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Crystal structure of the catalytic region of human MASP-2 with specific inhibitor Analog 20
Starting Model(s) Initial Refinement Model(s) Type Source Accession Code Details experimental model PDB 1Q3X
Crystallization Crystalization Experiments ID Method pH Temperature Details 1 VAPOR DIFFUSION, HANGING DROP 293 1.0 uL of protein (0.62 mg/mL MASP2) was mixed with 1.0 uL of reservoir solution (0.1 M Tris-HCl pH 7.8, 0.16 M NaCl, 31% (w/v) PEG 6000, 10% (v/v) glycerol, and 200 uM Analog 20) and equilibrated against reservoir at 20 C. Crystals were cryoprotected in reservoir supplemented with 20% (v/v) glycerol.
Crystal Properties Matthews coefficient Solvent content 2.12 41.99
Crystal Data Unit Cell Length ( Å ) Angle ( ˚ ) a = 72.52 α = 90 b = 40.98 β = 97.82 c = 101.87 γ = 90
Symmetry Space Group C 1 2 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 EIGER X 9M 2023-11-08 M SINGLE WAVELENGTH
Radiation Source ID # Source Type Wavelength List Synchrotron Site Beamline 1 SYNCHROTRON CLSI BEAMLINE 08ID-1 0.95355 CLSI 08ID-1
Data Collection Overall ID # Resolution (High) Resolution (Low) Percent Possible (Observed) R Merge I (Observed) 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 1.76 20.49 99.71 0.1087 0.996 7.13 3.7 29662
Highest Resolution Shell ID # Resolution (High) Resolution (Low) Percent Possible (All) Percent Possible (Observed) R Merge I (Observed) CC (Half) Mean I Over Sigma (Observed) Redundancy Number Unique Reflections (All) 1 1.76 1.823 1.598 0.339 0.89
Refinement Statistics Diffraction ID Structure Solution Method Cross Validation method Resolution (High) Resolution (Low) Number Reflections (Observed) Number Reflections (R-Free) Percent Reflections (Observed) R-Factor (Observed) R-Work (Depositor) R-Free (Depositor) R-Free (DCC) Mean Isotropic B X-RAY DIFFRACTION MOLECULAR REPLACEMENT FREE R-VALUE 1.76 20.49 29655 1517 99.78 0.2005 0.1979 0.2538 0.2424
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]
Non-Hydrogen Atoms Used in Refinement Non-Hydrogen Atoms Number Protein Atoms 2388 Nucleic Acid Atoms Solvent Atoms 141 Heterogen Atoms 45
Software Software Software Name Purpose xia2 data reduction xia2 data scaling PHASER phasing PHENIX refinement