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- PDB-3utx: Crystal structure of bacteriorhodopsin mutant T46A -

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Basic information

Entry
Database: PDB / ID: 3utx
TitleCrystal structure of bacteriorhodopsin mutant T46A
ComponentsBacteriorhodopsin
KeywordsPROTON TRANSPORT / MEMBRANE PROTEIN / PHOTORECEPTOR PROTEIN / RETINAL PROTEIN / ION TRANSPORT / SENSORY TRANSDUCTION
Function / homology
Function and homology information


photoreceptor activity / phototransduction / proton transmembrane transport / monoatomic ion channel activity / plasma membrane
Similarity search - Function
Bacterial rhodopsins retinal binding site. / Bacterial rhodopsins signature 1. / Rhodopsin, retinal binding site / Bacteriorhodopsin-like protein / Archaeal/bacterial/fungal rhodopsins / Bacteriorhodopsin-like protein / Rhopdopsin 7-helix transmembrane proteins / Rhodopsin 7-helix transmembrane proteins / Up-down Bundle / Mainly Alpha
Similarity search - Domain/homology
DODECANE / RETINAL / Bacteriorhodopsin
Similarity search - Component
Biological speciesHalobacterium sp. (Halophile)
MethodX-RAY DIFFRACTION / SYNCHROTRON / MOLECULAR REPLACEMENT / Resolution: 2.47 Å
AuthorsCao, Z. / Bowie, J.U.
CitationJournal: Proc.Natl.Acad.Sci.USA / Year: 2012
Title: Shifting hydrogen bonds may produce flexible transmembrane helices.
Authors: Cao, Z. / Bowie, J.U.
History
DepositionNov 27, 2011Deposition site: RCSB / Processing site: RCSB
Revision 1.0May 9, 2012Provider: repository / Type: Initial release
Revision 1.1Jul 16, 2014Group: Database references

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Structure visualization

Structure viewerMolecule:
MolmilJmol/JSmol

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Assembly

Deposited unit
A: Bacteriorhodopsin
B: Bacteriorhodopsin
hetero molecules


Theoretical massNumber of molelcules
Total (without water)54,5385
Polymers53,7992
Non-polymers7393
Water19811
1
A: Bacteriorhodopsin
hetero molecules


Theoretical massNumber of molelcules
Total (without water)27,1842
Polymers26,8991
Non-polymers2841
Water181
TypeNameSymmetry operationNumber
identity operation1_555x,y,z1
2
B: Bacteriorhodopsin
hetero molecules


Theoretical massNumber of molelcules
Total (without water)27,3543
Polymers26,8991
Non-polymers4552
Water181
TypeNameSymmetry operationNumber
identity operation1_555x,y,z1
3


  • Idetical with deposited unit
  • defined by software
TypeNameSymmetry operationNumber
identity operation1_555x,y,z1
Buried area3450 Å2
ΔGint-23 kcal/mol
Surface area18810 Å2
MethodPISA
Unit cell
Length a, b, c (Å)45.347, 108.671, 56.182
Angle α, β, γ (deg.)90.00, 113.56, 90.00
Int Tables number4
Space group name H-MP1211

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Components

#1: Protein Bacteriorhodopsin / BR / Bacterioopsin / BO


Mass: 26899.473 Da / Num. of mol.: 2 / Mutation: T46A
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Halobacterium sp. (Halophile) / Strain: ATCC 700922 / JCM 11081 / NRC-1 / Gene: bop, VNG_1467G / Production host: Halobacterium salinarum (Halophile) / Strain (production host): L33 / References: UniProt: P02945
#2: Chemical ChemComp-RET / RETINAL


Mass: 284.436 Da / Num. of mol.: 2 / Source method: obtained synthetically / Formula: C20H28O
#3: Chemical ChemComp-D12 / DODECANE


Mass: 170.335 Da / Num. of mol.: 1 / Source method: obtained synthetically / Formula: C12H26
#4: Water ChemComp-HOH / water


Mass: 18.015 Da / Num. of mol.: 11 / 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: 1

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Sample preparation

CrystalDensity Matthews: 2.36 Å3/Da / Density % sol: 47.85 %
Crystal growTemperature: 310 K / Method: bicelles, vapor diffusion, hanging drop / pH: 4
Details: 0.65M sodium phosphate, 0.95% triethylene glycerol, 0.008M 1,6-hexanediol, 4.3% DMPC, 1.5% CHAPSO, BICELLES, VAPOR DIFFUSION, HANGING DROP, temperature 310K

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Data collection

DiffractionMean temperature: 100 K
Diffraction sourceSource: SYNCHROTRON / Site: APS / Beamline: 24-ID-C / Wavelength: 0.9792 Å
DetectorType: ADSC QUANTUM 315 / Detector: CCD / Date: Feb 22, 2010
RadiationMonochromator: Si(111) / Protocol: SINGLE WAVELENGTH / Monochromatic (M) / Laue (L): M / Scattering type: x-ray
Radiation wavelengthWavelength: 0.9792 Å / Relative weight: 1
ReflectionResolution: 2.47→90 Å / Num. all: 18034 / Num. obs: 18034 / % possible obs: 100 % / Observed criterion σ(F): 0 / Observed criterion σ(I): 0
Reflection shellResolution: 2.47→2.56 Å / % possible all: 99.8

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Processing

Software
NameVersionClassification
ADSCQuantumdata collection
PHASESphasing
CNS1.3refinement
DENZOdata reduction
SCALEPACKdata scaling
RefinementMethod to determine structure: MOLECULAR REPLACEMENT / Resolution: 2.47→51.5 Å / σ(F): 0 / Stereochemistry target values: MAXIMUM LIKELIHOOD
RfactorNum. reflectionSelection details
Rfree0.249 939 RANDOM
Rwork0.2086 --
all0.2107 17949 -
obs0.2107 17808 -
Refinement stepCycle: LAST / Resolution: 2.47→51.5 Å
ProteinNucleic acidLigandSolventTotal
Num. atoms3508 0 52 11 3571
Refine LS restraints
Refine-IDTypeDev ideal
X-RAY DIFFRACTIONc_angle_deg1.748
X-RAY DIFFRACTIONc_bond_d0.01

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