2BRD

CRYSTAL STRUCTURE OF BACTERIORHODOPSIN IN PURPLE MEMBRANE


ELECTRON CRYSTALLOGRAPHY

Crystallization

Crystal Properties
Matthews coefficientSolvent content
4.2470.97

Crystal Data

Unit Cell
Length ( Å )Angle ( ˚ )
a = 62.45α = 90
b = 62.45β = 90
c = 100.9γ = 120
Symmetry
Space GroupP 3

Diffraction

Diffraction Experiment
ID #Crystal IDScattering TypeData Collection TemperatureDetectorDetector TypeDetailsCollection DateMonochromatorProtocol
11electronFILM1986-01-01M
Radiation Source
ID #SourceTypeWavelength ListSynchrotron SiteBeamline
1

Data Collection

Overall
ID #Resolution (High)Resolution (Low)Percent Possible (Observed)R Merge I (Observed)Net I Over Average Sigma (I)RedundancyNumber Reflections (All)Number Reflections (Observed)Observed Criterion Sigma (F)Observed Criterion Sigma (I)B (Isotropic) From Wilson Plot
12.85462.30.15186750

Refinement

Statistics
Diffraction IDStructure Solution MethodResolution (High)Resolution (Low)Number Reflections (Observed)Number Reflections (R-Free)Percent Reflections (Observed)R-WorkR-FreeMean Isotropic B
ELECTRON CRYSTALLOGRAPHY3.530474385.40.28114
Temperature Factor Modeling
Anisotropic B[1][1]Anisotropic B[1][2]Anisotropic B[1][3]Anisotropic B[2][2]Anisotropic B[2][3]Anisotropic B[3][3]
RMS Deviations
KeyRefinement Restraint Deviation
p_transverse_tor36.1
p_staggered_tor20.4
p_planar_tor0.865
p_multtor_nbd0.242
p_singtor_nbd0.185
p_xyhbond_nbd0.127
p_chiral_restr0.086
p_planar_d0.022
p_angle_d0.02
p_bond_d0.005
RMS Deviations
KeyRefinement Restraint Deviation
p_transverse_tor36.1
p_staggered_tor20.4
p_planar_tor0.865
p_multtor_nbd0.242
p_singtor_nbd0.185
p_xyhbond_nbd0.127
p_chiral_restr0.086
p_planar_d0.022
p_angle_d0.02
p_bond_d0.005
p_plane_restr0.005
p_angle_deg
p_hb_or_metal_coord
p_mcbond_it
p_mcangle_it
p_scbond_it
p_scangle_it
p_xhyhbond_nbd
p_orthonormal_tor
p_special_tor
Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen AtomsNumber
Protein Atoms1718
Nucleic Acid Atoms
Solvent Atoms
Heterogen Atoms610

Software

Software
Software NamePurpose
PROLSQrefinement
PICKYCORdata reduction
ANdata reduction
Sample
BACTERIORHODOPSIN CRYSTAL
Specimen Preparation
Sample Aggregation State2D ARRAY
3D Reconstruction
Reconstruction MethodCRYSTALLOGRAPHY
Number of Particles
Reported Resolution (Å)
Resolution Method
Other Details
Refinement Type
Symmetry Type2D CRYSTAL
Data Acquisition
Detector TypeGENERIC FILMGENERIC FILMGENERIC FILM
Electron Dose (electrons/Å**2)2015
Imaging Experiment123
Date of Experiment
Temperature (Kelvin)
Microscope ModelFEI/PHILIPS EM420SIEMENS SULEIKAJEOL 100B
Minimum Defocus (nm)
Maximum Defocus (nm)
Minimum Tilt Angle (degrees)
Maximum Tilt Angle (degrees)
Nominal CS
Imaging ModeDIFFRACTIONBRIGHT FIELDBRIGHT FIELD
Specimen Holder Model
Nominal Magnification6600055000
Calibrated Magnification
SourceFIELD EMISSION GUN
Acceleration Voltage (kV)120100100
Imaging Details60 degree tilted specimens0, 20, 45 degree + random degree tilts, 20, 45 degree + random degree tilts