4XE1

Human carbonic anhydrase II in complex with 6-SULFAMOYL-SACCHARIN


X-RAY DIFFRACTION

Starting Model(s)

Initial Refinement Model(s)
TypeSourceAccession CodeDetails
experimental modelPDB 1CA2 

Crystallization

Crystalization Experiments
IDMethodpHTemperatureDetails
1VAPOR DIFFUSION, HANGING DROP293AMMONIUM SULPHATE 2.6M, TRIS-HCL 0.1M, SODIUM CHLORIDE 0.3M, 4-HYDROXYMERCURYBENZOATE
Crystal Properties
Matthews coefficientSolvent content
2.0740.7

Crystal Data

Unit Cell
Length ( Å )Angle ( ˚ )
a = 42.212α = 90
b = 41.68β = 104.33
c = 71.731γ = 90
Symmetry
Space GroupP 1 21 1

Diffraction

Diffraction Experiment
ID #Crystal IDScattering TypeData Collection TemperatureDetectorDetector TypeDetailsCollection DateMonochromatorProtocol
11x-ray100CCDRIGAKU SATURN 9442013-12-10MSINGLE WAVELENGTH
Radiation Source
ID #SourceTypeWavelength ListSynchrotron SiteBeamline
1ROTATING ANODERIGAKU1.54178

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
11.82099.10.04721.23.822414
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)
11.81.8692.90.1017.42.1

Refinement

Statistics
Diffraction IDStructure Solution MethodCross Validation methodStarting modelResolution (High)Resolution (Low)Number Reflections (Observed)Number Reflections (R-Free)Percent Reflections (Observed)R-WorkR-FreeR-Free Selection DetailsMean Isotropic B
X-RAY DIFFRACTIONFOURIER SYNTHESISFREE R-VALUE1CA21.82022116107397.70.1680.214Random selection14.2
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]
0.586-0.486-2.6942.108
RMS Deviations
KeyRefinement Restraint Deviation
c_scangle_it2.615
c_scbond_it1.813
c_mcangle_it1.683
c_angle_d1.6
c_mcbond_it1.19
c_bond_d0.01
Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen AtomsNumber
Protein Atoms2059
Nucleic Acid Atoms
Solvent Atoms219
Heterogen Atoms39

Software

Software
Software NamePurpose
HKL-2000data reduction
CNSrefinement
PDB_EXTRACTdata extraction
SCALEPACKdata scaling
Omodel building