7MLT
Crystal structure of ricin A chain in complex with 5-(2-ethylphenyl)thiophene-2-carboxylic acid
X-RAY DIFFRACTION
Starting Model(s)
Initial Refinement Model(s) | |||
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Type | Source | Accession Code | Details |
experimental model | PDB | 1RTC |
Crystallization
Crystalization Experiments | ||||
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ID | Method | pH | Temperature | Details |
1 | VAPOR DIFFUSION, SITTING DROP | 8.5 | 295 | 100 mM Tris pH 8.5, 200 mM Magnesium Chloride, 16 %(w/v) PEG 4000 |
Crystal Properties | |
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Matthews coefficient | Solvent content |
3.7 | 67.2 |
Crystal Data
Unit Cell | |
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Length ( Å ) | Angle ( ˚ ) |
a = 168.618 | α = 90 |
b = 168.618 | β = 90 |
c = 54.949 | γ = 120 |
Symmetry | |
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Space Group | P 63 2 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 | 100 | CCD | RAYONIX MX225HE | 2020-09-30 | M | SINGLE WAVELENGTH |
Radiation Source | |||||
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ID # | Source | Type | Wavelength List | Synchrotron Site | Beamline |
1 | SYNCHROTRON | APS BEAMLINE 31-ID | 0.9793 | APS | 31-ID |
Data Collection
Overall | |||||||||||||||||||
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ID # | Resolution (High) | Resolution (Low) | Percent Possible (Observed) | Rpim I (All) | CC (Half) | 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 | 84.45 | 100 | 0.03 | 0.99 | 20.3 | 21.8 | 43070 |
Highest Resolution Shell | |||||||||||||||||||
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ID # | Resolution (High) | Resolution (Low) | Percent Possible (All) | Percent Possible (Observed) | Rpim I (All) | CC (Half) | Mean I Over Sigma (Observed) | Redundancy | Number Unique Reflections (All) | ||||||||||
1 | 1.8 | 1.84 | 100 | 0.43 | 0.68 | 2 | 22.6 |
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 | 1RTC | 1.8 | 84.45 | 40857 | 2193 | 99.97 | 0.1785 | 0.1772 | 0.2028 | RANDOM | 29.193 |
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] | |
-0.35 | -0.17 | -0.35 | 1.13 |
RMS Deviations | |
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Key | Refinement Restraint Deviation |
r_dihedral_angle_2_deg | 31.988 |
r_dihedral_angle_4_deg | 14.707 |
r_dihedral_angle_3_deg | 13.186 |
r_dihedral_angle_1_deg | 6.345 |
r_angle_refined_deg | 1.357 |
r_angle_other_deg | 1.315 |
r_chiral_restr | 0.066 |
r_bond_refined_d | 0.006 |
r_gen_planes_refined | 0.006 |
r_bond_other_d | 0.001 |
Non-Hydrogen Atoms Used in Refinement | |
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Non-Hydrogen Atoms | Number |
Protein Atoms | 2025 |
Nucleic Acid Atoms | |
Solvent Atoms | 272 |
Heterogen Atoms | 91 |
Software
Software | |
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Software Name | Purpose |
REFMAC | refinement |
PDB_EXTRACT | data extraction |
MOSFLM | data reduction |
Aimless | data scaling |
PHASER | phasing |