1M5U
CRYSTAL STRUCTURE OF THE RESPONSE REGULATOR DIVK. STRUCTURE AT PH 8.0 IN THE APO-FORM
X-RAY DIFFRACTION
Crystallization
Crystalization Experiments | ||||
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ID | Method | pH | Temperature | Details |
1 | VAPOR DIFFUSION, HANGING OR SITTING-DROP | 8 | 285 | MES 50mM PH6.0,PEG MME 550 32% At 285K. The Protein was Concentrated At 2 MG/ML In MES-NAOH PH 6.00 (20 mM), DTT (5 mM) And Mixed With An Equal Volume Of The Reservoir Solution Containing PEG MME 550 (32%), MES PH 6.00 (40 mM), DTT (5mM). Crystal Size (300X40X40 microM3) In 20microL Sitting Drops. VAPOR DIFFUSION, HANGING OR SITTING-DROP at 285K. Crystals Were Transferred In Reservoir Solutions Whose Ph Was Increased From 6.0 To 8.0 By Steps Of 0.5 Ph Units (The Soaking Time In Each Solution Was 12 Hours). Crystals Were Frozen In Liquid Propane After Soaking For A Few Seconds In Peg Mme 550 (50%), Tris Ph 8.0 (40 Mm)., pH 8.00 |
Crystal Properties | |
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Matthews coefficient | Solvent content |
1.8 | 31 |
Crystal Data
Unit Cell | |
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Length ( Å ) | Angle ( ˚ ) |
a = 36.67 | α = 90 |
b = 40.71 | β = 90 |
c = 66.29 | γ = 90 |
Symmetry | |
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Space Group | P 21 21 21 |
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 | MARRESEARCH | 2000-04-17 | M | SINGLE WAVELENGTH |
Radiation Source | |||||
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ID # | Source | Type | Wavelength List | Synchrotron Site | Beamline |
1 | SYNCHROTRON | ESRF BEAMLINE BM30A | 0.980 | ESRF | BM30A |
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 | 1.87 | 35 | 97.9 | 0.037 | 11.3 | 5.1 | 8414 | 8414 | 16.4 |
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) | |||||||||||
1.87 | 1.97 | 94.1 | 0.097 | 7.9 | 4.4 | 5050 |
Refinement
Statistics | |||||||||||||||||||
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Diffraction ID | Structure Solution Method | Cross Validation method | Starting model | Resolution (High) | Resolution (Low) | Cut-off Sigma (F) | Number Reflections (All) | Number Reflections (Observed) | 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 | FOURIER SYNTHESIS | THROUGHOUT | APO-DIVK SOLVED AT PH6 | 1.87 | 15 | 3 | 8414 | 8022 | 854 | 93.4 | 0.1901 | 0.1901 | 0.19 | 0.206 | RANDOM | 22.7 |
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] | |
-0.08 | 1.45 | -1.38 |
RMS Deviations | |
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Key | Refinement Restraint Deviation |
c_dihedral_angle_d | 22.6 |
c_scangle_it | 2.41 |
c_mcangle_it | 1.78 |
c_scbond_it | 1.64 |
c_angle_deg | 1.3 |
c_mcbond_it | 1.16 |
c_improper_angle_d | 0.71 |
c_bond_d | 0.005 |
Non-Hydrogen Atoms Used in Refinement | |
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Non-Hydrogen Atoms | Number |
Protein Atoms | 895 |
Nucleic Acid Atoms | |
Solvent Atoms | 64 |
Heterogen Atoms |
Software
Software | |
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Software Name | Purpose |
CNS | refinement |
MOSFLM | data reduction |
CCP4 | data scaling |
CNS | phasing |