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X-ray crystal structure of a hyperactive, Ca2+-dependent, beta-helical antifreeze protein from an Antarctic bacterium
Crystallization Crystalization Experiments ID Method pH Temperature Details 1 VAPOR DIFFUSION, HANGING DROP 9.5 298 10% PEG 8000, 400 mM MgAcetate, pH 9.5, VAPOR DIFFUSION, HANGING DROP, temperature 298K
Crystal Properties Matthews coefficient Solvent content 2.51 51.02
Crystal Data Unit Cell Length ( Å ) Angle ( ˚ ) a = 57.5 α = 99.06 b = 70.78 β = 92.3 c = 84.25 γ = 97.47
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 270 mirrors 2009-06-12 M SINGLE WAVELENGTH
Radiation Source ID # Source Type Wavelength List Synchrotron Site Beamline 1 SYNCHROTRON NSLS BEAMLINE X6A 1.6 NSLS X6A
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 1.7 34.6 94.9 0.088 142852 135568
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 1.7 1.79 89.4 0.461 2.7 3.9 18711
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 (Observed) R-Work (Depositor) R-Free (Depositor) R-Free (DCC) R-Free Selection Details Mean Isotropic B X-RAY DIFFRACTION MOLECULAR REPLACEMENT THROUGHOUT 1.7 34.6 142852 128766 6803 94.9 0.16547 0.16363 0.20022 0.2137 RANDOM 9.459
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] -0.17 0.22 -0.03 -0.84 -0.04
RMS Deviations Key Refinement Restraint Deviation r_dihedral_angle_2_deg 42.219 r_dihedral_angle_4_deg 17.905 r_dihedral_angle_3_deg 12.45 r_dihedral_angle_1_deg 6.592 r_scangle_it 4.926 r_scbond_it 3.232 r_angle_refined_deg 1.933 r_mcangle_it 1.852 r_mcbond_it 1.2 r_chiral_restr 0.177
RMS Deviations Key Refinement Restraint Deviation r_dihedral_angle_2_deg 42.219 r_dihedral_angle_4_deg 17.905 r_dihedral_angle_3_deg 12.45 r_dihedral_angle_1_deg 6.592 r_scangle_it 4.926 r_scbond_it 3.232 r_angle_refined_deg 1.933 r_mcangle_it 1.852 r_mcbond_it 1.2 r_chiral_restr 0.177 r_bond_refined_d 0.025 r_gen_planes_refined 0.011
Non-Hydrogen Atoms Used in Refinement Non-Hydrogen Atoms Number Protein Atoms 8879 Nucleic Acid Atoms Solvent Atoms 1133 Heterogen Atoms 64
Software Software Software Name Purpose HKL-2000 data collection SHELXS phasing REFMAC refinement HKL-2000 data reduction SCALA data scaling