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The structure of tryptophan 7-halogenase (PrnA) suggests a mechanism for regioselective chlorination
Crystallization Crystalization Experiments ID Method pH Temperature Details 1 VAPOR DIFFUSION, SITTING DROP 6.5 293 8% PEG20000, 0.1M Mes pH 6.5, 20mM tryptophan, VAPOR DIFFUSION, SITTING DROP, temperature 293 K
Crystal Properties Matthews coefficient Solvent content 2.6 52.4
Crystal Data Unit Cell Length ( Å ) Angle ( ˚ ) a = 67.63 α = 90 b = 67.63 β = 90 c = 276.027 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 100 CCD ADSC QUANTUM 4 2003-11-19 M MAD 2 1 3 1
Radiation Source ID # Source Type Wavelength List Synchrotron Site Beamline 1 SYNCHROTRON ESRF BEAMLINE ID14-1 0.934, 0.9796, 0.9798, 0.9252 ESRF ID14-1
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 1.8 54.66 93 0.071 0.071 6.4 9.1 57128 57013 2.11 2.3 25.52
Highest Resolution Shell ID # Resolution (High) Resolution (Low) Percent Possible (All) Percent Possible (Observed) R Merge I (Observed) R-Sym I (Observed) Mean I Over Sigma (Observed) Redundancy Number Unique Reflections (All) 1.8 1.9 93 68.8 0.337 0.337 2.3 5.2 5997
Refinement Statistics Diffraction ID Structure Solution Method Cross Validation method 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 (DCC) R-Free Selection Details Mean Isotropic B X-RAY DIFFRACTION MAD THROUGHOUT 1.8 54.66 57013 56573 2857 93.12 0.169 0.167 0.168 0.2232 0.202 0.2442 RANDOM 29.429
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] 0.24 0.24 -0.49
RMS Deviations Key Refinement Restraint Deviation r_dihedral_angle_2_deg 31.683 r_dihedral_angle_4_deg 20.862 r_dihedral_angle_3_deg 13.857 r_sphericity_free 6.435 r_dihedral_angle_1_deg 6.099 r_scangle_it 3.371 r_sphericity_bonded 2.48 r_scbond_it 2.287 r_mcangle_it 1.67 r_rigid_bond_restr 1.512
RMS Deviations Key Refinement Restraint Deviation r_dihedral_angle_2_deg 31.683 r_dihedral_angle_4_deg 20.862 r_dihedral_angle_3_deg 13.857 r_sphericity_free 6.435 r_dihedral_angle_1_deg 6.099 r_scangle_it 3.371 r_sphericity_bonded 2.48 r_scbond_it 2.287 r_mcangle_it 1.67 r_rigid_bond_restr 1.512 r_angle_refined_deg 1.478 r_mcbond_it 1.099 r_nbtor_refined 0.317 r_symmetry_vdw_refined 0.247 r_nbd_refined 0.21 r_xyhbond_nbd_refined 0.158 r_symmetry_hbond_refined 0.128 r_chiral_restr 0.102 r_bond_refined_d 0.013 r_gen_planes_refined 0.007
Non-Hydrogen Atoms Used in Refinement Non-Hydrogen Atoms Number Protein Atoms 4162 Nucleic Acid Atoms Solvent Atoms 393 Heterogen Atoms 69
Software Software Software Name Purpose SCALA data scaling SOLVE phasing RESOLVE phasing REFMAC refinement PDB_EXTRACT data extraction MOSFLM data reduction CCP4 data scaling