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SOLUTION STRUCTURE AND BACKBONE DYNAMICS OF A CONCATEMER OF EGF-HOMOLOGY MODULES OF THE HUMAN LOW DENSITY LIPOPROTEIN RECEPTOR
NMR Experiment Experiment Type Sample Contents Solvent Ionic Strength pH Pressure Temperature (K) Spectrometer 1 HNHA 1.5mM EGF-A, 20mM CaCl2 95% H2O/5% D2O 0.060 5.5 ambient 310 2 2D NOESY 1mM 15N-EGF-AB, 20mM CaCl2 95% H2O/5% D2O 0.060 5.5 ambient 310 3 2D NOESY 1.5mM EGF-A, 20mM CaCl2 99% D2O 0.060 5.5 ambient 310 4 2D NOESY 1mM EGF-AB, 20mM CaCl2 95% H2O/5% D2O 0.060 5.5 ambient 283 5 DQF-COSY 1mM EGF-AB, 20mM CaCl2 95% H2O/5% D2O 0.060 5.5 ambient 283 6 3D_15N-separated_NOESY 1.5mM EGF-A, 20mM CaCl2 95% H2O/5% D2O 0.060 5.5 ambient 295
NMR Spectrometer Information Spectrometer Manufacturer Model Field Strength 1 Bruker DMX 750
NMR Refinement Method Details Software 1. Torsion angles dynamics 2. Restrained molecular dynamics with calcium 3. Energy minimisation The structures are based on: 874 NOE restraints, 64 phi dihedral angles, 14 chi1 dihedral angles, 14 hydrogen bonds, 9 calcium ion ligand restraints XwinNMR
NMR Ensemble Information Conformer Selection Criteria Energy minimised average structure from 30 selected structure with lowest energy Conformers Calculated Total Number 100 Conformers Submitted Total Number 1
Additional NMR Experimental Information Details 15N T1, T2, and NOE relaxations to obtain backbone dynamics information T1/T2 data were not used for structure refinement
Computation: NMR Software # Classification Version Software Name Author 1 collection XwinNMR 2.6 Bruker 2 processing Sparky 3.95 T. Goddard & D. G. Kneller 3 structure solution DYANA 1.5 P. Guntert 4 refinement X-PLOR 3.85 A. Brunger 5 data analysis MOLMOL 2.6 R. Koradi