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CRYSTAL STRUCTURE OF CHITINASE A FROM S. MARCESCENS AT 1.55 ANGSTROMS
Starting Model(s) Initial Refinement Model(s) Type Source Accession Code Details experimental model PDB 1CTN
Crystallization Crystalization Experiments ID Method pH Temperature Details 1 VAPOR DIFFUSION, HANGING DROP 7.2 293 0.75 M Citrate-Na pH 7.2, 20% (v/v) methanol, VAPOR DIFFUSION, HANGING DROP, temperature 293K
Crystal Properties Matthews coefficient Solvent content 3.3 63
Crystal Data Unit Cell Length ( Å ) Angle ( ˚ ) a = 199.497 α = 90 b = 131.825 β = 90 c = 59.368 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 100 IMAGE PLATE MARRESEARCH 1999-04-04 M SINGLE WAVELENGTH
Radiation Source ID # Source Type Wavelength List Synchrotron Site Beamline 1 SYNCHROTRON EMBL/DESY, HAMBURG BEAMLINE X11 EMBL/DESY, HAMBURG X11
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 1.55 10 99.8 0.032 27.8 5 112857 112857 19.6
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) 1.55 1.61 100 0.216 6.8 4.3 11176
Refinement Statistics Diffraction ID Structure Solution Method Starting model Resolution (High) Resolution (Low) Number Reflections (All) Number Reflections (Observed) Number Reflections (R-Free) Percent Reflections (Observed) R-Factor (All) R-Factor (Observed) R-Work (Depositor) R-Work (DCC) R-Free (Depositor) R-Free Selection Details Mean Isotropic B X-RAY DIFFRACTION MOLECULAR REPLACEMENT 1CTN 1.55 10 112857 112857 5640 99.8 0.188 0.188 0.187 0.18 0.215 RANDOM 24.2
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 25.2 p_staggered_tor 11.9 torsion_deg 11.9 p_planar_tor 6.5 p_scangle_it 2.27 p_mcangle_it 1.57 p_scbond_it 1.5 p_angle_deg 1.2 p_mcbond_it 1.09 p_multtor_nbd 0.241
RMS Deviations Key Refinement Restraint Deviation p_transverse_tor 25.2 p_staggered_tor 11.9 torsion_deg 11.9 p_planar_tor 6.5 p_scangle_it 2.27 p_mcangle_it 1.57 p_scbond_it 1.5 p_angle_deg 1.2 p_mcbond_it 1.09 p_multtor_nbd 0.241 contacts_van_der_waals_d 0.24 p_xyhbond_nbd 0.196 p_singtor_nbd 0.171 p_chiral_restr 0.093 p_planar_d 0.03 p_angle_d 0.023 p_bond_d 0.01 p_plane_restr 0.01 peptide_bond_planarity_d 0.01
Non-Hydrogen Atoms Used in Refinement Non-Hydrogen Atoms Number Protein Atoms 4220 Nucleic Acid Atoms Solvent Atoms 909 Heterogen Atoms
Software Software Software Name Purpose DENZO data reduction SCALEPACK data scaling AMoRE phasing REFMAC refinement