1HKB
CRYSTAL STRUCTURE OF RECOMBINANT HUMAN BRAIN HEXOKINASE TYPE I COMPLEXED WITH GLUCOSE AND GLUCOSE-6-PHOSPHATE
X-RAY DIFFRACTION
Crystallization
Crystalization Experiments | ||||
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ID | Method | pH | Temperature | Details |
1 | 5.6 | HEXOKINASE WAS CRYSTALLIZED BY MIXING 20 MG/ML OF PROTEIN SOLUTION WITH 6% PEG 8000, 0.1 M NA CITRATE, PH 5.6, 0.1 M NA ACETATE, 20 MM GLUCOSE-6-PHOSPHATE, AND PRESUMABLE TRACE AMOUNT OF GLUCOSE LEFT AFTER PURIFICATION; THEN SOAKED WITH 10 MM G6P AND 5 MM GLUCOSE. |
Crystal Properties | |
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Matthews coefficient | Solvent content |
3.03 | 52 |
Crystal Data
Unit Cell | |
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Length ( Å ) | Angle ( ˚ ) |
a = 83 | α = 90 |
b = 122 | β = 92 |
c = 123 | γ = 90 |
Symmetry | |
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Space Group | P 1 21 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 | 277 | IMAGE PLATE | MARRESEARCH | MIRRORS | 1997-02-09 | M |
Radiation Source | |||||
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ID # | Source | Type | Wavelength List | Synchrotron Site | Beamline |
1 | SYNCHROTRON | SSRL BEAMLINE BL7-1 | SSRL | BL7-1 |
Data Collection
Overall | |||||||||||||||||||
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ID # | Resolution (High) | Resolution (Low) | Percent Possible (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 | 2.79 | 38 | 96.9 | 0.055 | 13 | 1.9 | 113243 | 62.4 |
Highest Resolution Shell | |||||||||||||||||||
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ID # | Resolution (High) | Resolution (Low) | Percent Possible (All) | Percent Possible (Observed) | R-Sym I (Observed) | Mean I Over Sigma (Observed) | Redundancy | Number Unique Reflections (All) | |||||||||||
2.8 | 2.9 | 88 | 0.32 | 3 | 1.4 |
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 (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 | YEAST HEXOKINASE COMPLEXED WITH GLUCOSE (BARTUNIK, UNPUBLISHED) | 2.8 | 8 | 2 | 55607 | 5653 | 96.4 | 0.2 | 0.2 | 0.27 | RANDOM | 44 |
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 | 25.3 |
x_scangle_it | 9.38 |
x_scbond_it | 6.07 |
x_mcangle_it | 5.97 |
x_mcbond_it | 3.83 |
x_angle_deg | 1.2 |
x_improper_angle_d | 0.55 |
x_bond_d | 0.007 |
x_bond_d_na | |
x_bond_d_prot |
Non-Hydrogen Atoms Used in Refinement | |
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Non-Hydrogen Atoms | Number |
Protein Atoms | 14066 |
Nucleic Acid Atoms | |
Solvent Atoms | 142 |
Heterogen Atoms | 116 |
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 |