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E.COLI METHIONINE AMINOPEPTIDASE HIS79ALA MUTANT
Starting Model(s) Initial Refinement Model(s) Type Source Accession Code Details experimental model PDB 2MAT
Crystallization Crystalization Experiments ID Method pH Temperature Details 1 7 Crystals of the HIS79ALA mutant were obtained by mixing the apoenzyme
retaining the C-terminal HISs-tag (6.7 mg/ml, 20 mM DTT, 25 mM HEPES
pH 6.8, 25 mM K2SO4, 100 mM NaCl) with an equal volume of well solution
(22-27 % PEG 3400, 0.1 M HEPES pH 7.0, 200 mM NaCl). Diffraction quality
crystals were obtained after macroseeding into 20 uL hanging drops.
Crystal Properties Matthews coefficient Solvent content 2.38 47.9
Crystal Data Unit Cell Length ( Å ) Angle ( ˚ ) a = 38.648 α = 90 b = 68.298 β = 105.98 c = 55.449 γ = 90
Symmetry Space Group P 1 21 1
Diffraction Diffraction Experiment ID # Crystal ID Scattering Type Data Collection Temperature Detector Detector Type Details Collection Date Monochromator Protocol 1 1 x-ray 103 IMAGE PLATE RIGAKU RAXIS IV 1997-10-10 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 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 28.8 85.2 4.7 22.4 3 16062 16.2
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 2.07 70.8 21 4.4
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-Work (Depositor) R-Work (DCC) R-Free (Depositor) Mean Isotropic B X-RAY DIFFRACTION MOLECULAR REPLACEMENT 2MAT 2 28.8 16062 16062 100 0.184 0.1703
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 t_dihedral_angle_d 17.1 t_it 4.9 t_angle_deg 2.38 t_nbd 0.016 t_bond_d 0.012 t_gen_planes 0.012 t_trig_c_planes 0.008 t_incorr_chiral_ct t_pseud_angle
Non-Hydrogen Atoms Used in Refinement Non-Hydrogen Atoms Number Protein Atoms 2052 Nucleic Acid Atoms Solvent Atoms 155 Heterogen Atoms 1
Software Software Software Name Purpose AMoRE phasing TNT refinement DENZO data reduction SCALEPACK data scaling