1C5Z

STRUCTURAL BASIS FOR SELECTIVITY OF A SMALL MOLECULE, S1-BINDING, SUB-MICROMOLAR INHIBITOR OF UROKINASE TYPE PLASMINOGEN ACTIVATOR


X-RAY DIFFRACTION

Starting Model(s)

Initial Refinement Model(s)
TypeSourceAccession CodeDetails
experimental modelPDB 1LMW 

Crystallization

Crystalization Experiments
IDMethodpHTemperatureDetails
16.5LMW human uPA/A145 was concentrated to 10 mg/ml and incubated in 50 mM HEPES, 5.0 mM NaCl. pH 7.0, 5.0 mM benzamidne for 15 min on ice. The complex was crystallized by vapor diffusion in hanging drops containing equal volumes of protein-inhibitor solution (0.28 mM uPA/A145, 1.4 mM inhibitor) and well solution (20 % 2-propanol, 20 % PEG 4K, 100 mM sodium citrate, pH 6.5) sealed over the well.
Crystal Properties
Matthews coefficientSolvent content
1.9925.6

Crystal Data

Unit Cell
Length ( Å )Angle ( ˚ )
a = 82.78α = 90
b = 49.05β = 113.68
c = 66.85γ = 90
Symmetry
Space GroupC 1 2 1

Diffraction

Diffraction Experiment
ID #Crystal IDScattering TypeData Collection TemperatureDetectorDetector TypeDetailsCollection DateMonochromatorProtocol
11x-ray298IMAGE PLATERIGAKU RAXIS IV++MSC MIRRORS1999-05-12MSINGLE WAVELENGTH
Radiation Source
ID #SourceTypeWavelength ListSynchrotron SiteBeamline
1

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
11.4838.25640.0934.51.8161391
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)
1.851.93310.212

Refinement

Statistics
Diffraction IDStructure Solution MethodCross Validation methodStarting modelResolution (High)Resolution (Low)Cut-off Sigma (F)Number Reflections (Observed)Number Reflections (R-Free)Percent Reflections (Observed)R-Factor (Observed)R-WorkR-FreeMean Isotropic B
X-RAY DIFFRACTIONDIFFERENCE FOURIER PLUS REFINEMENTX-PLORPDB1LMW1.857.51.913200134363.70.1850.1850.237
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_d24.4
x_angle_deg4
x_improper_angle_d0.41
x_bond_d0.018
Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen AtomsNumber
Protein Atoms4075
Nucleic Acid Atoms
Solvent Atoms1152
Heterogen Atoms72

Software

Software
Software NamePurpose
bioteXdata collection
bioteXdata reduction
X-PLORmodel building
Quantamodel building
Insight IImodel building
X-PLORrefinement
bioteXdata scaling
X-PLORphasing