1QTN

CRYSTAL STRUCTURE OF THE COMPLEX OF CASPASE-8 WITH THE TETRAPEPTIDE INHIBITOR ACE-IETD-ALDEHYDE


X-RAY DIFFRACTION

Starting Model(s)

Initial Refinement Model(s)
TypeSourceAccession CodeDetails
experimental modelPDB 1CP3 

Crystallization

Crystalization Experiments
IDMethodpHTemperatureDetails
1VAPOR DIFFUSION, SITTING DROP82823 MICROLITERS PROTEIN (8.4 MG/ ML IN 20 MM TRISHCL, 100MM DTT AT PH 8.0) MIXED WITH 3 MICROLITERS WELL BUFFER (1.4 SODIUM CITRATE, 0.1M HEPES, AT PH 8.0) AT 4 DEG. C, VAPOR DIFFUSION, SITTING DROP, temperature 282K
Crystal Properties
Matthews coefficientSolvent content
2.4249.13

Crystal Data

Unit Cell
Length ( Å )Angle ( ˚ )
a = 62.4α = 90
b = 62.4β = 90
c = 129.25γ = 120
Symmetry
Space GroupP 31 2 1

Diffraction

Diffraction Experiment
ID #Crystal IDScattering TypeData Collection TemperatureDetectorDetector TypeDetailsCollection DateMonochromatorProtocol
11x-ray105CCDBRUKERNON-FOCUSING1998-09-09MSINGLE WAVELENGTH
Radiation Source
ID #SourceTypeWavelength ListSynchrotron SiteBeamline
1SYNCHROTRONAPS BEAMLINE 17-IDAPS17-ID

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
11.220870.0683.7379890
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)
11.21.24820.262.35

Refinement

Statistics
Diffraction IDStructure Solution MethodStarting modelResolution (High)Resolution (Low)Cut-off Sigma (F)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 DIFFRACTIONMR1CP31.28475433606713981870.1660.1660.1430.1880.53% OF REFLECTIONS
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
s_angle_d0.2
s_from_restr_planes0.2
s_zero_chiral_vol0.2
s_bond_d0.02
s_similar_dist
s_non_zero_chiral_vol
s_anti_bump_dis_restr
s_rigid_bond_adp_cmpnt
s_similar_adp_cmpnt
s_approx_iso_adps
Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen AtomsNumber
Protein Atoms1971
Nucleic Acid Atoms
Solvent Atoms332
Heterogen Atoms16

Software

Software
Software NamePurpose
AMoREphasing
SHELXL-97refinement
SMARTdata reduction
SAINTdata scaling