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- PDB-3dtr: E(L212)Q, L(L227)F double mutant structure of photosynthetic reac... -

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Basic information

Entry
Database: PDB / ID: 3dtr
TitleE(L212)Q, L(L227)F double mutant structure of photosynthetic reaction center from Rhodobacter sphaeroides
Components(Reaction center protein ...) x 3
KeywordsPHOTOSYNTHESIS / Mutant photosynthetic reaction center / Phenotypic revertant / Proton transfer / 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 / 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 H chain / Reaction center protein L chain / Reaction center protein M chain
Similarity search - Component
Biological speciesRhodobacter sphaeroides (bacteria)
MethodX-RAY DIFFRACTION / MOLECULAR REPLACEMENT / Resolution: 3.1 Å
AuthorsPokkuluri, P.R. / Schiffer, M.
CitationJournal: To be Published
Title: Restoring proton transfer in L212Q mutant of photosynthetic reaction center
Authors: Pokkuluri, P.R. / Laible, P.D. / Hanson, D.K. / Schiffer, M.
History
DepositionJul 15, 2008Deposition site: RCSB / Processing site: RCSB
Revision 1.0Jun 30, 2009Provider: repository / Type: Initial release
Revision 1.1Jul 13, 2011Group: Non-polymer description / Version format compliance
Revision 1.2Oct 20, 2021Group: Database references / Derived calculations / Category: database_2 / 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 / _struct_ref_seq_dif.details / _struct_site.pdbx_auth_asym_id / _struct_site.pdbx_auth_comp_id / _struct_site.pdbx_auth_seq_id
Revision 1.3Aug 30, 2023Group: Data collection / Refinement description
Category: chem_comp_atom / chem_comp_bond / pdbx_initial_refinement_model

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Structure visualization

Structure viewerMolecule:
MolmilJmol/JSmol

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Assembly

Deposited unit
L: Reaction center protein L chain
M: Reaction center protein M chain
H: Reaction center protein H chain
hetero molecules


Theoretical massNumber of molelcules
Total (without water)104,99518
Polymers94,8113
Non-polymers10,18415
Water2,486138
1


  • Idetical with deposited unit
  • defined by author&software
TypeNameSymmetry operationNumber
identity operation1_555x,y,z1
Buried area35150 Å2
ΔGint-228 kcal/mol
Surface area29430 Å2
MethodPISA
Unit cell
Length a, b, c (Å)141.700, 141.700, 187.000
Angle α, β, γ (deg.)90.00, 90.00, 120.00
Int Tables number152
Space group name H-MP3121
DetailsAuthors state that the photosynthetic reaction center is a complex made up of three protein chains (L, M, H) and several co-factors.

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Components

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Reaction center protein ... , 3 types, 3 molecules LMH

#1: Protein Reaction center protein L chain / Photosynthetic reaction center L subunit


Mass: 31379.420 Da / Num. of mol.: 1 / Mutation: E(L212)Q, L(L227)F
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Rhodobacter sphaeroides (bacteria) / Gene: pufL / Production host: Rhodobacter sphaeroides (bacteria) / References: UniProt: P0C0Y8
#2: Protein Reaction center protein M chain / Photosynthetic reaction center M subunit


Mass: 35365.559 Da / Num. of mol.: 1
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Rhodobacter sphaeroides (bacteria) / Gene: pufM / Production host: Rhodobacter sphaeroides (bacteria) / References: UniProt: P0C0Y9
#3: Protein Reaction center protein H chain / Photosynthetic reaction center H subunit


Mass: 28066.322 Da / Num. of mol.: 1
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Rhodobacter sphaeroides (bacteria) / Gene: puhA / Production host: Rhodobacter sphaeroides (bacteria) / References: UniProt: P0C0Y7

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Non-polymers , 8 types, 153 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.: 138 / 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: 4

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Sample preparation

CrystalDensity Matthews: 5.77 Å3/Da / Density % sol: 78.77 %
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: Jun 8, 2004 / Details: mirrors
RadiationProtocol: 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. obs: 36750 / % possible obs: 96 % / Observed criterion σ(I): -3 / Redundancy: 3.1 % / Rmerge(I) obs: 0.119 / Net I/σ(I): 11.2
Reflection shellResolution: 3.1→3.21 Å / Redundancy: 2.8 % / Rmerge(I) obs: 0.455 / Mean I/σ(I) obs: 2.7 / Num. unique all: 3257 / % possible all: 91

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Processing

Software
NameClassification
CNSrefinement
DENZOdata reduction
SCALEPACKdata scaling
CNSphasing
RefinementMethod to determine structure: MOLECULAR REPLACEMENT
Starting model: 1K6L with the two mutation sites changed as follows: L212Glu changed to Gln (just atom NE2 changed to OE2 kept the same coordinates) and L227Leu changed to Ala by truncating the sidechain at CB

1k6l


Resolution: 3.1→20 Å / σ(F): 2 / Stereochemistry target values: Engh & Huber
Details: After refitting, only isotropic B-factor refinement was done with CNS. No positional refinement was done
RfactorNum. reflection% reflectionSelection details
Rfree0.2004 2303 -random
Rwork0.1952 ---
all-36254 --
obs-32919 83 %-
Refinement stepCycle: LAST / Resolution: 3.1→20 Å
ProteinNucleic acidLigandSolventTotal
Num. atoms6437 0 679 138 7254

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