4JAD
STRUCTURAL DETERMINATION OF THE A50T:S279G:S280K:V281K:K282E:H283N VARIANT OF CITRATE SYNTHASE from E. COLI
X-RAY DIFFRACTION
Crystallization
Crystalization Experiments | ||||
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ID | Method | pH | Temperature | Details |
1 | VAPOR DIFFUSION, HANGING DROP | 7.5 | 298 | 2% PEG, 2.0-2.3 M AMMONIUM SULFATE, 0.1 M NA HEPES, PH 7.5, HANGING DROP, TEMPERATURE 298K, VAPOR DIFFUSION, HANGING DROP |
Crystal Properties | |
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Matthews coefficient | Solvent content |
4.38 | 71.94 |
Crystal Data
Unit Cell | |
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Length ( Å ) | Angle ( ˚ ) |
a = 165.513 | α = 90 |
b = 165.513 | β = 90 |
c = 159.791 | γ = 120 |
Symmetry | |
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Space Group | H 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 | CCD | ADSC QUANTUM 315r | VERTICAL FOCUSING MIRROR | 2008-02-28 | M | SINGLE WAVELENGTH |
Radiation Source | |||||
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ID # | Source | Type | Wavelength List | Synchrotron Site | Beamline |
1 | SYNCHROTRON | SSRL BEAMLINE BL7-1 | 0.97 | SSRL | BL7-1 |
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 | 1.9 | 30 | 96.5 | 0.061 | 9.3 | 3.3 | 124116 |
Refinement
Statistics | |||||||||||||||||||
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Diffraction ID | Structure Solution 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 | 1K3P | 1.9 | 30 | 121151 | 5921 | 94.2 | 0.194 | 0.194 | 0.217 | RANDOM | 32.35 |
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] | |
RMS Deviations | |
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Key | Refinement Restraint Deviation |
c_bond_d | 0.007 |
c_bond_d_na | |
c_bond_d_prot | |
c_angle_d | |
c_angle_d_na | |
c_angle_d_prot | |
c_angle_deg | |
c_angle_deg_na | |
c_angle_deg_prot | |
c_dihedral_angle_d |
Non-Hydrogen Atoms Used in Refinement | |
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Non-Hydrogen Atoms | Number |
Protein Atoms | 6730 |
Nucleic Acid Atoms | |
Solvent Atoms | 526 |
Heterogen Atoms | 20 |
Software
Software | |
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Software Name | Purpose |
CNS | refinement |
MOSFLM | data reduction |
SCALA | data scaling |
CNS | phasing |