5R48

Crystal Structure of gamma-Chymotrypsin at pH 5.6, room temperature


X-RAY DIFFRACTION

Crystallization

Crystalization Experiments
IDMethodpHTemperatureDetails
1VAPOR DIFFUSION, SITTING DROP29745% saturated ammonium sulfate, 0.75% saturated cetyltrimethylammonium bromide, 100 mM sodium iodide; sodium malonate
Crystal Properties
Matthews coefficientSolvent content
2.2545.29

Crystal Data

Unit Cell
Length ( Å )Angle ( ˚ )
a = 69.603α = 90
b = 69.603β = 90
c = 97.909γ = 90
Symmetry
Space GroupP 42 21 2

Diffraction

Diffraction Experiment
ID #Crystal IDScattering TypeData Collection TemperatureDetectorDetector TypeDetailsCollection DateMonochromatorProtocol
11x-ray100CCDMARMOSAIC 300 mm CCD2009-07-15MSINGLE WAVELENGTH
Radiation Source
ID #SourceTypeWavelength ListSynchrotron SiteBeamline
1SYNCHROTRONAPS BEAMLINE 23-ID-B0.9APS23-ID-B

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
11.055099.60.10913.139.3111717
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)
11.051.0996.20.7265

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 DIFFRACTIONFOURIER SYNTHESISTHROUGHOUT1GCT1.0556.73105632558998.920.1090.10840.1197RANDOM18.615
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]
0.070.07-0.15
RMS Deviations
KeyRefinement Restraint Deviation
r_dihedral_angle_2_deg35.681
r_sphericity_free27.552
r_dihedral_angle_3_deg11.332
r_dihedral_angle_4_deg8.494
r_sphericity_bonded7.566
r_dihedral_angle_1_deg6.668
r_rigid_bond_restr1.99
r_angle_other_deg1.541
r_angle_refined_deg1.507
r_chiral_restr0.1
RMS Deviations
KeyRefinement Restraint Deviation
r_dihedral_angle_2_deg35.681
r_sphericity_free27.552
r_dihedral_angle_3_deg11.332
r_dihedral_angle_4_deg8.494
r_sphericity_bonded7.566
r_dihedral_angle_1_deg6.668
r_rigid_bond_restr1.99
r_angle_other_deg1.541
r_angle_refined_deg1.507
r_chiral_restr0.1
r_bond_refined_d0.011
r_gen_planes_refined0.008
r_gen_planes_other0.004
r_bond_other_d0.001
Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen AtomsNumber
Protein Atoms1817
Nucleic Acid Atoms
Solvent Atoms166
Heterogen Atoms6

Software

Software
Software NamePurpose
HKL-2000data reduction
SCALEPACKdata scaling
REFMACrefinement
PDB_EXTRACTdata extraction
PHENIXphasing