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An unusual twin-His arrangement in the pore of ammonia channels is essential for substrate conductance
Starting Model(s) Initial Refinement Model(s) Type Source Accession Code Details experimental model PDB 1XQF PDB ENTRY 1XQF
Crystallization Crystalization Experiments ID Method pH Temperature Details 1 VAPOR DIFFUSION, SITTING DROP 4.6 298 30% PEG 400, 0.1M SODIUM ACETATE, 0.2M AMMONIUM SULFATE, PH 4.6, VAPOR DIFFUSION, SITTING DROP, TEMPERATURE 298K, pH 4.60
Crystal Properties Matthews coefficient Solvent content 3.3 62.77
Crystal Data Unit Cell Length ( Å ) Angle ( ˚ ) a = 110.512 α = 90 b = 110.512 β = 90 c = 84.179 γ = 120
Diffraction Diffraction Experiment ID # Crystal ID Scattering Type Data Collection Temperature Detector Detector Type Details Collection Date Monochromator Protocol 1 1 x-ray 100 CCD MARMOSAIC 225 mm CCD 2005-06-13 M SINGLE WAVELENGTH
Radiation Source ID # Source Type Wavelength List Synchrotron Site Beamline 1 SYNCHROTRON SLS BEAMLINE X10SA 0.901031 SLS X10SA
Data Collection Overall ID # Resolution (High) Resolution (Low) Percent Possible (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 50 99 0.093 20.4 36960 -3
Highest Resolution Shell ID # Resolution (High) Resolution (Low) Percent Possible (All) Percent Possible (Observed) R-Sym I (Observed) Mean I Over Sigma (Observed) Redundancy Number Unique Reflections (All) 1 2 2.1 100 0.564 6.19
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 X-RAY DIFFRACTION MOLECULAR REPLACEMENT THROUGHOUT PDB ENTRY 1XQF 2 15 39448 35007 1857 93.45 0.15732 0.15732 0.15677 0.1961 0.16796 0.2059 RANDOM 32.957
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] 0.89 0.45 0.89 -1.34
RMS Deviations Key Refinement Restraint Deviation r_dihedral_angle_2_deg 28.847 r_dihedral_angle_3_deg 12.067 r_dihedral_angle_4_deg 10.393 r_scangle_it 3.488 r_scbond_it 2.405 r_dihedral_angle_1_deg 1.669 r_mcangle_it 1.515 r_angle_refined_deg 1.24 r_mcbond_it 0.966 r_nbtor_refined 0.308
RMS Deviations Key Refinement Restraint Deviation r_dihedral_angle_2_deg 28.847 r_dihedral_angle_3_deg 12.067 r_dihedral_angle_4_deg 10.393 r_scangle_it 3.488 r_scbond_it 2.405 r_dihedral_angle_1_deg 1.669 r_mcangle_it 1.515 r_angle_refined_deg 1.24 r_mcbond_it 0.966 r_nbtor_refined 0.308 r_nbd_refined 0.193 r_symmetry_vdw_refined 0.166 r_xyhbond_nbd_refined 0.107 r_chiral_restr 0.099 r_symmetry_hbond_refined 0.052 r_bond_refined_d 0.011 r_gen_planes_refined 0.008 r_bond_other_d r_angle_other_deg r_gen_planes_other r_nbd_other r_nbtor_other r_xyhbond_nbd_other r_metal_ion_refined r_metal_ion_other r_symmetry_vdw_other r_symmetry_hbond_other r_symmetry_metal_ion_refined r_symmetry_metal_ion_other r_mcbond_other r_rigid_bond_restr r_sphericity_free r_sphericity_bonded
Non-Hydrogen Atoms Used in Refinement Non-Hydrogen Atoms Number Protein Atoms 2641 Nucleic Acid Atoms Solvent Atoms 97 Heterogen Atoms 14
Software Software Software Name Purpose MAR345 data collection MOLREP phasing REFMAC refinement XDS data reduction XSCALE data scaling