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Crystallographic studies on two bioisosteric analogues, N-acetyl-beta-D-glucopyranosylamine and N-trifluoroacetyl-beta-D-glucopyranosylamine, potent inhibitors of muscle glycogen phosphorylase
Starting Model(s) Initial Refinement Model(s) Type Source Accession Code Details experimental model PDB 2PRJ
Crystallization Crystalization Experiments ID Method pH Temperature Details 1 SMALL TUBES 6.7 289 10mM Bes buffer, 3mM DDT, pH 6.7, SMALL TUBES, temperature 289K
Crystal Properties Matthews coefficient Solvent content 2.43 48.91
Crystal Data Unit Cell Length ( Å ) Angle ( ˚ ) a = 128.789 α = 90 b = 128.789 β = 90 c = 116.234 γ = 90
Symmetry Space Group P 43 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 298 CCD ADSC QUANTUM 4 2001-03-16 M SINGLE WAVELENGTH
Radiation Source ID # Source Type Wavelength List Synchrotron Site Beamline 1 SYNCHROTRON SRS BEAMLINE PX9.6 0.87 SRS PX9.6
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 1.8 28.07 99 0.041 11.9 3.7 568131 24.9
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 1.8 1.83 97.5 0.42 1.9 3.6 4331
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-Free (Depositor) R-Free Selection Details Mean Isotropic B X-RAY DIFFRACTION FOURIER SYNTHESIS THROUGHOUT 2PRJ 1.8 28.07 89583 4511 98.8 0.191 0.191 0.216 RANDOM 32.9
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] 3.49 3.49 -6.98
RMS Deviations Key Refinement Restraint Deviation c_dihedral_angle_d 22 c_scangle_it 3.38 c_scbond_it 2.18 c_mcangle_it 2.04 c_angle_deg 1.3 c_mcbond_it 1.3 c_improper_angle_d 0.78 c_bond_d 0.006
Non-Hydrogen Atoms Used in Refinement Non-Hydrogen Atoms Number Protein Atoms 6580 Nucleic Acid Atoms Solvent Atoms 402 Heterogen Atoms 33
Software Software Software Name Purpose CNS refinement HKL-2000 data reduction SCALEPACK data scaling CNS phasing