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- PDB-1k6l: Photosynethetic Reaction Center from Rhodobacter sphaeroides -

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Basic information

Entry
Database: PDB / ID: 1k6l
TitlePhotosynethetic Reaction Center from Rhodobacter sphaeroides
Components(PHOTOSYNTHETIC REACTION CENTER ...) x 3
KeywordsPHOTOSYNTHESIS / PHOTOSYNTHETIC REACTION CENTER / MEMBRANE PROTEIN
Function / homology
Function and homology information


: / plasma membrane-derived chromatophore membrane / plasma membrane light-harvesting complex / bacteriochlorophyll binding / photosynthetic electron transport in photosystem II / : / photosynthesis, light reaction / membrane => GO:0016020 / metal ion binding
Similarity search - Function
Photosynthetic Reaction Center; Chain H, domain 1 / Photosynthetic reaction centre, H subunit, N-terminal domain / Photosynthetic Reaction Center; Chain H, domain 2 / Photosynthetic Reaction Center, subunit H, domain 2 / Photosynthetic Reaction Center, subunit M; domain 1 / Photosystem II protein D1-like / Photosynthetic reaction centre, H subunit / Bacterial photosynthetic reaction centre, H-chain, C-terminal / Photosynthetic reaction centre, M subunit / Photosynthetic reaction centre, H subunit, N-terminal ...Photosynthetic Reaction Center; Chain H, domain 1 / Photosynthetic reaction centre, H subunit, N-terminal domain / Photosynthetic Reaction Center; Chain H, domain 2 / Photosynthetic Reaction Center, subunit H, domain 2 / Photosynthetic Reaction Center, subunit M; domain 1 / Photosystem II protein D1-like / Photosynthetic reaction centre, H subunit / Bacterial photosynthetic reaction centre, H-chain, C-terminal / Photosynthetic reaction centre, M subunit / Photosynthetic reaction centre, H subunit, N-terminal / PRC-barrel domain / Photosynthetic reaction centre, H subunit, N-terminal domain superfamily / Photosynthetic reaction centre, H-chain N-terminal region / PRC-barrel domain / Photosynthetic reaction centre, L subunit / PRC-barrel-like superfamily / : / Photosynthetic reaction centre, L/M / Photosystem II protein D1/D2 superfamily / Photosynthetic reaction centre protein / Photosynthetic reaction center proteins signature. / Few Secondary Structures / Irregular / Alpha-Beta Complex / Up-down Bundle / Mainly Alpha / Alpha Beta
Similarity search - Domain/homology
BACTERIOCHLOROPHYLL A / BACTERIOPHEOPHYTIN A / CARDIOLIPIN / : / SPEROIDENONE / UBIQUINONE-10 / Reaction center protein M chain / Reaction center protein L chain / Reaction center protein H chain / Reaction center protein L chain ...BACTERIOCHLOROPHYLL A / BACTERIOPHEOPHYTIN A / CARDIOLIPIN / : / SPEROIDENONE / UBIQUINONE-10 / Reaction center protein M chain / Reaction center protein L chain / Reaction center protein H chain / Reaction center protein L chain / Reaction center protein M chain / Reaction center protein H chain
Similarity search - Component
Biological speciesRhodobacter sphaeroides (bacteria)
MethodX-RAY DIFFRACTION / Rigid-body refinement / Resolution: 3.1 Å
AuthorsPokkuluri, P.R. / Laible, P.D. / Deng, Y.-L. / Wong, T.N. / Hanson, D.K. / Schiffer, M.
CitationJournal: Biochemistry / Year: 2002
Title: The structure of a mutant photosynthetic reaction center shows unexpected changes in main chain orientations and quinone position.
Authors: Pokkuluri, P.R. / Laible, P.D. / Deng, Y.L. / Wong, T.N. / Hanson, D.K. / Schiffer, M.
History
DepositionOct 16, 2001Deposition site: RCSB / Processing site: RCSB
Revision 1.0Aug 7, 2002Provider: repository / Type: Initial release
Revision 1.1Apr 27, 2008Group: Version format compliance
Revision 1.2Jul 13, 2011Group: Non-polymer description / Version format compliance
Revision 1.3Aug 16, 2023Group: Data collection / Database references ...Data collection / Database references / Derived calculations / Refinement description
Category: chem_comp_atom / chem_comp_bond ...chem_comp_atom / chem_comp_bond / database_2 / pdbx_initial_refinement_model / pdbx_struct_conn_angle / software / struct_conn / struct_ref_seq_dif / struct_site
Item: _database_2.pdbx_DOI / _database_2.pdbx_database_accession ..._database_2.pdbx_DOI / _database_2.pdbx_database_accession / _pdbx_struct_conn_angle.ptnr1_auth_asym_id / _pdbx_struct_conn_angle.ptnr1_auth_comp_id / _pdbx_struct_conn_angle.ptnr1_auth_seq_id / _pdbx_struct_conn_angle.ptnr1_label_asym_id / _pdbx_struct_conn_angle.ptnr1_label_atom_id / _pdbx_struct_conn_angle.ptnr1_label_comp_id / _pdbx_struct_conn_angle.ptnr1_label_seq_id / _pdbx_struct_conn_angle.ptnr2_auth_asym_id / _pdbx_struct_conn_angle.ptnr2_auth_comp_id / _pdbx_struct_conn_angle.ptnr2_auth_seq_id / _pdbx_struct_conn_angle.ptnr2_label_asym_id / _pdbx_struct_conn_angle.ptnr2_label_atom_id / _pdbx_struct_conn_angle.ptnr2_label_comp_id / _pdbx_struct_conn_angle.ptnr3_auth_asym_id / _pdbx_struct_conn_angle.ptnr3_auth_comp_id / _pdbx_struct_conn_angle.ptnr3_auth_seq_id / _pdbx_struct_conn_angle.ptnr3_label_asym_id / _pdbx_struct_conn_angle.ptnr3_label_atom_id / _pdbx_struct_conn_angle.ptnr3_label_comp_id / _pdbx_struct_conn_angle.ptnr3_label_seq_id / _pdbx_struct_conn_angle.value / _struct_conn.pdbx_dist_value / _struct_conn.ptnr1_auth_asym_id / _struct_conn.ptnr1_auth_comp_id / _struct_conn.ptnr1_auth_seq_id / _struct_conn.ptnr1_label_asym_id / _struct_conn.ptnr1_label_atom_id / _struct_conn.ptnr1_label_comp_id / _struct_conn.ptnr1_label_seq_id / _struct_conn.ptnr2_auth_asym_id / _struct_conn.ptnr2_auth_comp_id / _struct_conn.ptnr2_auth_seq_id / _struct_conn.ptnr2_label_asym_id / _struct_conn.ptnr2_label_atom_id / _struct_conn.ptnr2_label_comp_id / _struct_conn.ptnr2_label_seq_id / _struct_ref_seq_dif.details / _struct_site.pdbx_auth_asym_id / _struct_site.pdbx_auth_comp_id / _struct_site.pdbx_auth_seq_id

