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Recognition of specific peptide sequences by signalling protein from sheep mammary gland (SPS-40): Crystal structure of the complex of SPS-40 with a peptide Trp-Pro-Trp at 2.9A resolution
Starting Model(s) Initial Refinement Model(s) Type Source Accession Code Details experimental model PDB 1R2V PDB ENTRY 1r2v
Crystallization Crystalization Experiments ID Method pH Temperature Details 1 VAPOR DIFFUSION, HANGING DROP 7.8 298 25mM tris-HCl, 11% ethanol, pH 7.8, VAPOR DIFFUSION, HANGING DROP, temperature 298.0K
Crystal Properties Matthews coefficient Solvent content 2.8 56
Crystal Data Unit Cell Length ( Å ) Angle ( ˚ ) a = 62.64 α = 90 b = 66.45 β = 90 c = 107.44 γ = 90
Symmetry Space Group P 21 21 21
Diffraction Diffraction Experiment ID # Crystal ID Scattering Type Data Collection Temperature Detector Detector Type Details Collection Date Monochromator Protocol 1 1 x-ray 298 IMAGE PLATE MARRESEARCH MIRROR 2004-11-14 M SINGLE WAVELENGTH
Radiation Source ID # Source Type Wavelength List Synchrotron Site Beamline 1 ROTATING ANODE RIGAKU RU300 1.5418
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 2.9 56 96.3 0.19 6.4 10552 9982 35
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) 1 2.9 3 95 0.66 2.9
Refinement Statistics Diffraction ID Structure Solution Method Cross Validation method Starting model 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-Free (Depositor) R-Free Selection Details Mean Isotropic B X-RAY DIFFRACTION MOLECULAR REPLACEMENT THROUGHOUT PDB ENTRY 1r2v 2.9 56 9982 9756 226 95 0.209 0.208 0.207 0.235 RANDOM 20
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] 7.8 -2.66 -5.22
RMS Deviations Key Refinement Restraint Deviation r_dihedral_angle_1_deg 25.8 r_angle_refined_deg 2.1 r_dihedral_angle_2_deg 1.28 r_bond_refined_d 0.013
Non-Hydrogen Atoms Used in Refinement Non-Hydrogen Atoms Number Protein Atoms 2905 Nucleic Acid Atoms Solvent Atoms 73 Heterogen Atoms 30
Software Software Software Name Purpose HKL-2000 data collection SCALEPACK data scaling AMoRE phasing CNS refinement HKL-2000 data reduction