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A triple mutant in the omega-loop of TEM-1 beta-lactamase changes the substrate profile via a large conformational change and an altered general base for catalysis
Starting Model(s) Initial Refinement Model(s) Type Source Accession Code Details experimental model PDB 1BTL PDB ENTRY 1BTL
Crystallization Crystalization Experiments ID Method pH Temperature Details 1 VAPOR DIFFUSION, HANGING DROP 6.5 298 0.1M HEPES pH6.5, 30% W/V PEG 6,000, VAPOR DIFFUSION, HANGING DROP, temperature 298K
Crystal Properties Matthews coefficient Solvent content 2.09 41.03
Crystal Data Unit Cell Length ( Å ) Angle ( ˚ ) a = 60.32 α = 90.06 b = 83.3 β = 89.97 c = 95.92 γ = 90.02
Diffraction Diffraction Experiment ID # Crystal ID Scattering Type Data Collection Temperature Detector Detector Type Details Collection Date Monochromator Protocol 1 1 x-ray 200 CCD ADSC QUANTUM 315r 2013-12-20 M SINGLE WAVELENGTH
Radiation Source ID # Source Type Wavelength List Synchrotron Site Beamline 1 SYNCHROTRON ALS BEAMLINE 5.0.1 0.997 ALS 5.0.1
Data Collection Overall ID # Resolution (High) Resolution (Low) Percent Possible (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 2.315 62.89 75 21570 21750 2 2
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 2.315 2.4 99.3 0.481 3.1
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 (DCC) R-Free Selection Details Mean Isotropic B X-RAY DIFFRACTION MOLECULAR REPLACEMENT THROUGHOUT PDB ENTRY 1BTL 2.315 62.89 76898 4081 99.63 0.23667 0.23501 0.2488 0.26795 0.2748 RANDOM 21.496
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] 0.06 0.01 -0.64 -0.28 -0.17 0.22
RMS Deviations Key Refinement Restraint Deviation r_dihedral_angle_2_deg 35.024 r_dihedral_angle_3_deg 16.308 r_dihedral_angle_4_deg 16.083 r_dihedral_angle_1_deg 6.133 r_long_range_B_refined 5.447 r_long_range_B_other 5.31 r_scangle_other 2.678 r_mcangle_it 2.555 r_mcangle_other 2.554 r_scbond_it 1.62
RMS Deviations Key Refinement Restraint Deviation r_dihedral_angle_2_deg 35.024 r_dihedral_angle_3_deg 16.308 r_dihedral_angle_4_deg 16.083 r_dihedral_angle_1_deg 6.133 r_long_range_B_refined 5.447 r_long_range_B_other 5.31 r_scangle_other 2.678 r_mcangle_it 2.555 r_mcangle_other 2.554 r_scbond_it 1.62 r_scbond_other 1.619 r_mcbond_it 1.582 r_mcbond_other 1.582 r_angle_refined_deg 1.519 r_angle_other_deg 1.19 r_chiral_restr 0.083 r_bond_refined_d 0.012 r_gen_planes_refined 0.01 r_bond_other_d 0.008 r_gen_planes_other 0.008 r_nbd_refined r_nbd_other r_nbtor_refined r_nbtor_other r_xyhbond_nbd_refined r_xyhbond_nbd_other r_metal_ion_refined r_metal_ion_other r_symmetry_vdw_refined r_symmetry_vdw_other r_symmetry_hbond_refined r_symmetry_hbond_other r_symmetry_metal_ion_refined r_symmetry_metal_ion_other r_scangle_it r_rigid_bond_restr r_sphericity_free r_sphericity_bonded
Non-Hydrogen Atoms Used in Refinement Non-Hydrogen Atoms Number Protein Atoms 15679 Nucleic Acid Atoms Solvent Atoms 817 Heterogen Atoms 40
Software Software Software Name Purpose HKL-2000 data collection MOLREP phasing REFMAC refinement MOSFLM data reduction SCALA data scaling