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Crystal structure of calcium-dependent protein kinase 1 (CDPK1) from Cryptosporidium parvum in complex with inhibitor BKI-1941.
Starting Model(s) Initial Refinement Model(s) Type Source Accession Code Details experimental model PDB 9D8S
Crystallization Crystalization Experiments ID Method pH Temperature Details 1 VAPOR DIFFUSION, SITTING DROP 7.5 291 20% PEG 3350, 0.20 M Ammonium tartrate dibasic. CrpaA.01010.b.GT4.PW39259 at 16.8 mg/mL. 7 day soak in 2 mM inhibitor in crystallant. plate Liu-S-190 B1 , Puck: PSL-1409Cryo: 32.5% PEG 3350, 0.40 M Ammonium tartrate dibasic
Crystal Properties Matthews coefficient Solvent content 2.36 47.98
Crystal Data Unit Cell Length ( Å ) Angle ( ˚ ) a = 59.134 α = 90 b = 55.962 β = 105.33 c = 84.029 γ = 90
Symmetry Space Group P 1 21 1
Diffraction Diffraction Experiment ID # Crystal ID Scattering Type Data Collection Temperature Detector Detector Type Details Collection Date Monochromator Protocol 1 1 x-ray 100 PIXEL DECTRIS EIGER2 XE 9M 2025-08-09 M SINGLE WAVELENGTH
Radiation Source ID # Source Type Wavelength List Synchrotron Site Beamline 1 SYNCHROTRON NSLS-II BEAMLINE 19-ID 0.9786 NSLS-II 19-ID
Data Collection Overall ID # Resolution (High) Resolution (Low) Percent Possible (Observed) R Merge 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 2.78 46.05 99.7 0.077 0.084 0.033 0.999 14.5 6.7 13517
Highest Resolution Shell ID # Resolution (High) Resolution (Low) Percent Possible (All) Percent Possible (Observed) R Merge I (Observed) Rrim I (All) Rpim I (All) CC (Half) Mean I Over Sigma (Observed) Redundancy Number Unique Reflections (All) 1 2.78 2.85 100 1.477 1.591 0.586 0.628 7.2
Refinement Statistics 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 (Depositor) R-Work (DCC) R-Free (Depositor) R-Free (DCC) Mean Isotropic B X-RAY DIFFRACTION MOLECULAR REPLACEMENT FREE R-VALUE 2.78 40.52 1.34 13475 719 99.4 0.257 0.2545 0.2542 0.2996 0.2946
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 Key Refinement Restraint Deviation f_dihedral_angle_d 12.766 f_angle_d 0.526 f_chiral_restr 0.039 f_plane_restr 0.005 f_bond_d 0.002
Non-Hydrogen Atoms Used in Refinement Non-Hydrogen Atoms Number Protein Atoms 3157 Nucleic Acid Atoms Solvent Atoms 1 Heterogen Atoms 33
Software Software Software Name Purpose PHENIX refinement Aimless data scaling XDS data reduction PHASER phasing PDB_EXTRACT data extraction