4C3T

The Carbonic anhydrase from Thermovibrio ammonificans reveals an interesting intermolecular disulfide contributing to increasing thermal stability of this enzyme


X-RAY DIFFRACTION

Starting Model(s)

Initial Refinement Model(s)
TypeSourceAccession CodeDetails
experimental modelPDB 1KOPPDB ENTRY 1KOP

Crystallization

Crystalization Experiments
IDMethodpHTemperatureDetails
10.5 M LICL, 50 MM SODIUM CITRATE, 10% PEG6000, PH 4.0
Crystal Properties
Matthews coefficientSolvent content
2.2846.03

Crystal Data

Unit Cell
Length ( Å )Angle ( ˚ )
a = 80.93α = 90
b = 80.93β = 90
c = 154.62γ = 90
Symmetry
Space GroupP 43 21 2

Diffraction

Diffraction Experiment
ID #Crystal IDScattering TypeData Collection TemperatureDetectorDetector TypeDetailsCollection DateMonochromatorProtocol
11x-ray100 MSINGLE WAVELENGTH
Radiation Source
ID #SourceTypeWavelength ListSynchrotron SiteBeamline
1SYNCHROTRONDIAMOND BEAMLINE I03DiamondI03

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
11.6980.931000.0718.612.77344242
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)
11.691.741001.232.312.3

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 1KOP1.6957.2354946294199.970.222840.22130.25175RANDOM36.284
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]
0.430.43-0.87
RMS Deviations
KeyRefinement Restraint Deviation
r_dihedral_angle_2_deg33.446
r_dihedral_angle_4_deg15.307
r_dihedral_angle_3_deg13.689
r_long_range_B_refined7.816
r_dihedral_angle_1_deg5.847
r_mcangle_it5.091
r_scbond_it4.753
r_mcbond_it4.114
r_angle_refined_deg1.241
r_chiral_restr0.086
RMS Deviations
KeyRefinement Restraint Deviation
r_dihedral_angle_2_deg33.446
r_dihedral_angle_4_deg15.307
r_dihedral_angle_3_deg13.689
r_long_range_B_refined7.816
r_dihedral_angle_1_deg5.847
r_mcangle_it5.091
r_scbond_it4.753
r_mcbond_it4.114
r_angle_refined_deg1.241
r_chiral_restr0.086
r_bond_refined_d0.007
r_gen_planes_refined0.005
r_bond_other_d
r_angle_other_deg
r_gen_planes_other
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_mcbond_other
r_mcangle_other
r_scbond_other
r_scangle_it
r_scangle_other
r_long_range_B_other
r_rigid_bond_restr
r_sphericity_free
r_sphericity_bonded
Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen AtomsNumber
Protein Atoms3626
Nucleic Acid Atoms
Solvent Atoms291
Heterogen Atoms4

Software

Software
Software NamePurpose
REFMACrefinement
MOLREPphasing