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The x-ray crystal structure of the first RNA recognition motif (RRM1) of the AU-rich element (ARE) binding protein HuR at 2.0 angstrom resolution
Starting Model(s) Initial Refinement Model(s) Type Source Accession Code Details experimental model PDB 1FXL PDB entry 1FXL
Crystallization Crystalization Experiments ID Method pH Temperature Details 1 VAPOR DIFFUSION, HANGING DROP 5.6 293 0.2 M Di-ammonium citrate, 20% w/v PEG 3350, 5% Glycerol, pH 5.6, VAPOR DIFFUSION, HANGING DROP, temperature 293K
Crystal Properties Matthews coefficient Solvent content 3.22 61.75
Crystal Data Unit Cell Length ( Å ) Angle ( ˚ ) a = 74.804 α = 90 b = 74.804 β = 90 c = 147.361 γ = 120
Symmetry Space Group P 31 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 100 CCD MARMOSAIC 225 mm CCD 2006-06-22 M SINGLE WAVELENGTH
Radiation Source ID # Source Type Wavelength List Synchrotron Site Beamline 1 SYNCHROTRON SLS BEAMLINE X10SA 1.00778 SLS X10SA
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 2 30 99.3 0.096 7.9 3 32767 -3 33.895
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) 2 2.08 99.5 0.484 3.2 3 3709
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-Free (Depositor) R-Free (DCC) R-Free Selection Details Mean Isotropic B X-RAY DIFFRACTION MOLECULAR REPLACEMENT THROUGHOUT PDB entry 1FXL 2 29.76 32762 1639 99.3 0.199 0.197 0.232 0.2369 RANDOM 32.295
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] 0.01 0.01 0.01 -0.02
RMS Deviations Key Refinement Restraint Deviation r_dihedral_angle_2_deg 36.591 r_dihedral_angle_4_deg 15.798 r_dihedral_angle_3_deg 14.225 r_dihedral_angle_1_deg 5.276 r_scangle_it 4.815 r_scbond_it 2.769 r_mcangle_it 1.818 r_angle_refined_deg 1.361 r_mcbond_it 0.942 r_chiral_restr 0.095
RMS Deviations Key Refinement Restraint Deviation r_dihedral_angle_2_deg 36.591 r_dihedral_angle_4_deg 15.798 r_dihedral_angle_3_deg 14.225 r_dihedral_angle_1_deg 5.276 r_scangle_it 4.815 r_scbond_it 2.769 r_mcangle_it 1.818 r_angle_refined_deg 1.361 r_mcbond_it 0.942 r_chiral_restr 0.095 r_bond_refined_d 0.013 r_gen_planes_refined 0.005
Non-Hydrogen Atoms Used in Refinement Non-Hydrogen Atoms Number Protein Atoms 2504 Nucleic Acid Atoms Solvent Atoms 197 Heterogen Atoms
Software Software Software Name Purpose XSCALE data scaling PHASER phasing REFMAC refinement PDB_EXTRACT data extraction HKL-2000 data collection