4HMA
Crystal structure of an MMP twin carboxylate based inhibitor LC20 in complex with the MMP-9 catalytic domain
X-RAY DIFFRACTION
Starting Model(s)
Initial Refinement Model(s) | |||
---|---|---|---|
Type | Source | Accession Code | Details |
experimental model | PDB | 4H82 |
Crystallization
Crystalization Experiments | ||||
---|---|---|---|---|
ID | Method | pH | Temperature | Details |
1 | VAPOR DIFFUSION, SITTING DROP | 6 | 293 | Protein: human MMP9 (E402Q) at 308.7 micro-M twin inhibitor LC20 at 154 micro-M (stoichiometry 2:1) and 120mM acetohydroxamic acid. RESERVOIR: 12% Polyethylene glycol 20,000, 1.5M NaCl, 0.1 M PCTP (Na propionate, Na cacodylate, Bis-Tris-propane ratio 2:1:2; 75% pH 4, 25% pH 9.5) CRYOPROTECTANT: 40% C2 (25 % di-ethylene glycol + 25 % glycerol + 25 % 1,2-propanediol), 9% PEG 10,000 1.5M NaCl, 0.1M PCTP 80/2, VAPOR DIFFUSION, SITTING DROP, temperature 293K |
Crystal Properties | |
---|---|
Matthews coefficient | Solvent content |
2.4 | 48.74 |
Crystal Data
Unit Cell | |
---|---|
Length ( ? ) | Angle ( ? ) |
a = 73.87 | ¦Á = 90 |
b = 98.24 | ¦Â = 90 |
c = 47.44 | ¦Ã = 90 |
Symmetry | |
---|---|
Space Group | P 21 21 2 |
Diffraction
Diffraction Experiment | ||||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
ID # | Crystal ID | Scattering Type | Data Collection Temperature | Detector | Detector Type | Details | Collection Date | Monochromator | Protocol | |||||
1 | 1 | x-ray | 100 | PIXEL | PSI PILATUS 6M | bent cylindrical mirror | 2012-10-12 | M | SINGLE WAVELENGTH |
Radiation Source | |||||
---|---|---|---|---|---|
ID # | Source | Type | Wavelength List | Synchrotron Site | Beamline |
1 | SYNCHROTRON | SOLEIL BEAMLINE PROXIMA 1 | 0.98011 | SOLEIL | PROXIMA 1 |
Data Collection
Overall | |||||||||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
ID # | Resolution (High) | Resolution (Low) | Percent Possible (Observed) | R Merge I (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 | 1.94 | 50 | 99.4 | 0.166 | 0.155 | 8.19 | 7.98 | 26173 | 26019 | -3 | 36.556 |
Highest Resolution Shell | |||||||||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
ID # | Resolution (High) | Resolution (Low) | Percent Possible (All) | Percent Possible (Observed) | R Merge I (Observed) | R-Sym I (Observed) | Mean I Over Sigma (Observed) | Redundancy | Number Unique Reflections (All) | ||||||||||
1 | 1.94 | 2.06 | 96.6 | 1.533 | 1.432 | 1.3 | 7.87 | 4162 |
Refinement
Statistics | |||||||||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Diffraction ID | Structure Solution Method | Cross Validation method | Starting model | Resolution (High) | Resolution (Low) | Cut-off Sigma (I) | Number Reflections (All) | 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 | 4H82 | 1.94 | 42.72 | -3 | 26019 | 24713 | 1301 | 100 | 0.21439 | 0.21088 | 0.28302 | RANDOM | 32.048 |
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] | |
0.82 | -0.65 | -0.18 |
RMS Deviations | |
---|---|
Key | Refinement Restraint Deviation |
r_dihedral_angle_2_deg | 35.336 |
r_dihedral_angle_4_deg | 24.017 |
r_dihedral_angle_3_deg | 16.531 |
r_dihedral_angle_1_deg | 6.74 |
r_scangle_it | 4.572 |
r_scbond_it | 3.114 |
r_mcangle_it | 2.12 |
r_angle_refined_deg | 1.966 |
r_mcbond_it | 1.241 |
r_chiral_restr | 0.158 |
Non-Hydrogen Atoms Used in Refinement | |
---|---|
Non-Hydrogen Atoms | Number |
Protein Atoms | 2550 |
Nucleic Acid Atoms | |
Solvent Atoms | 345 |
Heterogen Atoms | 190 |
Software
Software | |
---|---|
Software Name | Purpose |
DNA | data collection |
MOLREP | phasing |
REFMAC | refinement |
XDS | data reduction |
XDS | data scaling |