4CQ0

Cyclic secondary sulfonamides: unusually good inhibitors of cancer- related carbonic anhydrase enzymes


X-RAY DIFFRACTION

Starting Model(s)

Initial Refinement Model(s)
TypeSourceAccession CodeDetails
experimental modelPDB 3ML2PDB ENTRY 3ML2

Crystallization

Crystalization Experiments
IDMethodpHTemperatureDetails
18.5293THE PROTEIN WAS AT 14 MG/ML. THE RESERVOIR WAS 2.9 M AMMONIUM SULFATE, 100 MM TRIS PH 8.5. THE DROPS WERE 210 NL PROTEIN PLUS 110 NL RESERVOIR PLUS 40 NL COMPOUND. THE CRYSTALS GREW AT 20C.
Crystal Properties
Matthews coefficientSolvent content
2.1141.7

Crystal Data

Unit Cell
Length ( Å )Angle ( ˚ )
a = 42.183α = 90
b = 41.21β = 104.64
c = 71.919γ = 90
Symmetry
Space GroupP 1 21 1

Diffraction

Diffraction Experiment
ID #Crystal IDScattering TypeData Collection TemperatureDetectorDetector TypeDetailsCollection DateMonochromatorProtocol
11x-ray100CCDADSC CCD2011-12-13MSINGLE WAVELENGTH
Radiation Source
ID #SourceTypeWavelength ListSynchrotron SiteBeamline
1SYNCHROTRONAUSTRALIAN SYNCHROTRON BEAMLINE MX2Australian SynchrotronMX2

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
11.457098.80.112.87.342055
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)
11.451.5397.40.623.67

Refinement

Statistics
Diffraction IDStructure Solution MethodCross Validation methodStarting modelResolution (High)Resolution (Low)Number Reflections (Observed)Number Reflections (R-Free)Percent Reflections (Observed)R-Factor (Observed)R-WorkR-FreeR-Free Selection DetailsMean Isotropic B
X-RAY DIFFRACTIONMOLECULAR REPLACEMENTTHROUGHOUTPDB ENTRY 3ML21.4540.8539921211898.550.159030.157320.19106RANDOM11.893
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]
0.05-0.10.01-0.03
RMS Deviations
KeyRefinement Restraint Deviation
r_dihedral_angle_2_deg36.061
r_dihedral_angle_4_deg19.878
r_dihedral_angle_3_deg12.765
r_dihedral_angle_1_deg6.958
r_long_range_B_other5.155
r_long_range_B_refined5.154
r_scangle_other4.028
r_scbond_it2.807
r_scbond_other2.794
r_angle_refined_deg2.439
RMS Deviations
KeyRefinement Restraint Deviation
r_dihedral_angle_2_deg36.061
r_dihedral_angle_4_deg19.878
r_dihedral_angle_3_deg12.765
r_dihedral_angle_1_deg6.958
r_long_range_B_other5.155
r_long_range_B_refined5.154
r_scangle_other4.028
r_scbond_it2.807
r_scbond_other2.794
r_angle_refined_deg2.439
r_mcangle_it2.384
r_mcangle_other2.383
r_mcbond_other1.709
r_mcbond_it1.708
r_angle_other_deg1.048
r_chiral_restr0.159
r_bond_refined_d0.025
r_gen_planes_refined0.014
r_bond_other_d0.007
r_gen_planes_other0.003
r_nbd_refined
r_nbd_other
r_nbtor_refined
r_nbtor_other
r_xyhbond_nbd_refined
r_xyhbond_nbd_other
r_metal_ion_refined
r_metal_ion_other
r_symmetry_vdw_refined
r_symmetry_vdw_other
r_symmetry_hbond_refined
r_symmetry_hbond_other
r_symmetry_metal_ion_refined
r_symmetry_metal_ion_other
r_scangle_it
r_rigid_bond_restr
r_sphericity_free
r_sphericity_bonded
Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen AtomsNumber
Protein Atoms2039
Nucleic Acid Atoms
Solvent Atoms244
Heterogen Atoms17

Software

Software
Software NamePurpose
REFMACrefinement
XDSdata reduction
SCALAdata scaling
PHASERphasing