4HEC
Crystal structure of a putative uncharacterized protein from Mycobacterium tuberculosis
X-RAY DIFFRACTION
Crystallization
Crystalization Experiments | ||||
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ID | Method | pH | Temperature | Details |
1 | VAPOR DIFFUSION, SITTING DROP | 7.5 | 290 | EMBio JCSG+ B4: 10% PEG 8000, 8% Ethylene glycol, 100mM HEPES pH 7.5; MytuD.18400.a.A1.PS01434 at 12.8mg/ml + 2.5mM AMPPNP and MgCl2, cryo: 20% EG; the structure was solved via iodide SAD: a crystal was soaked in reservoir plus 20% ethylene glycol and 750mM NaI, anomalous amplitudes are deposited, VAPOR DIFFUSION, SITTING DROP, temperature 290K |
Crystal Properties | |
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Matthews coefficient | Solvent content |
1.99 | 38 |
Crystal Data
Unit Cell | |
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Length ( Å ) | Angle ( ˚ ) |
a = 42.78 | α = 90 |
b = 76.72 | β = 90 |
c = 106.04 | γ = 90 |
Symmetry | |
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Space Group | P 21 21 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 | CCD | RIGAKU SATURN 944+ | 2012-08-31 | M | SINGLE WAVELENGTH |
Radiation Source | |||||
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ID # | Source | Type | Wavelength List | Synchrotron Site | Beamline |
1 | ROTATING ANODE | RIGAKU FR-E+ SUPERBRIGHT | 1.5418 |
Data Collection
Overall | |||||||||||||||||||
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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 | 1.8 | 50 | 99.1 | 0.036 | 0.036 | 27.29 | 4.7 | 33216 | 32926 | -3 | 28.69 |
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 | 1.8 | 1.85 | 96.4 | 0.434 | 2.44 |
Refinement
Statistics | |||||||||||||||||||
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Diffraction ID | Structure Solution Method | Cross Validation method | Starting model | Resolution (High) | Resolution (Low) | Number Reflections (All) | Number Reflections (Observed) | Number Reflections (R-Free) | Percent Reflections (Observed) | R-Factor (All) | R-Factor (Observed) | R-Work | R-Free | R-Free Selection Details | Mean Isotropic B | ||||
X-RAY DIFFRACTION | SAD | THROUGHOUT | de novo phasing with iodide ions | 1.8 | 38.39 | 33216 | 31227 | 1645 | 99.15 | 0.1904 | 0.1904 | 0.1884 | 0.2277 | RANDOM | 25.3846 |
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] | |
-0.68 | 0.01 | 0.67 |
RMS Deviations | |
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Key | Refinement Restraint Deviation |
r_dihedral_angle_2_deg | 29.271 |
r_dihedral_angle_4_deg | 22.951 |
r_dihedral_angle_3_deg | 11.828 |
r_dihedral_angle_1_deg | 5.6 |
r_angle_refined_deg | 1.652 |
r_angle_other_deg | 0.86 |
r_chiral_restr | 0.094 |
r_bond_refined_d | 0.014 |
r_gen_planes_refined | 0.008 |
r_bond_other_d | 0.001 |
Non-Hydrogen Atoms Used in Refinement | |
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Non-Hydrogen Atoms | Number |
Protein Atoms | 2570 |
Nucleic Acid Atoms | |
Solvent Atoms | 220 |
Heterogen Atoms | 2 |
Software
Software | |
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Software Name | Purpose |
XSCALE | data scaling |
PHASER | phasing |
REFMAC | refinement |
PDB_EXTRACT | data extraction |
StructureStudio | data collection |