5K9G
Crystal Structure of GTP Cyclohydrolase-IB with Tris
X-RAY DIFFRACTION
Starting Model(s)
Initial Refinement Model(s) | |||
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Type | Source | Accession Code | Details |
experimental model | PDB | 3D1T |
Crystallization
Crystalization Experiments | ||||
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ID | Method | pH | Temperature | Details |
1 | VAPOR DIFFUSION, SITTING DROP | 8 | 298 | (PEG 6000, 10-16%), LiCl (1-1.4 M), Tris (50 mM, pH 9.0) and Tris-Cl (50 mM, pH 7.0). Enzym sample prepared at 10 mg/mL in 50 mM Tris-HCl, 50 mM KCl, 1 mM DTT, pH 8.0 |
Crystal Properties | |
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Matthews coefficient | Solvent content |
2.3 | 46.45 |
Crystal Data
Unit Cell | |
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Length ( ? ) | Angle ( ? ) |
a = 92.707 | ¦Á = 90 |
b = 100.557 | ¦Â = 90 |
c = 114.017 | ¦Ã = 90 |
Symmetry | |
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Space Group | C 2 2 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 315 | 2008-06-24 | M | SINGLE WAVELENGTH |
Radiation Source | |||||
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ID # | Source | Type | Wavelength List | Synchrotron Site | Beamline |
1 | SYNCHROTRON | SSRL BEAMLINE BL7-1 | 0.97670 | SSRL | BL7-1 |
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 | 1.9 | 68.16 | 99.2 | 0.047 | 36.17 | 4.5 | 41832 |
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 | 1.9 | 1.93 | 0.355 | 2.05 |
Refinement
Statistics | |||||||||||||||||||
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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 | 3D1T | 1.9 | 68.16 | 39731 | 2068 | 99.12 | 0.17537 | 0.17305 | 0.22079 | RANDOM | 42.031 |
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] | |
-2.33 | 0.62 | 1.7 |
RMS Deviations | |
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Key | Refinement Restraint Deviation |
r_dihedral_angle_2_deg | 37.559 |
r_dihedral_angle_4_deg | 23.702 |
r_dihedral_angle_3_deg | 15.484 |
r_long_range_B_refined | 8.019 |
r_dihedral_angle_1_deg | 6.963 |
r_scbond_it | 4.786 |
r_mcangle_it | 4.416 |
r_mcbond_it | 3.698 |
r_angle_refined_deg | 1.992 |
r_chiral_restr | 0.173 |
Non-Hydrogen Atoms Used in Refinement | |
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Non-Hydrogen Atoms | Number |
Protein Atoms | 3841 |
Nucleic Acid Atoms | |
Solvent Atoms | 383 |
Heterogen Atoms | 45 |
Software
Software | |
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Software Name | Purpose |
REFMAC | refinement |
HKL-2000 | data reduction |
HKL-2000 | data scaling |
REFMAC | phasing |