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Crystal structures of the GacH receptor of Streptomyces glaucescens GLA.O in the unliganded form and in complex with acarbose and an acarbose homolog. Comparison with acarbose-loaded maltose binding protein of Salmonella typhimurium.
Crystallization Crystalization Experiments ID Method pH Temperature Details 1 VAPOR DIFFUSION, HANGING DROP 4 291 2.5 M (NH4)2SO4, 100 mM citric acid, pH 4.0, VAPOR DIFFUSION, HANGING DROP, temperature 291K
Crystal Properties Matthews coefficient Solvent content 2.38 48.25
Crystal Data Unit Cell Length ( Å ) Angle ( ˚ ) a = 72.177 α = 90 b = 72.177 β = 90 c = 160.454 γ = 90
Symmetry Space Group P 41 21 2
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 ADSC QUANTUM 210 mirrors 2008-10-21 M SINGLE WAVELENGTH
Radiation Source ID # Source Type Wavelength List Synchrotron Site Beamline 1 SYNCHROTRON BESSY BEAMLINE 14.1 0.91841 BESSY 14.1
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 1.55 65.8 92.8 0.063 15.5 4.5 60067
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 1.55 1.61 76.9 0.401 3.8 9134
Refinement Statistics Diffraction ID Structure Solution Method Cross Validation method Resolution (High) Resolution (Low) Number Reflections (Observed) Number Reflections (R-Free) Percent Reflections (Observed) 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 1.55 50 60067 3061 95.92 0.19 0.189 0.1905 0.22 0.2222 RANDOM 24.757
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] 0.49 0.49 -0.98
RMS Deviations Key Refinement Restraint Deviation r_dihedral_angle_2_deg 38.729 r_dihedral_angle_4_deg 16.774 r_dihedral_angle_3_deg 13.497 r_dihedral_angle_1_deg 5.34 r_scangle_it 3.157 r_scbond_it 1.976 r_angle_refined_deg 1.306 r_mcangle_it 1.188 r_mcbond_it 0.763 r_nbtor_refined 0.308
RMS Deviations Key Refinement Restraint Deviation r_dihedral_angle_2_deg 38.729 r_dihedral_angle_4_deg 16.774 r_dihedral_angle_3_deg 13.497 r_dihedral_angle_1_deg 5.34 r_scangle_it 3.157 r_scbond_it 1.976 r_angle_refined_deg 1.306 r_mcangle_it 1.188 r_mcbond_it 0.763 r_nbtor_refined 0.308 r_nbd_refined 0.205 r_symmetry_vdw_refined 0.167 r_symmetry_hbond_refined 0.154 r_xyhbond_nbd_refined 0.122 r_chiral_restr 0.084 r_bond_refined_d 0.011 r_gen_planes_refined 0.006
Non-Hydrogen Atoms Used in Refinement Non-Hydrogen Atoms Number Protein Atoms 2933 Nucleic Acid Atoms Solvent Atoms 562 Heterogen Atoms 45
Software Software Software Name Purpose DENZO data reduction SCALEPACK data scaling MOLREP phasing REFMAC refinement PDB_EXTRACT data extraction