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Electron crystallographic structure of lens Aquaporin-0 (AQP0) (lens MIP) at 1.9A resolution, in a closed pore state
Starting Model(s) Initial Refinement Model(s) Type Source Accession Code Details experimental model PDB 1SOR 1SOR - aquaporin-0 (MIP) strructure determined by electron crystallography
Crystallization Crystalization Experiments ID Method pH Temperature Details 1 MICRODIALYSIS 6 300 20mM MES pH 6.0, 50mM MgCl2, 5mM DTT, MICRODIALYSIS, temperature 300K
Crystal Properties Matthews coefficient Solvent content 3.03 59.44
Crystal Data Unit Cell Length ( Å ) Angle ( ˚ ) a = 65.5 α = 90 b = 65.5 β = 90 c = 160 γ = 90
Symmetry Space Group P 4 2 2
Diffraction Diffraction Experiment ID # Crystal ID Scattering Type Data Collection Temperature Detector Detector Type Details Collection Date Monochromator Protocol 1 1 electron 281 CCD GATAN 4k X 4k 2003-12-01 M SINGLE WAVELENGTH
Radiation Source ID # Source Type Wavelength List Synchrotron Site Beamline 1 ELECTRON MICROSCOPE JEM3000SFF
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 1.9 20 80 0.166 5.7 18.1
Highest Resolution Shell ID # Resolution (High) Resolution (Low) Percent Possible (All) Percent Possible (Observed) Mean I Over Sigma (Observed) Redundancy Number Unique Reflections (All) 1 1.9 2 70.5 2.5
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-Work (Depositor) R-Work (DCC) R-Free (Depositor) R-Free (DCC) R-Free Selection Details Mean Isotropic B ELECTRON CRYSTALLOGRAPHY MOLECULAR REPLACEMENT THROUGHOUT 1SOR - aquaporin-0 (MIP) strructure determined by electron crystallography 1.9 5 16180 14600 1580 0.258 0.2853 0.299 0.3206 RANDOM 58.4
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] -7.32 -7.32 14.64
RMS Deviations Key Refinement Restraint Deviation o_dihedral_angle_d 19.8 o_mcangle_it 2.61 o_scangle_it 2.44 o_angle_deg 1.9 o_scbond_it 1.63 o_mcbond_it 1.53 o_improper_angle_d 1.25 o_bond_d 0.016
Non-Hydrogen Atoms Used in Refinement Non-Hydrogen Atoms Number Protein Atoms 1783 Nucleic Acid Atoms Solvent Atoms 79 Heterogen Atoms 349
Software Software Software Name Purpose GATAN data collection GATAN data reduction CNS refinement GATAN data scaling CNS phasing
Specimen Preparation Sample Aggregation State 2D ARRAY Vitrification Instrument Cryogen Name NITROGEN Sample Vitrification Details Embedding Material trehalose Embedding Details 10% trehalose
3D Reconstruction Reconstruction Method CRYSTALLOGRAPHY Number of Particles Reported Resolution (Å) Resolution Method Other Details Refinement Type Symmetry Type 2D CRYSTAL
Data Acquisition Detector Type GENERIC GATAN (4k x 4k) Electron Dose (electrons/Å**2)
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 JEOL Nominal Magnification Calibrated Magnification Source FIELD EMISSION GUN Acceleration Voltage (kV) 300 Imaging Details
EM Software Task Software Package Version MODEL FITTING CNS 1.1 RECONSTRUCTION MRC