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Crystal Structure of the human Sec23a/24a heterodimer, complexed with the SNARE protein Sec22b
Starting Model(s) Initial Refinement Model(s) Type Source Accession Code Details experimental model PDB 1M2V PDB entries 1M2V and 1IFQ experimental model PDB 1IFQ PDB entries 1M2V and 1IFQ
Crystallization Crystalization Experiments ID Method pH Temperature Details 1 VAPOR DIFFUSION, HANGING DROP 7.9 298 10% (w/v) PEG 4000, 0.5M sodium acetate and 50 mM Tris buffer, pH 7.9, VAPOR DIFFUSION, HANGING DROP, temperature 298.0K
Crystal Properties Matthews coefficient Solvent content 2.42 49.08
Crystal Data Unit Cell Length ( Å ) Angle ( ˚ ) a = 148.2 α = 90 b = 97.4 β = 90.23 c = 129.62 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 110 CCD MAR CCD 165 mm mirrors 2005-04-24 M SINGLE WAVELENGTH
Radiation Source ID # Source Type Wavelength List Synchrotron Site Beamline 1 SYNCHROTRON NSLS BEAMLINE X9A NSLS X9A
Data Collection Overall ID # Resolution (High) Resolution (Low) Percent Possible (Observed) R Merge I (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 2.6 30 97.1 0.083 0.065 5 3.01 55149
Highest Resolution Shell 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) 2.6 2.69 97.4 0.475 5499
Refinement Statistics Diffraction ID Structure Solution Method Starting model Resolution (High) Resolution (Low) Number Reflections (Observed) Number Reflections (R-Free) Percent Reflections (Observed) R-Work (Depositor) R-Work (DCC) R-Free (Depositor) R-Free (DCC) R-Free Selection Details Mean Isotropic B X-RAY DIFFRACTION MOLECULAR REPLACEMENT PDB entries 1M2V and 1IFQ 2.8 20 42329 2114 93.1 0.202 0.205 0.275 0.2023 Random 39.032
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] -0.2 9.183 2.836 -2.636
RMS Deviations Key Refinement Restraint Deviation c_scangle_it 6.416 c_mcangle_it 5.377 c_scbond_it 4.651 c_mcbond_it 3.533 c_angle_deg 1.428 c_bond_d 0.007
Non-Hydrogen Atoms Used in Refinement Non-Hydrogen Atoms Number Protein Atoms 12419 Nucleic Acid Atoms Solvent Atoms 220 Heterogen Atoms 2
Software Software Software Name Purpose DENZO data reduction SCALEPACK data scaling PHASER phasing CNS refinement PDB_EXTRACT data extraction HKL-2000 data collection HKL-2000 data reduction