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Crystal Structure of Aquaporin Z Tetramer Reveals both Open and Closed Water-conducting Channels
Starting Model(s) Initial Refinement Model(s) Type Source Accession Code Details experimental model PDB 1FX8
Crystallization Crystalization Experiments ID Method pH Temperature Details 1 VAPOR DIFFUSION, HANGING DROP 4.6 273 16% PEG3350, 0.75%beta-OG, 20% glycerol, 0.064 M Na Acetate, pH 4.6, VAPOR DIFFUSION, HANGING DROP, temperature 273K
Crystal Properties Matthews coefficient Solvent content 3 63
Crystal Data Unit Cell Length ( Å ) Angle ( ˚ ) a = 119.152 α = 90 b = 119.152 β = 90 c = 380.394 γ = 90
Symmetry Space Group P 41 2 2
Diffraction Diffraction Experiment ID # Crystal ID Scattering Type Data Collection Temperature Detector Detector Type Details Collection Date Monochromator Protocol 1 1 x-ray 273 CCD 2003-05-01 M SINGLE WAVELENGTH
Radiation Source ID # Source Type Wavelength List Synchrotron Site Beamline 1 SYNCHROTRON NSLS BEAMLINE X25 1.1 NSLS X25
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 50 99.6 0.012 9.8 2.8 46497 43.9
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 3.26 97 0.346 3.3 2.4 2239
Refinement Statistics Diffraction ID Structure Solution Method Cross Validation method Starting model Resolution (High) Resolution (Low) Cut-off Sigma (F) 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 X-RAY DIFFRACTION MOLECULAR REPLACEMENT THROUGHOUT 1fx8 3.2 10 3 43046 2143 96.4 0.2 0.186 0.186 0.1967 0.242 0.2462 RANDOM 36.5
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] 6.35 6.35 -12.69
RMS Deviations Key Refinement Restraint Deviation c_dihedral_angle_d 19.4 c_scangle_it 2.54 c_mcangle_it 2.08 c_scbond_it 1.76 c_angle_deg 1.4 c_mcbond_it 1.21 c_improper_angle_d 0.84 c_bond_d 0.008
Non-Hydrogen Atoms Used in Refinement Non-Hydrogen Atoms Number Protein Atoms 13144 Nucleic Acid Atoms Solvent Atoms 539 Heterogen Atoms 263
Software Software Software Name Purpose CNS refinement HKL-2000 data reduction SCALEPACK data scaling CNS phasing