Crystal structure of the complex of NtcA with its transcriptional co- activator PipX
X-RAY DIFFRACTION
Starting Model(s)
Initial Refinement Model(s) | |||
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Type | Source | Accession Code | Details |
experimental model | PDB | 2XHK | PDB ENTRY 2XHK |
Crystallization
Crystalization Experiments | ||||
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ID | Method | pH | Temperature | Details |
1 | 5.5 | NTCA-PIPX COMPLEX WAS IN 50 MM SODIUM CITRATE PH 6.5, 0.5 M NACL, 5 MM MAGNESIUM CHLORIDE, 50 MM ARGININE HYDROCHLORIDE, 50 MM NA L-GLUTAMATE, AND 10 MM 2-OXOGLUTARATE. CRYSTALLIZATION SOLUTION: 50 MM MES PH 5.5, 1M SODIUM MALONATE 10 MM MANGANESE CHLORIDE, 2% MPD, 5% DMSO. |
Crystal Properties | |
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Matthews coefficient | Solvent content |
2 | 43.5 |
Crystal Data
Unit Cell | |
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Length ( ? ) | Angle ( ? ) |
a = 52.02 | ¦Á = 90 |
b = 52.02 | ¦Â = 90 |
c = 227.73 | ¦Ã = 90 |
Symmetry | |
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Space Group | P 41 |
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 | ADSC QUANTUM 210r | 2009-02-26 | M | SINGLE WAVELENGTH |
Radiation Source | |||||
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ID # | Source | Type | Wavelength List | Synchrotron Site | Beamline |
1 | SYNCHROTRON | ESRF BEAMLINE BM16 | ESRF | BM16 |
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 | 2.25 | 56.89 | 98.9 | 0.08 | 7.1 | 6.9 | 28245 | 2 | 36.2 |
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 | 2.25 | 2.37 | 98.9 | 0.4 | 2 | 5.6 |
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 (Depositor) | R-Work (DCC) | R-Free (Depositor) | R-Free (DCC) | R-Free Selection Details | Mean Isotropic B | ||||
X-RAY DIFFRACTION | MOLECULAR REPLACEMENT | THROUGHOUT | PDB ENTRY 2XHK | 2.25 | 25 | 26813 | 1420 | 98.98 | 0.2157 | 0.21413 | 0.23 | 0.24533 | 0.26 | RANDOM | 35.677 |
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] | |
-0.17 | -0.17 | 0.34 |
RMS Deviations | |
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Key | Refinement Restraint Deviation |
r_dihedral_angle_2_deg | 35.474 |
r_dihedral_angle_4_deg | 20.187 |
r_dihedral_angle_3_deg | 16.911 |
r_dihedral_angle_1_deg | 6.793 |
r_scangle_it | 2.999 |
r_scbond_it | 1.813 |
r_angle_refined_deg | 1.419 |
r_mcangle_it | 1.171 |
r_angle_other_deg | 0.896 |
r_mcbond_it | 0.617 |
Non-Hydrogen Atoms Used in Refinement | |
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Non-Hydrogen Atoms | Number |
Protein Atoms | 4744 |
Nucleic Acid Atoms | |
Solvent Atoms | 100 |
Heterogen Atoms | 20 |
Software
Software | |
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Software Name | Purpose |
REFMAC | refinement |
XDS | data reduction |
SCALA | data scaling |
MOLREP | phasing |