8QF1
STRUCTURE OF THE CATALYTIC SUBUNIT OF PROTEIN KINASE CK2 (CK2ALPHA') IN COMPLEX WITH THE NON-HYDROLYZABLE GTP ANALOGUE GMPPNP
X-RAY DIFFRACTION
Starting Model(s)
Initial Refinement Model(s) | |||
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Type | Source | Accession Code | Details |
experimental model | PDB | 6HMQ |
Crystallization
Crystalization Experiments | ||||
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ID | Method | pH | Temperature | Details |
1 | VAPOR DIFFUSION, SITTING DROP | 293 | 10 MIKROLITER CK2ALPHA' SOLUTION AFTER PROTEIN PURIFICATION (5 MG/ML CK2ALPHA' IN 500 MM NACL, 25 MM TRIS/HCl, PH 8.5) WERE MIXED WITH 5 MIKROLITER RESERVOIR SOLUTION [810 MM LICL, 28% (W/V) PEG 6000, 100 MM TRIS/HCL, PH 8.5]. AFTER EQUILIBRATION (SITTING DROP PLATES; VAPOUR DIFFUSION), CRYSTALLIZATION WAS INITIATED BY MICROSEEDING. THE CRYSTALS WERE OPTIMIZED BY MACROSEEDING. THE GTP-ANALOGUE GMPPNP WAS COMBINED WITH THESE CRYSTALS BY SOAKING. A 20 MM GMPPNP SOLUTION IN 60 MM MGCL2 WAS PREPARED. FOR SOAKING, 3 MICROLITER OF THE CRYSTAL MOTHER LIQUOR WAS REMOVED AND REPLACED BY 3 MICROLITER OF 20 MM GMPPNP, 60 MM MGCL2. ALL STEPS WERE PERFORMED AT A TEMPERATURE OF 293 K. |
Crystal Properties | |
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Matthews coefficient | Solvent content |
2.19 | 43.87 |
Crystal Data
Unit Cell | |
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Length ( Å ) | Angle ( ˚ ) |
a = 46.628 | α = 90 |
b = 71.59 | β = 92.09 |
c = 102.101 | 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 | 100 | PIXEL | DECTRIS EIGER2 X CdTe 16M | 2021-09-16 | M | SINGLE WAVELENGTH |
Radiation Source | |||||
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ID # | Source | Type | Wavelength List | Synchrotron Site | Beamline |
1 | SYNCHROTRON | ESRF BEAMLINE ID23-1 | 0.885603 | ESRF | ID23-1 |
Data Collection
Overall | |||||||||||||||||||
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ID # | Resolution (High) | Resolution (Low) | Percent Possible (Observed) | R Merge I (Observed) | R Sym I (Observed) | Rrim I (All) | Rpim I (All) | CC (Half) | 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 | 1.318 | 102.033 | 57.8 | 0.144 | 0.144 | 0.17 | 0.088 | 0.973 | 4.1 | 3.5 | 91444 | 12.8 |
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) | Rrim I (All) | Rpim I (All) | CC (Half) | Mean I Over Sigma (Observed) | Redundancy | Number Unique Reflections (All) | |||||||
1 | 1.318 | 1.493 | 9.3 | 0.472 | 0.472 | 0.579 | 0.327 | 0.367 | 1.7 | 2.8 |
Refinement
Statistics | |||||||||||||||||||
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Diffraction ID | Structure Solution Method | Cross Validation method | 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 | Mean Isotropic B | |||||||
X-RAY DIFFRACTION | MOLECULAR REPLACEMENT | FREE R-VALUE | 1.32 | 58.6 | 1.35 | 91345 | 1370 | 57.77 | 0.2142 | 0.2139 | 0.2324 | 23.67 |
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] | |
RMS Deviations | |
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Key | Refinement Restraint Deviation |
f_dihedral_angle_d | 12.4736 |
f_angle_d | 0.6664 |
f_chiral_restr | 0.0618 |
f_plane_restr | 0.0053 |
f_bond_d | 0.0037 |
Non-Hydrogen Atoms Used in Refinement | |
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Non-Hydrogen Atoms | Number |
Protein Atoms | 5485 |
Nucleic Acid Atoms | |
Solvent Atoms | 607 |
Heterogen Atoms | 35 |
Software
Software | |
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Software Name | Purpose |
autoPROC | data reduction |
autoPROC | data scaling |
PHASER | phasing |
PHENIX | refinement |