1YPH

High resolution structure of bovine alpha-chymotrypsin


X-RAY DIFFRACTION

Crystallization

Crystalization Experiments
IDMethodpHTemperatureDetails
1VAPOR DIFFUSION, SITTING DROP4.2298PEG 1500, Ammonium sulphate, citrate, pH 4.2, VAPOR DIFFUSION, SITTING DROP, temperature 298K
Crystal Properties
Matthews coefficientSolvent content
2.0539.4

Crystal Data

Unit Cell
Length ( Å )Angle ( ˚ )
a = 43.83α = 90
b = 77.51β = 106.3
c = 62.77γ = 90
Symmetry
Space GroupP 1 21 1

Diffraction

Diffraction Experiment
ID #Crystal IDScattering TypeData Collection TemperatureDetectorDetector TypeDetailsCollection DateMonochromatorProtocol
11x-ray100IMAGE PLATEMARRESEARCHtriagular horizontal focusing Si (111) monochromator and bent mirror1997-11-20MSINGLE WAVELENGTH
Radiation Source
ID #SourceTypeWavelength ListSynchrotron SiteBeamline
1SYNCHROTRONEMBL/DESY, HAMBURG BEAMLINE X110.91EMBL/DESY, HAMBURGX11

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
11.3428.697.10.04719.62.9875808758015.1
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)
1.341.4195.90.4342.12.311767

Refinement

Statistics
Diffraction IDStructure Solution MethodCross Validation methodStarting modelResolution (High)Resolution (Low)Number Reflections (All)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 5CHA molecule B1.3428.68758087580439197.10.1390.1390.189RANDOM19.7
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
p_transverse_tor22.2
p_staggered_tor12.3
p_planar_tor5.1
p_scangle_it4.022
p_mcangle_it3.33
p_scbond_it3.038
p_mcbond_it2.531
p_multtor_nbd0.235
p_singtor_nbd0.157
p_chiral_restr0.094
RMS Deviations
KeyRefinement Restraint Deviation
p_transverse_tor22.2
p_staggered_tor12.3
p_planar_tor5.1
p_scangle_it4.022
p_mcangle_it3.33
p_scbond_it3.038
p_mcbond_it2.531
p_multtor_nbd0.235
p_singtor_nbd0.157
p_chiral_restr0.094
p_planar_d0.038
p_angle_d0.034
p_plane_restr0.027
p_bond_d0.014
p_special_tor
Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen AtomsNumber
Protein Atoms3657
Nucleic Acid Atoms
Solvent Atoms606
Heterogen Atoms25

Software

Software
Software NamePurpose
DENZOdata reduction
SCALEPACKdata scaling
AMoREphasing
REFMACrefinement