2X5X
The crystal structure of PhaZ7 at atomic (1.2 Angstrom) resolution reveals details of the active site and suggests a substrate binding mode
X-RAY DIFFRACTION
Starting Model(s)
Initial Refinement Model(s) | |||
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Type | Source | Accession Code | Details |
experimental model | PDB | 2VTV | PDB ENTRY 2VTV |
Crystallization
Crystalization Experiments | ||||
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ID | Method | pH | Temperature | Details |
1 | VAPOR DIFFUSION, HANGING DROP | 7 | 289 | PHAZ7 WAS CRYSTALLIZED IN THE PRESENCE OF PMSF USING THE HANGING DROP VAPOR DIFFUSION METHOD AT 16 C. THE WELL SOLUTION CONSISTED OF 20% W/V PEG3350 AND 0.2 M NA IODIDE AND A 0.1 M PMSF STOCK SOLUTION IN ISOPROPANOL WAS ADDED TO THE WELL TO A FINAL CONCENTRATION OF 10 MM.A 1.5 MICROLITER PROTEIN SOLUTION WAS MIXED WITH AN EQUAL VOLUME OF WELL SOLUTION ON SILICONIZED COVERSLIPS. |
Crystal Properties | |
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Matthews coefficient | Solvent content |
2.57 | 52.22 |
Crystal Data
Unit Cell | |
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Length ( Å ) | Angle ( ˚ ) |
a = 49.63 | α = 90 |
b = 140.58 | β = 90 |
c = 56.75 | γ = 90 |
Symmetry | |
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Space Group | P 21 21 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 | CCD | ADSC CCD | 2008-03-20 | M | SINGLE WAVELENGTH |
Radiation Source | |||||
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ID # | Source | Type | Wavelength List | Synchrotron Site | Beamline |
1 | SYNCHROTRON | ESRF BEAMLINE ID14-2 | ESRF | ID14-2 |
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 | 1.2 | 20 | 99.9 | 0.1 | 11.1 | 5.9 | 124737 | 3.5 |
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 | 1.2 | 1.23 | 99.9 | 0.43 | 3.6 | 99.9 |
Refinement
Statistics | |||||||||||||||||||
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Diffraction ID | Structure Solution Method | Cross Validation method | Starting model | Resolution (High) | Resolution (Low) | Number Reflections (All) | Number Reflections (R-Free) | Percent Reflections (Observed) | R-Factor (All) | R-Factor (Observed) | R-Work | R-Free | R-Free Selection Details | Mean Isotropic B | |||||
X-RAY DIFFRACTION | MOLECULAR REPLACEMENT | FREE R-VALUE | PDB ENTRY 2VTV | 1.2 | 20 | 98593 | 95 | 0.1392 | 0.139 | 0.176 | RANDOM |
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] | |
Coordinate Error | ||
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Structure Solution Method | Refinement High Resolution | Refinement Low Resolution |
16 | 3140 |
RMS Deviations | |
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Key | Refinement Restraint Deviation |
s_anti_bump_dis_restr | 0.519 |
s_approx_iso_adps | 0.091 |
s_non_zero_chiral_vol | 0.077 |
s_zero_chiral_vol | 0.073 |
s_similar_adp_cmpnt | 0.033 |
s_from_restr_planes | 0.0286 |
s_angle_d | 0.026 |
s_bond_d | 0.011 |
s_rigid_bond_adp_cmpnt | 0.004 |
s_similar_dist |
Non-Hydrogen Atoms Used in Refinement | |
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Non-Hydrogen Atoms | Number |
Protein Atoms | 2549 |
Nucleic Acid Atoms | |
Solvent Atoms | 563 |
Heterogen Atoms | 29 |
Software
Software | |
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Software Name | Purpose |
SHELXL-97 | refinement |
XDS | data reduction |
XDS | data scaling |
PHASER | phasing |