X-RAY DIFFRACTION

Crystallization

Crystalization Experiments
IDMethodpHTemperatureDetails
1EVAPORATION7294LYOPHILIZED MERSACIDIN WAS DISSOLVED TO SATURATION IN METHANOL. CRYSTALS GREW AT ROOM TEMPERATURE BY SLOW EVAPORATION OF METHANOL FROM A 1:1 MIXTURE OF THE SATURATED SOLUTION WITH BENZENE AND REACHED A MAXIMUM SIZE OF 0.3 X 0.3 X 0.3 MM IN 10 DAYS., pH 7.00
Crystal Properties
Matthews coefficientSolvent content
1.7328.84

Crystal Data

Unit Cell
Length ( Å )Angle ( ˚ )
a = 46.09α = 90
b = 46.09β = 90
c = 31.02γ = 120
Symmetry
Space GroupP 32

Diffraction

Diffraction Experiment
ID #Crystal IDScattering TypeData Collection TemperatureDetectorDetector TypeDetailsCollection DateMonochromatorProtocol
11x-ray100IMAGE PLATEMARRESEARCH1994-10-15MSINGLE WAVELENGTH
Radiation Source
ID #SourceTypeWavelength ListSynchrotron SiteBeamline
1SYNCHROTRONEMBL/DESY, HAMBURG BEAMLINE BW7BEMBL/DESY, HAMBURGBW7B

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
11.0639.91000.04914.94.933469
Highest Resolution Shell
ID #Resolution (High)Resolution (Low)Percent Possible (All)Percent Possible (Observed)R Merge I (Observed)Mean I Over Sigma (Observed)RedundancyNumber Unique Reflections (All)
11.061.0899.60.36432.9

Refinement

Statistics
Diffraction IDStructure Solution MethodCross Validation methodResolution (High)Resolution (Low)Number Reflections (All)Number Reflections (R-Free)Percent Reflections (Observed)R-Factor (All)R-Factor (Observed)R-WorkR-FreeR-Free Selection DetailsMean Isotropic B
X-RAY DIFFRACTIONHALF-BAKEDFREE R-VALUE1.06403344999.90.14140.1414RANDOM
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]
Coordinate Error
Structure Solution MethodRefinement High ResolutionRefinement Low Resolution
719826
RMS Deviations
KeyRefinement Restraint Deviation
s_zero_chiral_vol0.069
s_approx_iso_adps0.068
s_non_zero_chiral_vol0.061
s_similar_adp_cmpnt0.052
s_angle_d0.034
s_from_restr_planes0.027
s_similar_dist0.017
s_anti_bump_dis_restr0.016
s_bond_d0.013
s_rigid_bond_adp_cmpnt0.005
Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen AtomsNumber
Protein Atoms750
Nucleic Acid Atoms
Solvent Atoms57
Heterogen Atoms18

Software

Software
Software NamePurpose
SHELXL-97refinement
DENZOdata reduction
SCALEPACKdata scaling
SHELXL-97phasing