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Crystal structure of isomaltase in complex with maltose
Starting Model(s) Initial Refinement Model(s) Type Source Accession Code Details experimental model PDB 3AJ7 PDB ENTRY 3AJ7
Crystallization Crystalization Experiments ID Method pH Temperature Details 1 VAPOR DIFFUSION, HANGING DROP 7.3 288 50mM HEPES, 0.2M lithium acetate, 21% (w/v) PEG 3350, 0.2M maltose , pH 7.3, VAPOR DIFFUSION, HANGING DROP, temperature 288K
Crystal Properties Matthews coefficient Solvent content 2.47 50.23
Crystal Data Unit Cell Length ( Å ) Angle ( ˚ ) a = 95.474 α = 90 b = 115.373 β = 91.07 c = 61.594 γ = 90
Symmetry Space Group C 1 2 1
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 2010-05-15 M SINGLE WAVELENGTH
Radiation Source ID # Source Type Wavelength List Synchrotron Site Beamline 1 SYNCHROTRON PHOTON FACTORY BEAMLINE AR-NW12A 1.0000 Photon Factory AR-NW12A
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 18.83 92.9 0.062 18 131180 121866 2 2
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 1.42 94 0.12 10.5
Refinement Statistics Diffraction ID Structure Solution Method Cross Validation method Starting model 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 PDB ENTRY 3AJ7 1.4 18.83 115699 6163 92.72 0.17991 0.17915 0.1763 0.19432 0.1906 RANDOM 11.585
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]
RMS Deviations Key Refinement Restraint Deviation r_dihedral_angle_2_deg 34.194 r_dihedral_angle_4_deg 16.884 r_dihedral_angle_3_deg 11.304 r_dihedral_angle_1_deg 5.896 r_scangle_it 2.326 r_scbond_it 1.472 r_angle_refined_deg 1.427 r_mcangle_it 0.917 r_mcbond_it 0.559 r_nbtor_refined 0.314
RMS Deviations Key Refinement Restraint Deviation r_dihedral_angle_2_deg 34.194 r_dihedral_angle_4_deg 16.884 r_dihedral_angle_3_deg 11.304 r_dihedral_angle_1_deg 5.896 r_scangle_it 2.326 r_scbond_it 1.472 r_angle_refined_deg 1.427 r_mcangle_it 0.917 r_mcbond_it 0.559 r_nbtor_refined 0.314 r_nbd_refined 0.195 r_symmetry_vdw_refined 0.171 r_metal_ion_refined 0.116 r_chiral_restr 0.084 r_xyhbond_nbd_refined 0.072 r_symmetry_hbond_refined 0.071 r_bond_refined_d 0.007 r_gen_planes_refined 0.005
Non-Hydrogen Atoms Used in Refinement Non-Hydrogen Atoms Number Protein Atoms 4831 Nucleic Acid Atoms Solvent Atoms 601 Heterogen Atoms 13
Software Software Software Name Purpose HKL-2000 data collection MOLREP phasing REFMAC refinement HKL-2000 data reduction HKL-2000 data scaling