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Crystal structure of barley alpha-amylase isozyme 1 (amy1) in complex with acarbose
Starting Model(s) Initial Refinement Model(s) Type Source Accession Code Details experimental model PDB 1HT6 PDB ENTRY 1HT6
Crystallization Crystalization Experiments ID Method pH Temperature Details 1 VAPOR DIFFUSION, HANGING DROP 6.7 290 PEG 8000, ISOPROPANOL, pH 6.7, VAPOR DIFFUSION, HANGING DROP, temperature 290K
Crystal Properties Matthews coefficient Solvent content 2.34 47.46
Crystal Data Unit Cell Length ( Å ) Angle ( ˚ ) a = 93.39 α = 90 b = 72.92 β = 90 c = 61.39 γ = 90
Symmetry Space Group P 21 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 IMAGE PLATE MARRESEARCH 1999-11-10 M SINGLE WAVELENGTH
Radiation Source ID # Source Type Wavelength List Synchrotron Site Beamline 1 ROTATING ANODE ENRAF-NONIUS FR591 1.5418
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 17.36 100 0.183 4.2 3.5 27344 27344 5.5
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) 2 2.05 100 0.666 1.2 3.1 1989
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 FOURIER DIFFERENCE THROUGHOUT PDB ENTRY 1HT6 2 17.36 27308 2399 94.2 0.18 0.18 0.1856 0.231 0.2344 RANDOM 13.8
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] -1.09 -2.25 3.34
RMS Deviations Key Refinement Restraint Deviation c_dihedral_angle_d 23.4 c_scangle_it 2.78 c_scbond_it 2.13 c_mcangle_it 1.84 c_angle_deg 1.5 c_mcbond_it 1.36 c_improper_angle_d 0.9 c_bond_d 0.01
Non-Hydrogen Atoms Used in Refinement Non-Hydrogen Atoms Number Protein Atoms 3136 Nucleic Acid Atoms Solvent Atoms 549 Heterogen Atoms 113
Software Software Software Name Purpose CNS refinement DENZO data reduction CCP4 data scaling CNS phasing