6T21
N-terminal domain of EcoKMcrA restriction endonuclease (NEco) in complex with T5mCGA target sequence
X-RAY DIFFRACTION
Crystallization
Crystalization Experiments | ||||
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ID | Method | pH | Temperature | Details |
1 | VAPOR DIFFUSION, HANGING DROP | 6.5 | 291 | 1.8 ul of protein-DNA solution (436:523 uM) was mixed with 2.2 ul of the F1 condition of the PACT premier crystal screen (MDL) (0.2 M Sodium fluoride, 0.1 M Bis-Tris propane, pH 6.5, 20% PEG 3350) and cryo-protected with an addition of 25% glycerol. |
Crystal Properties | |
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Matthews coefficient | Solvent content |
3.05 | 59.66 |
Crystal Data
Unit Cell | |
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Length ( Å ) | Angle ( ˚ ) |
a = 112.882 | α = 90 |
b = 112.882 | β = 90 |
c = 155.751 | γ = 120 |
Symmetry | |
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Space Group | P 61 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 | PIXEL | DECTRIS EIGER X 16M | 2019-08-13 | M | SINGLE WAVELENGTH |
Radiation Source | |||||
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ID # | Source | Type | Wavelength List | Synchrotron Site | Beamline |
1 | SYNCHROTRON | PETRA III, EMBL c/o DESY BEAMLINE P14 (MX2) | 0.9793 | PETRA III, EMBL c/o DESY | P14 (MX2) |
Data Collection
Overall | |||||||||||||||||||
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ID # | Resolution (High) | Resolution (Low) | Percent Possible (Observed) | R Merge I (Observed) | Rrim 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 | 2.07 | 33.38 | 99.5 | 0.103 | 0.105 | 1 | 30.17 | 38.87 | 36261 | 53 |
Highest Resolution Shell | |||||||||||||||||||
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ID # | Resolution (High) | Resolution (Low) | Percent Possible (All) | Percent Possible (Observed) | R Merge I (Observed) | Rrim I (All) | CC (Half) | Mean I Over Sigma (Observed) | Redundancy | Number Unique Reflections (All) | |||||||||
1 | 2.07 | 2.19 | 98.6 | 2.299 | 2.329 | 0.758 | 1.98 | 38.92 |
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 | 6R64 | 2.07 | 33.38 | 34065 | 1824 | 98.62 | 0.161 | 0.159 | 0.2013 | RANDOM | 52.793 |
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] | |
-0.3 | -0.15 | -0.3 | 0.99 |
RMS Deviations | |
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Key | Refinement Restraint Deviation |
r_dihedral_angle_2_deg | 35.061 |
r_dihedral_angle_4_deg | 13.552 |
r_dihedral_angle_3_deg | 11.638 |
r_dihedral_angle_1_deg | 5.197 |
r_angle_refined_deg | 1.152 |
r_angle_other_deg | 0.92 |
r_chiral_restr | 0.066 |
r_bond_refined_d | 0.006 |
r_gen_planes_refined | 0.005 |
r_bond_other_d | 0.001 |
Non-Hydrogen Atoms Used in Refinement | |
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Non-Hydrogen Atoms | Number |
Protein Atoms | 2320 |
Nucleic Acid Atoms | 812 |
Solvent Atoms | 431 |
Heterogen Atoms |
Software
Software | |
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Software Name | Purpose |
REFMAC | refinement |
XDS | data reduction |
XDS | data scaling |
MOLREP | phasing |
ARP/wARP | model building |
PDB_EXTRACT | data extraction |