1C2F
RECRUITING ZINC TO MEDIATE POTENT, SPECIFIC INHIBITION OF SERINE PROTEASES
X-RAY DIFFRACTION
Crystallization
Crystalization Experiments | ||||
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ID | Method | pH | Temperature | Details |
1 | 8 | BATCH, 1.51 M MGSO4 . 7 H2O, 0.59 MM TRYPSIN, 1.0 MM ZN(II) 5.0 % DMSO: CRYSTALLIZATION SOLUTION WAS SATURATED IN KETO-BABIM. CRYSTAL WAS TRANSFERRED TO SYNTHETIC MOTHER LIQUOR CONTAINING 9.0 MM ZN(II), PH 8.00 AND SOAKED FOR SEVERAL DAYS WITH SEVERAL REPLACEMENTS OF SOAKING SOLUTIONS. THE SOLUTION WAS SATURATED IN KETO-BABIM AND CONTAINED 2.0 % DMSO TO INCREASE INHIBITOR SOLUBILITY. |
Crystal Properties | |
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Matthews coefficient | Solvent content |
2.06 | 18 |
Crystal Data
Unit Cell | |
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Length ( Å ) | Angle ( ˚ ) |
a = 54.99 | α = 90 |
b = 54.99 | β = 90 |
c = 109.92 | γ = 120 |
Symmetry | |
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Space Group | P 31 2 1 |
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 | 298 | IMAGE PLATE | RIGAKU RAXIS IV++ | MSC MIRRORS | 1997-02-09 | M | SINGLE WAVELENGTH |
Radiation Source | |||||
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ID # | Source | Type | Wavelength List | Synchrotron Site | Beamline |
1 | ROTATING ANODE |
Data Collection
Overall | |||||||||||||||||||
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ID # | Resolution (High) | Resolution (Low) | Percent Possible (Observed) | R Merge 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 | 1.4 | 54 | 66 | 0.082 | 5.3 | 2.9 | 18088 | 1 |
Highest Resolution Shell | |||||||||||||||||||
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ID # | Resolution (High) | Resolution (Low) | Percent Possible (All) | Percent Possible (Observed) | R Merge I (Observed) | Mean I Over Sigma (Observed) | Redundancy | Number Unique Reflections (All) | |||||||||||
1.7 | 1.78 | 40.2 | 0.258 | 1.7 |
Refinement
Statistics | |||||||||||||||||||
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Diffraction ID | Structure Solution Method | Cross Validation method | Resolution (High) | Resolution (Low) | Cut-off Sigma (F) | Number Reflections (Observed) | Number Reflections (R-Free) | Percent Reflections (Observed) | R-Factor (Observed) | R-Work | R-Free | Mean Isotropic B | |||||||
X-RAY DIFFRACTION | DIFFERENCE FOURIER PLUS REFINEMENT | X-PLOR | 1.7 | 7.5 | 2 | 14306 | 1420 | 66 | 0.19 | 0.19 | 0.241 |
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] | |
RMS Deviations | |
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Key | Refinement Restraint Deviation |
x_dihedral_angle_d | 26 |
x_angle_deg | 3.9 |
x_improper_angle_d | 0.54 |
x_bond_d | 0.018 |
x_bond_d_na | |
x_bond_d_prot | |
x_angle_d | |
x_angle_d_na | |
x_angle_d_prot | |
x_angle_deg_na |
Non-Hydrogen Atoms Used in Refinement | |
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Non-Hydrogen Atoms | Number |
Protein Atoms | 3294 |
Nucleic Acid Atoms | |
Solvent Atoms | 693 |
Heterogen Atoms | 57 |
Software
Software | |
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Software Name | Purpose |
bioteX | data collection |
bioteX | data reduction |
X-PLOR | model building |
Quanta | model building |
Insight II | model building |
X-PLOR | refinement |
bioteX | data scaling |
X-PLOR | phasing |