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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 2.37 48.11
Crystal Data Unit Cell Length ( Å ) Angle ( ˚ ) a = 72.093 α = 90 b = 72.093 β = 90 c = 160.386 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 1.4 65.8 95.3 0.052 25.8 3.3 82045
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 1.4 1.45 77 0.319 1.6 12337
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 1.4 50 82045 4097 97.5 0.203 0.201 0.2028 0.227 0.2307 RANDOM 23.585
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] 0.39 0.39 -0.77
RMS Deviations Key Refinement Restraint Deviation r_dihedral_angle_2_deg 38.459 r_dihedral_angle_4_deg 15.96 r_dihedral_angle_3_deg 13.68 r_dihedral_angle_1_deg 5.535 r_scangle_it 3.619 r_scbond_it 2.485 r_angle_refined_deg 1.732 r_mcangle_it 1.656 r_mcbond_it 1.172 r_nbtor_refined 0.315
RMS Deviations Key Refinement Restraint Deviation r_dihedral_angle_2_deg 38.459 r_dihedral_angle_4_deg 15.96 r_dihedral_angle_3_deg 13.68 r_dihedral_angle_1_deg 5.535 r_scangle_it 3.619 r_scbond_it 2.485 r_angle_refined_deg 1.732 r_mcangle_it 1.656 r_mcbond_it 1.172 r_nbtor_refined 0.315 r_symmetry_vdw_refined 0.262 r_nbd_refined 0.215 r_symmetry_hbond_refined 0.205 r_xyhbond_nbd_refined 0.153 r_chiral_restr 0.116 r_bond_refined_d 0.018 r_gen_planes_refined 0.01
Non-Hydrogen Atoms Used in Refinement Non-Hydrogen Atoms Number Protein Atoms 2933 Nucleic Acid Atoms Solvent Atoms 474 Heterogen Atoms 49
Software Software Software Name Purpose DENZO data reduction SCALEPACK data scaling MOLREP phasing REFMAC refinement PDB_EXTRACT data extraction