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Tris/maltotriose complex of chimaeric amylase from B. amyloliquefaciens and B. licheniformis at 2.2A
Starting Model(s) Initial Refinement Model(s) Type Source Accession Code Details experimental model PDB 1E3X
Crystallization Crystalization Experiments ID Method pH Temperature Details 1 VAPOR DIFFUSION, HANGING DROP 7.5 291 CRYSTALS WERE GROWN AT 18C USING THE HANGING DROP METHOD WITH 8-13% MONOMETHYL ETHER POLYETHYLENE GLYCOL 2000 OR 5000 AS PRECIPITANT. DROPS WERE BUFFERED WITH 0.1M TRIS/HCL PH 7.5 CONTAINING 5MM CACL2 AND THE PROTEIN CONCENTRATION WAS 30-35MG/ML. CRYSTALS WERE THEN SOAKED IN 10MM MALTOTRIOSE SOLUTION TO OBTAIN THE COMPLEX.
Crystal Properties Matthews coefficient Solvent content 2.34 47
Crystal Data Unit Cell Length ( Å ) Angle ( ˚ ) a = 52.72 α = 90 b = 78.27 β = 90 c = 238.86 γ = 90
Symmetry Space Group C 2 2 21
Diffraction Diffraction Experiment ID # Crystal ID Scattering Type Data Collection Temperature Detector Detector Type Details Collection Date Monochromator Protocol 1 1 x-ray 293 IMAGE PLATE RAXIS IIC 1994-10-15 M SINGLE WAVELENGTH
Radiation Source ID # Source Type Wavelength List Synchrotron Site Beamline 1 ROTATING ANODE RIGAKU RU200
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 2.2 30 94 0.05 33 5.2 23662
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 2.2 2.3 77 0.09 13 4.6
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-Work (Depositor) R-Work (DCC) R-Free (Depositor) R-Free Selection Details Mean Isotropic B X-RAY DIFFRACTION MOLECULAR REPLACEMENT THROUGHOUT 1E3X 2.2 20 23662 1141 94 0.13 0.1363 0.21 RANDOM 12.1
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 p_transverse_tor 28.8 p_staggered_tor 14.8 p_planar_tor 3.4 p_scangle_it 2.732 p_mcangle_it 1.936 p_scbond_it 1.772 p_mcbond_it 1.322 p_multtor_nbd 0.197 p_singtor_nbd 0.173 p_xyhbond_nbd 0.141
RMS Deviations Key Refinement Restraint Deviation p_transverse_tor 28.8 p_staggered_tor 14.8 p_planar_tor 3.4 p_scangle_it 2.732 p_mcangle_it 1.936 p_scbond_it 1.772 p_mcbond_it 1.322 p_multtor_nbd 0.197 p_singtor_nbd 0.173 p_xyhbond_nbd 0.141 p_chiral_restr 0.109 p_planar_d 0.031 p_angle_d 0.03 p_bond_d 0.01 p_plane_restr 0.01 p_angle_deg p_hb_or_metal_coord p_xhyhbond_nbd p_orthonormal_tor p_special_tor
Non-Hydrogen Atoms Used in Refinement Non-Hydrogen Atoms Number Protein Atoms 3900 Nucleic Acid Atoms Solvent Atoms 539 Heterogen Atoms 47
Software Software Software Name Purpose REFMAC refinement DENZO data reduction Agrovata data scaling ROTAVATA data scaling CCP4 phasing