1RA8
DIHYDROFOLATE REDUCTASE COMPLEXED WITH FOLATE AND 2-MONOPHOSPHOADENOSINE 5'-DIPHOSPHORIBOSE
X-RAY DIFFRACTION
Starting Model(s)
Initial Refinement Model(s) | |||
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Type | Source | Accession Code | Details |
experimental model | PDB | 1RA2 | PDB ENTRY 1RA2 |
Crystallization
Crystalization Experiments | ||||
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ID | Method | pH | Temperature | Details |
1 | 7 | pH 7.0 |
Crystal Properties | |
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Matthews coefficient | Solvent content |
2.31 | 46.8 |
Crystal Data
Unit Cell | |
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Length ( Å ) | Angle ( ˚ ) |
a = 74.27 | α = 90 |
b = 59.86 | β = 107.38 |
c = 38.92 | γ = 90 |
Symmetry | |
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Space Group | C 1 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 | AREA DETECTOR | XUONG-HAMLIN MULTIWIRE | 1993-01-27 | M |
Radiation Source | |||||
---|---|---|---|---|---|
ID # | Source | Type | Wavelength List | Synchrotron Site | Beamline |
1 | ROTATING ANODE | RIGAKU RUH2R |
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 | 1.8 | 100 | 72 | 0.038 | 14 | 3.1 | 10657 |
Highest Resolution Shell | |||||||||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
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) | |||||||||||
1.84 | 2.03 | 58 | 0.149 | 2.7 | 2.3 |
Refinement
Statistics | |||||||||||||||||||
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Diffraction ID | Structure Solution Method | Starting model | Resolution (High) | Resolution (Low) | Number Reflections (Observed) | Number Reflections (R-Free) | Percent Reflections (Observed) | R-Work | R-Free | Mean Isotropic B | |||||||||
X-RAY DIFFRACTION | DIFFERENCE FOURIER | PDB ENTRY 1RA2 | 1.8 | 20 | 10657 | 72 | 0.151 |
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] | |
RMS Deviations | |
---|---|
Key | Refinement Restraint Deviation |
t_dihedral_angle_d | 24 |
t_it | 6.1 |
t_angle_deg | 3.1 |
t_nbd | 0.026 |
t_bond_d | 0.022 |
t_trig_c_planes | 0.021 |
t_gen_planes | 0.008 |
t_incorr_chiral_ct | |
t_pseud_angle |
Non-Hydrogen Atoms Used in Refinement | |
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Non-Hydrogen Atoms | Number |
Protein Atoms | 1268 |
Nucleic Acid Atoms | |
Solvent Atoms | 144 |
Heterogen Atoms | 63 |
Software
Software | |
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Software Name | Purpose |
TNT | refinement |
UCSD | data reduction |
UCSD | data scaling |
TNT | phasing |