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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 28% PEG 550, 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 = 109.186 α = 90 b = 109.186 β = 90 c = 84.563 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 2005-11-14 M SINGLE WAVELENGTH
Radiation Source ID # Source Type Wavelength List Synchrotron Site Beamline 1 SYNCHROTRON SLS BEAMLINE X06SA 0.96115 SLS X06SA
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 2.1 50 89.5 0.079 13.28 30006 -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 2.1 2.2 92.4 0.821 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-Factor (All) R-Factor (Observed) R-Work (Depositor) R-Free (Depositor) R-Free (DCC) R-Free Selection Details Mean Isotropic B X-RAY DIFFRACTION MOLECULAR REPLACEMENT THROUGHOUT PDB ENTRY 1XQF 2.1 15 33421 28433 1534 89.69 0.17195 0.17195 0.17035 0.20256 0.2556 RANDOM 52.447
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] 3.52 1.76 3.52 -5.28
RMS Deviations Key Refinement Restraint Deviation r_dihedral_angle_2_deg 28.979 r_dihedral_angle_4_deg 22.411 r_dihedral_angle_3_deg 13.769 r_dihedral_angle_1_deg 5.443 r_scangle_it 5.15 r_scbond_it 3.954 r_mcangle_it 2.435 r_mcbond_it 1.582 r_angle_refined_deg 1.342 r_nbtor_refined 0.317
RMS Deviations Key Refinement Restraint Deviation r_dihedral_angle_2_deg 28.979 r_dihedral_angle_4_deg 22.411 r_dihedral_angle_3_deg 13.769 r_dihedral_angle_1_deg 5.443 r_scangle_it 5.15 r_scbond_it 3.954 r_mcangle_it 2.435 r_mcbond_it 1.582 r_angle_refined_deg 1.342 r_nbtor_refined 0.317 r_symmetry_vdw_refined 0.25 r_nbd_refined 0.222 r_symmetry_hbond_refined 0.202 r_xyhbond_nbd_refined 0.16 r_chiral_restr 0.09 r_bond_refined_d 0.013 r_gen_planes_refined 0.005 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 2634 Nucleic Acid Atoms Solvent Atoms 94 Heterogen Atoms 14
Software Software Software Name Purpose MOLREP phasing REFMAC refinement MAR345 data collection XDS data reduction XSCALE data scaling