5BIR
DISECTING HISTIDINE INTERACTIONS IN RIBONUCLEASE T1 USING ASN AND GLN MUTATIONS
X-RAY DIFFRACTION
Starting Model(s)
Initial Refinement Model(s) | |||
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Type | Source | Accession Code | Details |
experimental model | PDB | 2AAD | PDB ENTRY 2AAD |
Crystallization
Crystalization Experiments | ||||
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ID | Method | pH | Temperature | Details |
1 | VAPOR DIFFUSION, HANGING DROP | 4.2 | VAPOR DIFFUSION, HANGING DROP, 20 MG/ML PROTEIN NAOAC BUF. PH 4.2, 0.125 % 2'GMP, 1.25 % CACL2, 47.5 % MPD, vapor diffusion - hanging drop |
Crystal Properties | |
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Matthews coefficient | Solvent content |
2.56 | 52.01 |
Crystal Data
Unit Cell | |
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Length ( Å ) | Angle ( ˚ ) |
a = 58.39 | α = 90 |
b = 58.39 | β = 90 |
c = 133.39 | γ = 90 |
Symmetry | |
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Space Group | P 41 21 2 |
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 | 293 | DIFFRACTOMETER | ENRAF-NONIUS FAST | COLLIMATOR | 1996-02-20 | M |
Radiation Source | |||||
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ID # | Source | Type | Wavelength List | Synchrotron Site | Beamline |
1 | ENRAF-NONIUS |
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 | 2 | 10 | 96 | 0.05 | 10.1 | 1.3 | 15698 | 3 | 11.8 |
Highest Resolution Shell | |||||||||||||||||||
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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) | |||||||||||
1.85 | 1.95 | 90.7 | 0.038 | 7.2 | 1 |
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 | PDB ENTRY 2AAD | 2 | 10 | 15698 | 1554 | 97.1 | 0.193 | 0.193 | 0.255 | RANDOM | 19.7 |
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] | |
RMS Deviations | |
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Key | Refinement Restraint Deviation |
x_dihedral_angle_d | 26.8 |
x_scangle_it | 4.6 |
x_scbond_it | 3.38 |
x_mcangle_it | 3.14 |
x_improper_angle_d | 3.09 |
x_angle_deg | 2.9 |
x_mcbond_it | 2.04 |
x_bond_d | 0.031 |
x_bond_d_na | |
x_bond_d_prot |
Non-Hydrogen Atoms Used in Refinement | |
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Non-Hydrogen Atoms | Number |
Protein Atoms | 1669 |
Nucleic Acid Atoms | 32 |
Solvent Atoms | 29 |
Heterogen Atoms |
Software
Software | |
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Software Name | Purpose |
Agrovata | data collection |
ROTAVATA | data reduction |
X-PLOR | model building |
X-PLOR | refinement |
CCP4 | data scaling |
ROTAVATA | data scaling |
X-PLOR | phasing |