1RWO

Crystal structure of human caspase-1 in complex with 4-oxo-3-{6-[4-(quinoxalin-2-ylamino)-benzoylamino]-2-thiophen-2-yl-hexanoylamino}-pentanoic acid


X-RAY DIFFRACTION

Crystallization

Crystalization Experiments
IDMethodpHTemperatureDetails
1VAPOR DIFFUSION, HANGING DROP62780.1M PIPES, 200mM Li2SO4, 25% PEG2K MME, 10mM DTT, 3mM NaN3, 2mM MgCl2, pH 6.0, VAPOR DIFFUSION, HANGING DROP, temperature 278K
Crystal Properties
Matthews coefficientSolvent content
2.6753.86

Crystal Data

Unit Cell
Length ( Å )Angle ( ˚ )
a = 63.184α = 90
b = 63.184β = 90
c = 160.931γ = 90
Symmetry
Space GroupP 43 21 2

Diffraction

Diffraction Experiment
ID #Crystal IDScattering TypeData Collection TemperatureDetectorDetector TypeDetailsCollection DateMonochromatorProtocol
11x-ray180IMAGE PLATE2003-01-31MSINGLE WAVELENGTH
Radiation Source
ID #SourceTypeWavelength ListSynchrotron SiteBeamline
1SYNCHROTRONSSRL BEAMLINE BL7-11.08SSRLBL7-1

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
12.12097.80.07419365
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)
12.12.1789.20.204

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 ID 1ICE2.120193651831798897.460.199740.197480.2418RANDOM21.752
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]
0.620.62-1.24
RMS Deviations
KeyRefinement Restraint Deviation
r_dihedral_angle_1_deg5.102
r_scangle_it2.43
r_mcangle_it2.32
r_scbond_it1.529
r_mcbond_it1.298
r_angle_refined_deg0.899
r_nbd_refined0.162
r_symmetry_vdw_refined0.151
r_symmetry_hbond_refined0.099
r_xyhbond_nbd_refined0.081
RMS Deviations
KeyRefinement Restraint Deviation
r_dihedral_angle_1_deg5.102
r_scangle_it2.43
r_mcangle_it2.32
r_scbond_it1.529
r_mcbond_it1.298
r_angle_refined_deg0.899
r_nbd_refined0.162
r_symmetry_vdw_refined0.151
r_symmetry_hbond_refined0.099
r_xyhbond_nbd_refined0.081
r_chiral_restr0.058
r_bond_refined_d0.006
r_gen_planes_refined0.002
Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen AtomsNumber
Protein Atoms2069
Nucleic Acid Atoms
Solvent Atoms228
Heterogen Atoms41

Software

Software
Software NamePurpose
REFMACrefinement
MOSFLMdata reduction
d*TREKdata scaling
AMoREphasing