2ANW

Expression, crystallization and three-dimensional structure of the catalytic domain of human plasma kallikrein: Implications for structure-based design of protease inhibitors


X-RAY DIFFRACTION

Starting Model(s)

Initial Refinement Model(s)
TypeSourceAccession CodeDetails
experimental modelPDB 1P57hepsin, PDB ENTRY 1P57

Crystallization

Crystalization Experiments
IDMethodpHTemperatureDetails
1VAPOR DIFFUSION, HANGING DROP6.52900.5 microliter of the protein solution and 0.5 microliter of the reservoir solution (25% PEG 6000 , 0.10 M MES pH 6.5)., VAPOR DIFFUSION, HANGING DROP, temperature 290.0K
Crystal Properties
Matthews coefficientSolvent content
2.3447.5

Crystal Data

Unit Cell
Length ( Å )Angle ( ˚ )
a = 79.886α = 90
b = 63.19β = 90
c = 50.313γ = 90
Symmetry
Space GroupP 21 21 2

Diffraction

Diffraction Experiment
ID #Crystal IDScattering TypeData Collection TemperatureDetectorDetector TypeDetailsCollection DateMonochromatorProtocol
11x-ray138CCDADSC QUANTUM 3152004-07-22MSINGLE WAVELENGTH
Radiation Source
ID #SourceTypeWavelength ListSynchrotron SiteBeamline
1SYNCHROTRONALS BEAMLINE 5.0.21.000ALS5.0.2

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
11.852099.30.04924.46.92231322313

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 REPLACEMENTTHROUGHOUThepsin, PDB ENTRY 1P571.8572118421184212399.40.22110.22110.2210.283RANDOM
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
x_dihedral_angle_d26.6
x_angle_deg3.2
x_bond_d0.018
Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen AtomsNumber
Protein Atoms2321
Nucleic Acid Atoms
Solvent Atoms642
Heterogen Atoms18

Software

Software
Software NamePurpose
DENZOdata reduction
XTALVIEWrefinement
X-PLORrefinement
SCALEPACKdata scaling