5JGS

Human carbonic anhydrase II (F131Y/L198A) complexed with benzo[d]thiazole-2-sulfonamide


X-RAY DIFFRACTION

Starting Model(s)

Initial Refinement Model(s)
TypeSourceAccession CodeDetails
experimental modelPDB 3S73 

Crystallization

Crystalization Experiments
IDMethodpHTemperatureDetails
1VAPOR DIFFUSION, HANGING DROP277.15We soaked monoclinic crystals of HCAII with BTA (EVF) by carrying out the following steps: (i) We prepared soaking solutions containing 1.32 M sodium citrate, 1 mM ZnSO4, 100 mM Tris-HCl (pH 7.8), and 5 mM ligand. (ii) We combined 4 uL of soaking solution and 1-2 crystals of HCAII within a drop on the surface of a reservoir cover (EasyXtal CrystalSupport, Qiagen). (iii) To a clear plastic reservoir in a 15-reservoir plate (EasyXtal, Qiagen), we added 1 mL of soaking solution (without ligand present). We attached the reservoir cover to the reservoir and left the entire setup at 4 deg C for 1 week.
Crystal Properties
Matthews coefficientSolvent content
2.1242.07

Crystal Data

Unit Cell
Length ( Å )Angle ( ˚ )
a = 42.35α = 90
b = 41.88β = 104.63
c = 72.06γ = 90
Symmetry
Space GroupP 1 21 1

Diffraction

Diffraction Experiment
ID #Crystal IDScattering TypeData Collection TemperatureDetectorDetector TypeDetailsCollection DateMonochromatorProtocol
11x-ray100CCDADSC QUANTUM 315r2015-04-15MSINGLE WAVELENGTH
Radiation Source
ID #SourceTypeWavelength ListSynchrotron SiteBeamline
1SYNCHROTRONALS BEAMLINE 8.2.11.1ALS8.2.1

Data Collection

Overall
ID #Resolution (High)Resolution (Low)Percent Possible (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
11.1140.01874.6515.83.7141290

Refinement

Statistics
Diffraction IDStructure Solution MethodCross Validation methodStarting modelResolution (High)Resolution (Low)Cut-off Sigma (F)Number Reflections (Observed)Number Reflections (R-Free)Percent Reflections (Observed)R-Factor (Observed)R-WorkR-FreeMean Isotropic B
X-RAY DIFFRACTIONMOLECULAR REPLACEMENTFREE R-VALUE3S731.1140.0181.35141290366674.650.11930.11890.1314
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
f_dihedral_angle_d13.012
f_angle_d1.364
f_chiral_restr0.083
f_bond_d0.011
f_plane_restr0.008
Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen AtomsNumber
Protein Atoms2072
Nucleic Acid Atoms
Solvent Atoms444
Heterogen Atoms1

Software

Software
Software NamePurpose
PHENIXrefinement
xia2data reduction
PHASERphasing
xia2data scaling