2hh1 Summary

pdbe.org/2hh1
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Reaction centre from Rhodobacter sphaeroides strain R-26.1 complexed with dibrominated phosphatidylcholine

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

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