7Q07
Ketol-acid reductoisomerase from Methanothermococcus thermolithotrophicus in the open state with NADP and tartrate
X-RAY DIFFRACTION
Starting Model(s)
Initial Refinement Model(s) | |||
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Type | Source | Accession Code | Details |
experimental model | PDB | 7Q03 |
Crystallization
Crystalization Experiments | ||||
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ID | Method | pH | Temperature | Details |
1 | VAPOR DIFFUSION, SITTING DROP | 6.5 | 291.15 | KARI was crystallized at 13.5 mg/ml in the following buffer 25 mM Tris/HCl pH 7.6, 2 mM dithiothreitol, 10% glycerol. The reservoir was filled with 90 ul crystallization solution (33 % (w/v) PEG 5000 MME, 100 mM MES/NaOH pH 6.5 and 200 mM ammonium sulphate). Drops of 0.7 ul protein with 0.7 ul of crystallisation solution were applied on the shelf. Crystals were firstly soaked in the crystallisation solution supplemented with 20 mM NADP, 50 mM L-Tartrate and 50 mM MgCl2 for 3 minutes, and then soaked in the crystallisation solution supplemented with 30 % v/v glycerol before freezing. |
Crystal Properties | |
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Matthews coefficient | Solvent content |
2.56 | 51.9 |
Crystal Data
Unit Cell | |
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Length ( Å ) | Angle ( ˚ ) |
a = 130.827 | α = 90 |
b = 130.827 | β = 90 |
c = 130.827 | γ = 90 |
Symmetry | |
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Space Group | I 2 3 |
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 PILATUS 6M | 2016-06-24 | M | SINGLE WAVELENGTH |
Radiation Source | |||||
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ID # | Source | Type | Wavelength List | Synchrotron Site | Beamline |
1 | SYNCHROTRON | SLS BEAMLINE X10SA | 0.97916 | SLS | X10SA |
Data Collection
Overall | |||||||||||||||||||
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ID # | Resolution (High) | Resolution (Low) | Percent Possible (Observed) | R Merge I (Observed) | Rrim I (All) | 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 | 2.2 | 46.25 | 100 | 0.163 | 0.168 | 0.039 | 0.998 | 23.7 | 18.2 | 19073 |
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) | Rpim I (All) | CC (Half) | Mean I Over Sigma (Observed) | Redundancy | Number Unique Reflections (All) | ||||||||
1 | 2.2 | 2.32 | 100 | 0.528 | 0.554 | 0.166 | 0.385 | 4.4 | 10.9 |
Refinement
Statistics | |||||||||||||||||||
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Diffraction ID | Structure Solution Method | Cross Validation method | Starting model | Resolution (High) | Resolution (Low) | Cut-off Sigma (F) | Number Reflections (Observed) | Number Reflections (R-Free) | Percent Reflections (Observed) | R-Factor (Observed) | R-Work | R-Free | Mean Isotropic B | ||||||
X-RAY DIFFRACTION | MOLECULAR REPLACEMENT | THROUGHOUT | 7Q03 | 2.2 | 41.37 | 133.59 | 19073 | 1005 | 99.99 | 0.19 | 0.1864 | 0.2123 | 30.3423 |
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] | |
Non-Hydrogen Atoms Used in Refinement | |
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Non-Hydrogen Atoms | Number |
Protein Atoms | 2536 |
Nucleic Acid Atoms | |
Solvent Atoms | 140 |
Heterogen Atoms | 49 |
Software
Software | |
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Software Name | Purpose |
PHENIX | refinement |
PDB_EXTRACT | data extraction |
XDS | data reduction |
SCALA | data scaling |
PHENIX | phasing |