3D4A
Crystal structure of ribonuclease Sa2 with 3'-GMP obtained by ligand diffusion
X-RAY DIFFRACTION
Starting Model(s)
Initial Refinement Model(s) | |||
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Type | Source | Accession Code | Details |
experimental model | PDB | 1PY3 | PDB entry 1py3 |
Crystallization
Crystalization Experiments | ||||
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ID | Method | pH | Temperature | Details |
1 | VAPOR DIFFUSION, HANGING DROP | 7.2 | 298 | ammonium sulfate, phosphate buffer, pH 7.2, VAPOR DIFFUSION, HANGING DROP, temperature 298.0K |
Crystal Properties | |
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Matthews coefficient | Solvent content |
2.86 | 56.98 |
Crystal Data
Unit Cell | |
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Length ( Å ) | Angle ( ˚ ) |
a = 101.521 | α = 90 |
b = 65.913 | β = 100.92 |
c = 56.966 | 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 | 100 | AREA DETECTOR | MARRESEARCH | mirrors | 2001-11-15 | M | SINGLE WAVELENGTH |
Radiation Source | |||||
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ID # | Source | Type | Wavelength List | Synchrotron Site | Beamline |
1 | SYNCHROTRON | EMBL/DESY, HAMBURG BEAMLINE X31 | 1.1 | EMBL/DESY, HAMBURG | X31 |
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 | 2.2 | 20 | 88.4 | 0.038 | 17 | 1.9 | 16671 | 16671 | 2 | 43.3 |
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 | 2.2 | 2.257 | 59.7 | 0.162 | 4.1 | 1.7 | 456 |
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 | MOLECULAR REPLACEMENT | THROUGHOUT | PDB entry 1py3 | 2.2 | 19.88 | 16671 | 15801 | 869 | 88.31 | 0.2228 | 0.2228 | 0.22047 | 0.2646 | RANDOM | 31.703 |
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] | |
-1.46 | -0.54 | 3.82 | -2.57 |
RMS Deviations | |
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Key | Refinement Restraint Deviation |
r_dihedral_angle_2_deg | 30.583 |
r_dihedral_angle_4_deg | 21.128 |
r_dihedral_angle_3_deg | 19.548 |
r_dihedral_angle_1_deg | 6.926 |
r_scangle_it | 2.327 |
r_scbond_it | 1.538 |
r_angle_refined_deg | 1.52 |
r_mcangle_it | 1.041 |
r_mcbond_it | 0.618 |
r_symmetry_vdw_refined | 0.304 |
Non-Hydrogen Atoms Used in Refinement | |
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Non-Hydrogen Atoms | Number |
Protein Atoms | 2232 |
Nucleic Acid Atoms | |
Solvent Atoms | 133 |
Heterogen Atoms | 34 |
Software
Software | |
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Software Name | Purpose |
REFMAC | refinement |
DENZO | data reduction |
SCALEPACK | data scaling |
MOLREP | phasing |