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Structure visualization

Structure viewerMolecule:
MolmilJmol/JSmol

Downloads & links

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Assembly

Deposited unit
L: PHOTOSYNTHETIC REACTION CENTER L SUBUNIT
M: PHOTOSYNTHETIC REACTION CENTER M SUBUNIT
H: PHOTOSYNTHETIC REACTION CENTER H SUBUNIT
hetero molecules


Theoretical massNumber of molelcules
Total (without water)104,96218
Polymers94,7783
Non-polymers10,18415
Water2,468137
1


  • Idetical with deposited unit
  • defined by author&software
TypeNameSymmetry operationNumber
identity operation1_555x,y,z1
Buried area35290 Å2
ΔGint-230 kcal/mol
Surface area29470 Å2
MethodPISA
Unit cell
Length a, b, c (Å)141.5, 141.5, 187.2
Angle α, β, γ (deg.)90.0, 90.0, 120.0
Int Tables number152
Space group name H-MP3121

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Components

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PHOTOSYNTHETIC REACTION CENTER ... , 3 types, 3 molecules LMH

#1: Protein PHOTOSYNTHETIC REACTION CENTER L SUBUNIT / Reaction center protein L chain


Mass: 31346.389 Da / Num. of mol.: 1
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Rhodobacter sphaeroides (bacteria) / Gene: PUFQBALMX / Plasmid: pRKHTMHBgl / Production host: Rhodobacter sphaeroides (bacteria) / Strain (production host): DeltaDelta11 / References: UniProt: P02954, UniProt: P0C0Y8*PLUS
#2: Protein PHOTOSYNTHETIC REACTION CENTER M SUBUNIT / Reaction center protein M chain


Mass: 35365.559 Da / Num. of mol.: 1
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Rhodobacter sphaeroides (bacteria) / Gene: PUFQBALMX / Plasmid: pRKHTMHBgl / Production host: Rhodobacter sphaeroides (bacteria) / Strain (production host): DeltaDelta11 / References: UniProt: P02953, UniProt: P0C0Y9*PLUS
#3: Protein PHOTOSYNTHETIC REACTION CENTER H SUBUNIT / Reaction center protein H chain


Mass: 28066.322 Da / Num. of mol.: 1
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Rhodobacter sphaeroides (bacteria) / Gene: PUFQBALMX / Plasmid: pRKHTMHBgl / Production host: Rhodobacter sphaeroides (bacteria) / Strain (production host): DeltaDelta11 / References: UniProt: P11846, UniProt: P0C0Y7*PLUS

