1HJF
Alteration of the co-substrate selectivity of deacetoxycephalosporin C synthase: The role of arginine-258
X-RAY DIFFRACTION
Starting Model(s)
Initial Refinement Model(s) | |||
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Type | Source | Accession Code | Details |
experimental model | PDB | 1RXG | PDB ENTRY 1RXG |
Crystallization
Crystalization Experiments | ||||
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ID | Method | pH | Temperature | Details |
1 | VAPOR DIFFUSION, HANGING DROP | 7 | 293 | HANGING DROP AT 20 DEGREES C. 100 MM HEPES-NAOH, PH 7.0, 6% (W/V) GLYCEROL, 5 MM 2-OXO-4-METHYLPENTANOATE, 1.5-1.7 M AMMONIUM SULPHATE CRYSTALS SOAKED IN 5 MM IRON(II) SULPHATE IN MOTHER LIQUOR UNDER ANAEROBIC CONDITIONS BEFORE DATA COLLECTION. |
Crystal Properties | |
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Matthews coefficient | Solvent content |
2.42 | 48.78 |
Crystal Data
Unit Cell | |
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Length ( ? ) | Angle ( ? ) |
a = 106.933 | ¦Á = 90 |
b = 106.933 | ¦Â = 90 |
c = 70.819 | ¦Ã = 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 4 | 1999-07-10 | M | SINGLE WAVELENGTH |
Radiation Source | |||||
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ID # | Source | Type | Wavelength List | Synchrotron Site | Beamline |
1 | SYNCHROTRON | SRS BEAMLINE PX9.6 | SRS | PX9.6 |
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 | 1.6 | 100 | 95.7 | 0.07 | 7.5 | 3.3 | 32966 | 1 | 28.3 |
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 | 1.6 | 1.69 | 95.7 | 0.728 | 1 | 3.2 |
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 | PDB ENTRY 1RXG | 1.6 | 19.38 | 35225 | 1442 | 88.3 | 0.241 | 0.241 | 0.269 | RANDOM | 30.3 |
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] | |
-1.8 | -0.21 | -1.8 | 3.61 |
RMS Deviations | |
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Key | Refinement Restraint Deviation |
c_dihedral_angle_d | 22.6 |
c_angle_deg | 1.2 |
c_improper_angle_d | 0.66 |
c_bond_d | 0.013 |
c_bond_d_na | |
c_bond_d_prot | |
c_angle_d | |
c_angle_d_na | |
c_angle_d_prot | |
c_angle_deg_na |
Non-Hydrogen Atoms Used in Refinement | |
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Non-Hydrogen Atoms | Number |
Protein Atoms | 2147 |
Nucleic Acid Atoms | |
Solvent Atoms | 99 |
Heterogen Atoms | 10 |
Software
Software | |
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Software Name | Purpose |
CNS | refinement |
MOSFLM | data reduction |
SCALA | data scaling |
CNS | phasing |