2IS0

Crystal structure of human Beta-secretase complexed with inhibitor


X-RAY DIFFRACTION

Starting Model(s)

Initial Refinement Model(s)
TypeSourceAccession CodeDetails
experimental modelPDB 1TQFPDB ENTRY 1TQF

Crystallization

Crystalization Experiments
IDMethodpHTemperatureDetails
17.52981.5M Lithium sulfate, 0.1M HEPES buffer, pH 7.5, VAPOR DIFFUSION, SITTING DROP, temperature 298K, pH 7.50
Crystal Properties
Matthews coefficientSolvent content
2.8356.49

Crystal Data

Unit Cell
Length ( Å )Angle ( ˚ )
a = 104.67α = 90
b = 127.91β = 90
c = 76.12γ = 90
Symmetry
Space GroupC 2 2 21

Diffraction

Diffraction Experiment
ID #Crystal IDScattering TypeData Collection TemperatureDetectorDetector TypeDetailsCollection DateMonochromatorProtocol
11x-ray100IMAGE PLATERIGAKU RAXIS IV2003-10-24MSINGLE WAVELENGTH
Radiation Source
ID #SourceTypeWavelength ListSynchrotron SiteBeamline
1ROTATING ANODERIGAKU RU3001.5418

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
12.249.1796.50.1144.26.8834891336613
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)
2.22.2895.60.3861.56.7

Refinement

Statistics
Diffraction IDStructure Solution MethodStarting modelResolution (High)Resolution (Low)Number Reflections (All)Number Reflections (Observed)Number Reflections (R-Free)Percent Reflections (Observed)R-WorkR-FreeMean Isotropic B
X-RAY DIFFRACTIONMOLECULAR REPLACEMENTPDB ENTRY 1TQF2.263233332333322596.60.2350.271
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
c_dihedral_angle_d25.5
c_angle_deg1.5
c_improper_angle_d0.88
c_bond_d0.008
Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen AtomsNumber
Protein Atoms2979
Nucleic Acid Atoms
Solvent Atoms247
Heterogen Atoms39

Software

Software
Software NamePurpose
CNXrefinement
d*TREKdata reduction
d*TREKdata scaling
CNXphasing