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THE STRUCTURE OF THE NITRATE/NITRITE RESPONSE REGULATOR PROTEIN NARL IN THE MONOCLINIC C2 CRYSTAL FORM
Starting Model(s) Initial Refinement Model(s) Type Source Accession Code Details experimental model PDB 1RNL PDB ENTRY 1RNL
Crystallization Crystalization Experiments ID Method pH Temperature Details 1 VAPOR DIFFUSION, SITTING DROP 7.6 277 THE PROTEIN SOLUTION CONTAINING 23.3 MG/ML OF PURIFIED NARL, 20 MM TRIS.HCL (PH=7.6), 0.5 MM MGCL2, AND 10% GLYCEROL WAS MIXED WITH AN EQUAL VOLUME OF THE RESERVOIR SOLUTION CONTAINING 0.1 M TRIS.HCL (PH=8.5), 0.2 M SODIUM ACETATE, AND 30% POLYETHYLENE GLYCOL (PEG) 4000. SITTING DROPS CONTAINING 20 ML OF MIXTURE WERE EQUILIBRATED BY VAPOR DIFFUSION AT 4 DEGREES AGAINST 20 ML OF THE RESERVOIR SOLUTION. CRYSTALS BEGAN TO APPEAR AS CLUSTERS OF PLATES AFTER 11-15 DAYS., vapor diffusion - sitting drop, temperature 277K
Crystal Properties Matthews coefficient Solvent content 2.49 51.03
Crystal Data Unit Cell Length ( Å ) Angle ( ˚ ) a = 156.306 α = 90 b = 38.527 β = 131.91 c = 106.892 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 93 IMAGE PLATE RIGAKU 1995-07-27 M
Radiation Source ID # Source Type Wavelength List Synchrotron Site Beamline 1 ROTATING ANODE RIGAKU
Data Collection Overall ID # Resolution (High) Resolution (Low) Percent Possible (Observed) R Merge I (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 2.2 65 99.87 0.078 0.078 9.8 5.4 22871 20
Highest Resolution Shell ID # Resolution (High) Resolution (Low) Percent Possible (All) Percent Possible (Observed) Mean I Over Sigma (Observed) Redundancy Number Unique Reflections (All) 2.2 2.44 99.3
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 Selection Details Mean Isotropic B X-RAY DIFFRACTION MOLECULAR REPLACEMENT THROUGHOUT PDB ENTRY 1RNL 2.2 8 22321 99 0.211 0.211 0.2021 0.267 RANDOM 20
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 x_angle_deg 1.36 x_bond_d 0.009 x_bond_d_na x_bond_d_prot x_angle_d x_angle_d_na x_angle_d_prot x_angle_deg_na x_angle_deg_prot x_dihedral_angle_d
RMS Deviations Key Refinement Restraint Deviation x_angle_deg 1.36 x_bond_d 0.009 x_bond_d_na x_bond_d_prot x_angle_d x_angle_d_na x_angle_d_prot x_angle_deg_na x_angle_deg_prot x_dihedral_angle_d x_dihedral_angle_d_na x_dihedral_angle_d_prot x_improper_angle_d x_improper_angle_d_na x_improper_angle_d_prot x_mcbond_it x_mcangle_it x_scbond_it x_scangle_it
Non-Hydrogen Atoms Used in Refinement Non-Hydrogen Atoms Number Protein Atoms 3174 Nucleic Acid Atoms Solvent Atoms 361 Heterogen Atoms
Software Software Software Name Purpose X-PLOR model building X-PLOR refinement DENZO data reduction SCALEPACK data scaling X-PLOR phasing