1J8A

CRYSTAL STRUCTURE OF BENZAMIDINE INHIBITED BOVINE PANCREATIC TRYPSIN AT 105K TO 1.21A RESOLUTION FROM LABORATORY SOURCE WITH HIGH NUMBER OF WATERS MODELLED


X-RAY DIFFRACTION

Starting Model(s)

Initial Refinement Model(s)
TypeSourceAccession CodeDetails
experimental modelPDB 5PTPPDB ENTRY 5PTP

Crystallization

Crystalization Experiments
IDMethodpHTemperatureDetails
1VAPOR DIFFUSION, HANGING DROP7.4293.15PEG 6000, ammonium sulfate, tris-HCl, benzamidine, calcium chloride, pH 7.4, VAPOR DIFFUSION, HANGING DROP, temperature 293.15K
Crystal Properties
Matthews coefficientSolvent content
2.2545.42

Crystal Data

Unit Cell
Length ( Å )Angle ( ˚ )
a = 54.275α = 90
b = 58.568β = 90
c = 66.141γ = 90
Symmetry
Space GroupP 21 21 21

Diffraction

Diffraction Experiment
ID #Crystal IDScattering TypeData Collection TemperatureDetectorDetector TypeDetailsCollection DateMonochromatorProtocol
11x-ray105ENRAF-NONIUSENRAF-NONIUS2000-06-09MSINGLE WAVELENGTH
Radiation Source
ID #SourceTypeWavelength ListSynchrotron SiteBeamline
1ROTATING ANODEENRAF-NONIUS FR590

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
11.219.997.40.06113.210.5648596485911.6
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)
11.21.2477.10.4291.52.16239

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 (All)R-Factor (Observed)R-WorkR-FreeR-Free Selection DetailsMean Isotropic B
X-RAY DIFFRACTIONMOLECULAR REPLACEMENTTHROUGHOUTPDB ENTRY 5PTP1.2119.96454664546327399.40.1610.1610.160.178RANDOM9.5
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]
-8.10.6740.138
RMS Deviations
KeyRefinement Restraint Deviation
c_dihedral_angle_deg25.877
c_scangle_it1.908
c_angle_deg1.574
c_scbond_it1.453
c_mcangle_it1.077
c_improper_angle_deg1.023
c_mcbond_it0.753
c_bond_d0.00839
Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen AtomsNumber
Protein Atoms1629
Nucleic Acid Atoms
Solvent Atoms385
Heterogen Atoms45

Software

Software
Software NamePurpose
DENZOdata reduction
SCALEPACKdata scaling
AMoREphasing
CNSrefinement