2HBZ

Crystal structure of human caspase-1 (Arg286->Ala, Glu390->Ala) in complex with 3-[2-(2-benzyloxycarbonylamino-3-methyl-butyrylamino)-propionylamino]-4-oxo-pentanoic acid (z-VAD-FMK)


X-RAY DIFFRACTION

Starting Model(s)

Initial Refinement Model(s)
TypeSourceAccession CodeDetails
experimental modelPDB 1SC3PDB ENTRY 1SC3

Crystallization

Crystalization Experiments
IDMethodpHTemperatureDetails
1VAPOR DIFFUSION, HANGING DROP62770.1 M Pipes, 100 MM LI2SO4, 25% PEG 2000 MME, 10 MM DTT, 3 MM NAN3, 2 MM MGCL2, pH 6.00, VAPOR DIFFUSION, HANGING DROP, temperature 277K
Crystal Properties
Matthews coefficientSolvent content
2.3748.12

Crystal Data

Unit Cell
Length ( Å )Angle ( ˚ )
a = 63.245α = 90
b = 63.245β = 90
c = 142.241γ = 90
Symmetry
Space GroupP 43 21 2

Diffraction

Diffraction Experiment
ID #Crystal IDScattering TypeData Collection TemperatureDetectorDetector TypeDetailsCollection DateMonochromatorProtocol
11x-ray110IMAGE PLATERIGAKU RAXIS IV2005-04-20MSINGLE WAVELENGTH
Radiation Source
ID #SourceTypeWavelength ListSynchrotron SiteBeamline
1ROTATING ANODERIGAKU RU3001.54

Data Collection

Overall
ID #Resolution (High)Resolution (Low)Percent Possible (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
11.92091.72354015
Highest Resolution Shell
ID #Resolution (High)Resolution (Low)Percent Possible (All)Percent Possible (Observed)Mean I Over Sigma (Observed)RedundancyNumber Unique Reflections (All)
11.91.9796.3

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 1SC31.9202354020408110991.40.224760.2250.2230.249RANDOM19.14
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]
-0.36-0.360.72
RMS Deviations
KeyRefinement Restraint Deviation
r_dihedral_angle_1_deg5.263
r_scangle_it2.329
r_mcangle_it2.18
r_scbond_it1.484
r_mcbond_it1.307
r_angle_refined_deg0.899
r_nbd_refined0.162
r_symmetry_vdw_refined0.126
r_xyhbond_nbd_refined0.088
r_symmetry_hbond_refined0.067
RMS Deviations
KeyRefinement Restraint Deviation
r_dihedral_angle_1_deg5.263
r_scangle_it2.329
r_mcangle_it2.18
r_scbond_it1.484
r_mcbond_it1.307
r_angle_refined_deg0.899
r_nbd_refined0.162
r_symmetry_vdw_refined0.126
r_xyhbond_nbd_refined0.088
r_symmetry_hbond_refined0.067
r_chiral_restr0.062
r_bond_refined_d0.006
r_gen_planes_refined0.002
r_bond_other_d
r_angle_other_deg
r_dihedral_angle_2_deg
r_dihedral_angle_3_deg
r_dihedral_angle_4_deg
r_gen_planes_other
r_nbd_other
r_nbtor_refined
r_nbtor_other
r_xyhbond_nbd_other
r_metal_ion_refined
r_metal_ion_other
r_symmetry_vdw_other
r_symmetry_hbond_other
r_symmetry_metal_ion_refined
r_symmetry_metal_ion_other
r_mcbond_other
r_rigid_bond_restr
r_sphericity_free
r_sphericity_bonded
Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen AtomsNumber
Protein Atoms2011
Nucleic Acid Atoms
Solvent Atoms183
Heterogen Atoms

Software

Software
Software NamePurpose
CrystalCleardata collection
d*TREKdata reduction
AMoREphasing
REFMACrefinement
CrystalCleardata reduction
d*TREKdata scaling