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Non-polymers , 8 types, 152 molecules

#4: Chemical
ChemComp-BCL / BACTERIOCHLOROPHYLL A


Mass: 911.504 Da / Num. of mol.: 4 / Source method: obtained synthetically / Formula: C55H74MgN4O6
#5: Chemical ChemComp-BPH / BACTERIOPHEOPHYTIN A


Mass: 889.215 Da / Num. of mol.: 2 / Source method: obtained synthetically / Formula: C55H76N4O6
#6: Chemical ChemComp-U10 / UBIQUINONE-10 / Coenzyme Q10


Mass: 863.343 Da / Num. of mol.: 2 / Source method: obtained synthetically / Formula: C59H90O4
#7: Chemical
ChemComp-LDA / LAURYL DIMETHYLAMINE-N-OXIDE


Mass: 229.402 Da / Num. of mol.: 4 / Source method: obtained synthetically / Formula: C14H31NO / Comment: LDAO, detergent*YM
#8: Chemical ChemComp-FE / FE (III) ION


Mass: 55.845 Da / Num. of mol.: 1 / Source method: obtained synthetically / Formula: Fe
#9: Chemical ChemComp-SPN / SPEROIDENONE


Mass: 594.993 Da / Num. of mol.: 1 / Source method: obtained synthetically / Formula: C41H70O2
#10: Chemical ChemComp-CDL / CARDIOLIPIN / DIPHOSPHATIDYL GLYCEROL / BIS-(1,2-DIACYL-SN-GLYCERO-3-PHOSPHO)-1',3'-SN-GLYCEROL


Mass: 1464.043 Da / Num. of mol.: 1 / Source method: obtained synthetically / Formula: C81H156O17P2 / Comment: phospholipid*YM
#11: Water ChemComp-HOH / water


Mass: 18.015 Da / Num. of mol.: 137 / Source method: isolated from a natural source / Formula: H2O

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Experimental details

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Experiment

ExperimentMethod: X-RAY DIFFRACTION / Number of used crystals: 3

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Sample preparation

CrystalDensity Matthews: 5.71 Å3/Da / Density % sol: 78.45 %
Crystal growTemperature: 293 K / Method: vapor diffusion, sitting drop / pH: 7.5
Details: potassium phosphate, ldao, heptane triol, dioxane, pH 7.5, VAPOR DIFFUSION, SITTING DROP, temperature 293K

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Data collection

DiffractionMean temperature: 293 K
Diffraction sourceSource: ROTATING ANODE / Type: RIGAKU RU200 / Wavelength: 1.54 Å
DetectorType: RIGAKU RAXIS IIC / Detector: IMAGE PLATE / Date: Sep 19, 2000 / Details: Mirrors
RadiationMonochromator: Ni Filter / Protocol: SINGLE WAVELENGTH / Monochromatic (M) / Laue (L): M / Scattering type: x-ray
Radiation wavelengthWavelength: 1.54 Å / Relative weight: 1
ReflectionResolution: 3.1→20 Å / Num. all: 36650 / Num. obs: 36650 / % possible obs: 92.1 % / Observed criterion σ(I): -3 / Redundancy: 2.8 % / Rmerge(I) obs: 0.096 / Net I/σ(I): 10.1
Reflection shellResolution: 3.1→3.21 Å / Redundancy: 2.7 % / Rmerge(I) obs: 0.281 / Mean I/σ(I) obs: 3.5 / Num. unique all: 3445 / % possible all: 87.2
Reflection
*PLUS
Lowest resolution: 10 Å / Num. obs: 31406 / % possible obs: 92 % / Rmerge(I) obs: 0.096
Reflection shell
*PLUS
% possible obs: 87 % / Rmerge(I) obs: 0.281

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Processing

Software
NameClassification
CNSrefinement
DENZOdata reduction
SCALEPACKdata scaling
CNSphasing
RefinementMethod to determine structure: Rigid-body refinement
Starting model: 1PCR

1pcr


Resolution: 3.1→10 Å / σ(F): 2
Details: The structure is not refined; the coordinates are adjusted to fit the electron density and the geometry is regularized with the program CHAIN.
RfactorNum. reflection% reflectionSelection details
Rfree0.194 2183 -RANDOM
Rwork0.193 ---
all-36650 --
obs-31406 81.4 %-
Refinement stepCycle: LAST / Resolution: 3.1→10 Å
ProteinNucleic acidLigandSolventTotal
Num. atoms6469 0 679 137 7285
Software
*PLUS
Classification: refinement
Refinement
*PLUS
Highest resolution: 3.1 Å / Rfactor Rfree: 0.194 / Rfactor Rwork: 0.193
Solvent computation
*PLUS
Displacement parameters
*PLUS

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