3APT
properties and crystal structure of methylenetetrahydrofolate reductase from Thermus thermophilus HB8
X-RAY DIFFRACTION
Starting Model(s)
Initial Refinement Model(s) | |||
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Type | Source | Accession Code | Details |
experimental model | PDB | 1V93 | PDB ENTRY 1V93 |
Crystallization
Crystalization Experiments | ||||
---|---|---|---|---|
ID | Method | pH | Temperature | Details |
1 | VAPOR DIFFUSION, HANGING DROP | 4.3 | 293 | PH 4.3-4.5, 293K, 0.2M SODIUM ACETATE, 1M LITHIUM CHROLIDE, 10% PEG 6000, 10-20% GLYCEROL, 2-5% DIOXANE, VAPOR DIFFUSION, HANGING DROP |
Crystal Properties | |
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Matthews coefficient | Solvent content |
2.28 | 46.14 |
Crystal Data
Unit Cell | |
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Length ( ? ) | Angle ( ? ) |
a = 43.924 | ¦Á = 90 |
b = 89.673 | ¦Â = 90 |
c = 160.72 | ¦Ã = 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 | ADSC QUANTUM 270 | 2010-02-06 | M | SINGLE WAVELENGTH |
Radiation Source | |||||
---|---|---|---|---|---|
ID # | Source | Type | Wavelength List | Synchrotron Site | Beamline |
1 | SYNCHROTRON | PHOTON FACTORY BEAMLINE AR-NE3A | 1.0 | Photon Factory | AR-NE3A |
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 | 1.85 | 19.97 | 99.54 | 0.06 | 17.6 | 7.7 | 55102 | 30.1 |
Highest Resolution Shell | |||||||||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
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 | 1.85 | 1.88 | 99.6 | 0.286 | 4.83 | 4.8 | 2689 |
Refinement
Statistics | |||||||||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
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 | PDB ENTRY 1V93 | 1.85 | 19.95 | 52173 | 2796 | 99.56 | 0.20511 | 0.2026 | 0.252 | RANDOM | 35.903 |
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] | |
0.03 | 0.01 | -0.03 |
RMS Deviations | |
---|---|
Key | Refinement Restraint Deviation |
r_dihedral_angle_2_deg | 34.287 |
r_dihedral_angle_4_deg | 22.209 |
r_dihedral_angle_3_deg | 18.667 |
r_dihedral_angle_1_deg | 6.673 |
r_scangle_it | 5.526 |
r_scbond_it | 3.487 |
r_mcangle_it | 2.445 |
r_angle_refined_deg | 2.136 |
r_mcbond_it | 1.405 |
r_chiral_restr | 0.215 |
Non-Hydrogen Atoms Used in Refinement | |
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Non-Hydrogen Atoms | Number |
Protein Atoms | 4482 |
Nucleic Acid Atoms | |
Solvent Atoms | 423 |
Heterogen Atoms | 57 |
Software
Software | |
---|---|
Software Name | Purpose |
REFMAC | refinement |
PDB_EXTRACT | data extraction |
HKL-2000 | data collection |
DENZO | data reduction |
HKL-2000 | data scaling |
MOLREP | phasing |