☰ Navigation Tabs
Double layered 2D crystal structure of AQUAPORIN-4 (AQP4M23) at 3.2 a resolution by electron crystallography
Starting Model(s) Initial Refinement Model(s) Type Source Accession Code Details experimental model PDB 1J4N PDB ENTRY 1J4N
Crystallization Crystalization Experiments ID Method pH Temperature Details 1 dialysys 6 293 10mM MES(pH 6.0), 100mM NaCl, 50mM MgCl2, 2mM DTT, 1% glycerol, dialysys, temperature 293K
Crystal Properties Matthews coefficient Solvent content 2.96 58.41
Crystal Data Unit Cell Length ( Å ) Angle ( ˚ ) a = 69 α = 90 b = 69 β = 90 c = 160 γ = 90
Symmetry Space Group P 4 21 2
Diffraction Diffraction Experiment ID # Crystal ID Scattering Type Data Collection Temperature Detector Detector Type Details Collection Date Monochromator Protocol 1 1 electron 4.2 CCD GATAN ULTRASCAN 2002-04-01 M SINGLE WAVELENGTH
Radiation Source ID # Source Type Wavelength List Synchrotron Site Beamline 1 ELECTRON MICROSCOPE 0.01968
Data Collection Overall ID # Resolution (High) Resolution (Low) Percent Possible (Observed) R Merge 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 3.2 22.21 87 0.223 6888 5992
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) 1 3.2 3.4 85.8 0.445
Refinement Statistics Diffraction ID Structure Solution Method Cross Validation method Starting model Resolution (High) Resolution (Low) Number Reflections (All) Number Reflections (Observed) Number Reflections (R-Free) Percent Reflections (Observed) R-Factor (All) R-Factor (Observed) R-Work (Depositor) R-Work (DCC) R-Free (Depositor) R-Free (DCC) R-Free Selection Details Mean Isotropic B ELECTRON CRYSTALLOGRAPHY MOLECULAR REPLACEMENT THROUGHOUT PDB ENTRY 1J4N 3.2 22.21 6888 5992 337 87 0.286 0.283 0.283 0.2979 0.338 0.3596 RANDOM 53.7
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] -25.43 -25.43 50.86
RMS Deviations Key Refinement Restraint Deviation c_scangle_it 19.19 c_dihedral_angle_d 19.1 c_mcangle_it 16.9 c_scbond_it 13.55 c_mcbond_it 10.9 c_angle_deg 1.6 c_improper_angle_d 1.1 c_bond_d 0.011
Non-Hydrogen Atoms Used in Refinement Non-Hydrogen Atoms Number Protein Atoms 1659 Nucleic Acid Atoms Solvent Atoms Heterogen Atoms
Software Software Software Name Purpose CNS refinement MRC data reduction MRC data scaling CNS phasing
Sample AQUAPORIN 4 CRYSTAL
Specimen Preparation Sample Aggregation State 2D ARRAY Embedding Material trehalose Embedding Details 7% trehalose
3D Reconstruction Reconstruction Method CRYSTALLOGRAPHY Number of Particles Reported Resolution (Å) Resolution Method Other Details Refinement Type Symmetry Type 2D CRYSTAL
Imaging Experiment 1 Date of Experiment Temperature (Kelvin) Microscope Model JEOL 3000SFF Minimum Defocus (nm) Maximum Defocus (nm) Minimum Tilt Angle (degrees) Maximum Tilt Angle (degrees) Nominal CS Imaging Mode DIFFRACTION Specimen Holder Model Nominal Magnification Calibrated Magnification Source FIELD EMISSION GUN Acceleration Voltage (kV) 300 Imaging Details diffraction and images