1QAS
1-PHOSPHATIDYLINOSITOL-4,5-BISPHOSPHATE PHOSPHODIESTERASE DELTA 1
X-RAY DIFFRACTION
Starting Model(s)
Initial Refinement Model(s) | |||
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Type | Source | Accession Code | Details |
experimental model | PDB | 1ISD | CUBIC PHOSPHOLIPASE C |
Crystallization
Crystalization Experiments | ||||
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ID | Method | pH | Temperature | Details |
1 | clusters formed by mixing - used as seeds in hanging drops | 6.5 | NEEDLE CLUSTERS WERE FORMED BY MIXING EQUAL VOLUMES OF PROTEIN SOLUTION (22 MG/ML) WITH A WELL SOLUTION CONSISTING OF 0.1 M NA MES (PH 6.0), 0.2 M LICL, 20% GLYCEROL, AND 12-14 % PEG 8000. FRAGMENTS OF THE NEEDLE CLUSTERS WERE USED TO SEED HANGING DROPS. THE WELL SOLUTION USED FOR THE SEEDING EXPERIMENTS WAS ADJUSTED TO 0.1M NA MES (PH 6.5), 0.2 M LICL, 20 % GLYCEROL, AND 6-8 % PEG 8000., clusters formed by mixing - used as seeds in hanging drops |
Crystal Properties | |
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Matthews coefficient | Solvent content |
2.72 | 52.76 |
Crystal Data
Unit Cell | |
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Length ( Å ) | Angle ( ˚ ) |
a = 61.1 | α = 66.9 |
b = 75.4 | β = 85.4 |
c = 86.9 | γ = 89.8 |
Symmetry | |
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Space Group | P 1 |
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 | IMAGE PLATE | RIGAKU | MIRRORS | 1995-10-13 | M |
Radiation Source | |||||
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ID # | Source | Type | Wavelength List | Synchrotron Site | Beamline |
1 | ROTATING ANODE | RIGAKU RUH2R |
Data Collection
Overall | |||||||||||||||||||
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ID # | Resolution (High) | Resolution (Low) | Percent Possible (Observed) | R Merge I (Observed) | R Sym 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 | 2.4 | 60 | 86.4 | 0.063 | 0.063 | 10.9 | 1.76 | 47893 | -2 |
Highest Resolution Shell | |||||||||||||||||||
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ID # | Resolution (High) | Resolution (Low) | Percent Possible (All) | Percent Possible (Observed) | R Merge I (Observed) | R-Sym I (Observed) | Mean I Over Sigma (Observed) | Redundancy | Number Unique Reflections (All) | ||||||||||
2.4 | 2.49 | 44.5 | 0.296 | 0.296 | 2.1 | 1.42 |
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 | Mean Isotropic B | |||||||
X-RAY DIFFRACTION | MOLECULAR REPLACEMENT | FREE R | CUBIC PHOSPHOLIPASE C | 2.4 | 6 | 40803 | 2173 | 0.212 | 0.212 | 0.286 |
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 |
x_dihedral_angle_d | 24.9 |
x_angle_deg | 1.6 |
x_improper_angle_d | 1.377 |
x_bond_d | 0.011 |
x_bond_d_na | |
x_bond_d_prot | |
x_angle_d | |
x_angle_d_na | |
x_angle_d_prot | |
x_angle_deg_na |
Non-Hydrogen Atoms Used in Refinement | |
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Non-Hydrogen Atoms | Number |
Protein Atoms | 7982 |
Nucleic Acid Atoms | |
Solvent Atoms | 266 |
Heterogen Atoms |
Software
Software | |
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Software Name | Purpose |
X-PLOR | model building |
X-PLOR | refinement |
DENZO | data reduction |
SCALEPACK | data scaling |
X-PLOR | phasing |