCEL_RHOSH)search Rhodobacter sphaeroidessearch 94% 281 100%
M Reaction center protein M chain P0C0Y9 (2-308) (RCEM_RHOSH)search Rhodobacter sphaeroidessearch 96% 307 98%
H Reaction center protein H chain P0C0Y7 (1-260) (RCEH_RHOSH)search Rhodobacter sphaeroidessearch 91% 260 93%


This entry contains 3 unique UniProt proteins:

UniProt accession Name Organism PDB
P0C0Y8 (2 - 282) Reaction center protein L chain Rhodobacter sphaeroides
P0C0Y9 (2 - 308) Reaction center protein M chain Rhodobacter sphaeroides
P0C0Y7 (1 - 260) Reaction center protein H chain Rhodobacter sphaeroides

Chain Structural classification (SCOP) Structural classification (CATH) Sequence family (Pfam)
L (P0C0Y8) Bacterial photosystem II reaction centre, L and M subunitssearch Membrane spanning alpha-helix pairssearch PF00124: Photosynthetic reaction centre proteinsearch
M (P0C0Y9) Bacterial photosystem II reaction centre, L and M subunitssearch Membrane spanning alpha-helix pairssearch PF00124: Photosynthetic reaction centre proteinsearch
H (P0C0Y7) Photosynthetic Reaction Center, subunit H, domain 1search, Photosynthetic Reaction Center, subunit H, domain 2search PF03967: Photosynthetic reaction centre, H-chain N-terminal regionsearch, PF05239: PRC-barrel domainsearch

Chain ID Molecular function (GO) Biological process (GO) Cellular component (GO)
L (P0C0Y8) bacteriochlorophyll bindingsearch metal ion bindingsearch chlorophyll bindingsearch electron transporter, transferring electrons within the cyclic electron transport pathway of photosynthesis activitysearch protein-chromophore linkagesearch oxidation-reduction processsearch photosynthesissearch photosynthetic electron transport in photosystem IIsearch photosynthesis, light reactionsearch integral component of membranesearch membranesearch
M (P0C0Y9) chlorophyll bindingsearch bacteriochlorophyll bindingsearch metal ion bindingsearch electron transporter, transferring electrons within the cyclic electron transport pathway of photosynthesis activitysearch photosynthesissearch oxidation-reduction processsearch photosynthetic electron transport in photosystem IIsearch protein-chromophore linkagesearch photosynthesis, light reactionsearch membranesearch integral component of membranesearch
H (P0C0Y7) electron transporter, transferring electrons within the cyclic electron transport pathway of photosynthesis activitysearch chlorophyll bindingsearch bacteriochlorophyll bindingsearch photosynthesis, light reactionsearch photosynthesissearch protein-chromophore linkagesearch oxidation-reduction processsearch plasma membrane light-harvesting complexsearch integral component of membranesearch membranesearch

Chain InterPro annotation
L Photosynthetic reaction centre, L/Msearch Photosynthetic reaction centre, L subunitsearch
M Photosynthetic reaction centre, L/Msearch Photosynthetic reaction centre, M subunitsearch
H Photosynthetic reaction centre, H subunitsearch PRC-barrel-likesearch Bacterial photosynthetic reaction centre, H-chain, C-terminalsearch Photosynthetic reaction centre, H subunit, N-terminalsearch PRC-barrel domainsearch