1l9j Summary

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X-Ray Structure of the Cytochrome-c(2)-Photosynthetic Reaction Center Electron Transfer Complex from Rhodobacter sphaeroides in Type I Co-Crystals

The structure was published by Axelrod, H.L., Abresch, E.C., Okamura, M.Y., Yeh, A.P., Rees, D.C., and Feher, G., in 2002 in a paper entitled "X-ray structure determination of the cytochrome c2: reaction center electron transfer complex from Rhodobacter sphaeroides." (abstract).

This crystal structure was determined using X-ray diffraction at a resolution of 3.25 Å and deposited in 2002.

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

This entry contains 40 copies of 4 unique biopolymers (complete list).

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 has more than one probable quaternary state observed. For more details see the quaternary structure page.

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%
R 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 86%
S REACTION CENTER PROTEIN M CHAIN P0C0Y9 (2-308) (RCEM_RHOSH)search Rhodobacter sphaeroidessearch 96% 307 86%
H REACTION CENTER PROTEIN H CHAIN P0C0Y7 (1-260) (RCEH_RHOSH)search Rhodobacter sphaeroidessearch 91% 260 94%
T REACTION CENTER PROTEIN H CHAIN P0C0Y7 (1-260) (RCEH_RHOSH)search Rhodobacter sphaeroidessearch 91% 260 94%
C cytochrome c-2 P0C0X8 (1-124) (CYC2_RHOSH)search Rhodobacter sphaeroidessearch 100% 124 100%
D cytochrome c-2 P0C0X8 (1-124) (CYC2_RHOSH)search Rhodobacter sphaeroidessearch 100% 124 100%


This entry contains 4 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
P0C0X8 (1 - 124) cytochrome c-2 Rhodobacter sphaeroides

Chain Structural classification (SCOP) Structural classification (CATH) Sequence family (Pfam)
L, R (P0C0Y8) Bacterial photosystem II reaction centre, L and M subunitssearch Membrane spanning alpha-helix pairssearch PF00124: Photosynthetic reaction centre proteinsearch
M, S (P0C0Y9) Bacterial photosystem II reaction centre, L and M subunitssearch Membrane spanning alpha-helix pairssearch PF00124: Photosynthetic reaction centre proteinsearch
H, T (P0C0Y7) Photosynthetic reaction centre, H-chain, cytoplasmic domainsearch, Photosystem II reaction centre subunit H, transmembrane regionsearch 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
C, D (P0C0X8) monodomain cytochrome csearch Cytochrome csearch

Chain ID Molecular function (GO) Biological process (GO) Cellular component (GO)
L, R (P0C0Y8) bacteriochlorophyll bindingsearch chlorophyll bindingsearch electron transporter, transferring electrons within the cyclic electron transport pathway of photosynthesis activitysearch metal ion bindingsearch oxidation-reduction processsearch photosynthesissearch protein-chromophore linkagesearch photosynthesis, light reactionsearch photosynthetic electron transport in photosystem IIsearch integral component of membranesearch plasma membrane light-harvesting complexsearch membranesearch plasma membrane-derived chromatophore membranesearch
M, S (P0C0Y9) chlorophyll bindingsearch electron transporter, transferring electrons within the cyclic electron transport pathway of photosynthesis activitysearch bacteriochlorophyll bindingsearch metal ion bindingsearch protein-chromophore linkagesearch photosynthesis, light reactionsearch photosynthetic electron transport in photosystem IIsearch photosynthesissearch oxidation-reduction processsearch membranesearch plasma membrane light-harvesting complexsearch integral component of membranesearch plasma membrane-derived chromatophore membranesearch
H, T (P0C0Y7) electron transporter, transferring electrons within the cyclic electron transport pathway of photosynthesis activitysearch chlorophyll bindingsearch bacteriochlorophyll bindingsearch photosynthesis, light reactionsearch oxidation-reduction processsearch protein-chromophore linkagesearch photosynthesissearch plasma membrane light-harvesting complexsearch membranesearch integral component of membranesearch plasma membrane-derived chromatophore membranesearch
C, D (P0C0X8) heme bindingsearch electron carrier activitysearch metal ion bindingsearch photosynthesissearch oxidation-reduction processsearch periplasmic spacesearch

Chain InterPro annotation
L, R Photosynthetic reaction centre, L/Msearch Photosynthetic reaction centre, L subunitsearch
M, S Photosynthetic reaction centre, L/Msearch Photosynthetic reaction centre, M subunitsearch
H, T 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
C, D Cytochrome c-like domainsearch