3FKT
Crystal Structure of Human Beta Secretase Complexed with Spiropiperdine Iminohydantoin Inhibitor
X-RAY DIFFRACTION
Starting Model(s)
Initial Refinement Model(s) | |||
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Type | Source | Accession Code | Details |
experimental model | PDB | 1TQF |
Crystallization
Crystalization Experiments | ||||
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ID | Method | pH | Temperature | Details |
1 | VAPOR DIFFUSION | 5 | 293 | 1.5M LITHIUM SULFATE, 0.1M HEPES BUFFER, VAPOR DIFFUSION, SITTING DROP, TEMPERATURE 293K, PH 7.50. Crystals were grown with L124671 and spiropiperdine iminoh was back soaked in the crystal at pH 5.0, pH 5.00 |
Crystal Properties | |
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Matthews coefficient | Solvent content |
2.83 | 56.49 |
Crystal Data
Unit Cell | |
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Length ( Å ) | Angle ( ˚ ) |
a = 103.743 | α = 90 |
b = 128.042 | β = 90 |
c = 76.768 | γ = 90 |
Symmetry | |
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Space Group | C 2 2 21 |
Diffraction
Diffraction Experiment | ||||||||||||||
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ID # | Crystal ID | Scattering Type | Data Collection Temperature | Detector | Detector Type | Details | Collection Date | Monochromator | Protocol | |||||
1 | 1 | x-ray | 100 | IMAGE PLATE | RIGAKU RAXIS IV++ | M | SINGLE WAVELENGTH |
Radiation Source | |||||
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ID # | Source | Type | Wavelength List | Synchrotron Site | Beamline |
1 | ROTATING ANODE | RIGAKU MICROMAX-007 |
Data Collection
Overall | |||||||||||||||||||
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ID # | Resolution (High) | Resolution (Low) | Percent Possible (Observed) | R Sym I (Observed) | Net I Over Average Sigma (I) | Redundancy | Number Reflections (All) | Number Reflections (Observed) | Observed Criterion Sigma (F) | Observed Criterion Sigma (I) | B (Isotropic) From Wilson Plot | ||||||||
1 | 1.9 | 50 | 99.9 | 0.067 | 6.8 | 40623 |
Highest Resolution Shell | |||||||||||||||||||
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ID # | Resolution (High) | Resolution (Low) | Percent Possible (All) | Percent Possible (Observed) | R-Sym I (Observed) | Mean I Over Sigma (Observed) | Redundancy | Number Unique Reflections (All) | |||||||||||
1.9 | 1.97 | 99.8 | 0.568 | 2.4 | 6.3 |
Refinement
Statistics | |||||||||||||||||||
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Diffraction ID | Structure Solution Method | Cross Validation method | Starting model | Resolution (High) | Resolution (Low) | Number Reflections (Observed) | Number Reflections (R-Free) | Percent Reflections (Observed) | R-Factor (Observed) | R-Work | R-Free | R-Free Selection Details | Mean Isotropic B | ||||||
X-RAY DIFFRACTION | MOLECULAR REPLACEMENT | THROUGHOUT | 1TQF | 1.9 | 42.99 | 38567 | 2034 | 99.84 | 0.18332 | 0.1816 | 0.21663 | RANDOM | 32.33 |
Temperature Factor Modeling | ||||||
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Anisotropic B[1][1] | Anisotropic B[1][2] | Anisotropic B[1][3] | Anisotropic B[2][2] | Anisotropic B[2][3] | Anisotropic B[3][3] | |
0.01 | -0.01 |
RMS Deviations | |
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Key | Refinement Restraint Deviation |
r_dihedral_angle_2_deg | 34.768 |
r_dihedral_angle_4_deg | 16.688 |
r_dihedral_angle_3_deg | 14.381 |
r_dihedral_angle_1_deg | 7.55 |
r_scangle_it | 3.331 |
r_scbond_it | 2.109 |
r_mcangle_it | 1.516 |
r_angle_refined_deg | 1.438 |
r_mcbond_it | 0.917 |
r_symmetry_hbond_refined | 0.366 |
Non-Hydrogen Atoms Used in Refinement | |
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Non-Hydrogen Atoms | Number |
Protein Atoms | 2895 |
Nucleic Acid Atoms | |
Solvent Atoms | 342 |
Heterogen Atoms | 36 |
Software
Software | |
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Software Name | Purpose |
CCP4 | model building |
REFMAC | refinement |
HKL-2000 | data collection |
HKL-2000 | data reduction |
HKL-2000 | data scaling |
CCP4 | phasing |