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Structure of Zeta-Zeta Transmembrane Dimer
NMR Experiment Experiment Type Sample Contents Solvent Ionic Strength pH Pressure Temperature (K) Spectrometer 1 gradient-enhanced HNCA 0.5-1.0 mM disulfide crosslinked zeta-zeta dimer U-15N,U-13C,85%-2H. Sodium dodecyl sulfate (40 mM) and dodecyl phosphocholine (200 mM), 95% H2O, 5% D2O. 95% H2O/5% D2O 20 mM sodium phosphate buffer 7.0 ambient 303 2 3D_15N-separated_NOESY 0.5-1.0 mM disulfide crosslinked zeta-zeta dimer U-15N,U-13C. Sodium dodecyl sulfate (40 mM) and dodecyl phosphocholine (200 mM), 95% H2O, 5% D2O. 95% H2O/5% D2O 20 mM sodium phosphate buffer 7.0 ambient 303 3 3D_15N-separated_NOESY 0.5-1.0 mM disulfide crosslinked zeta-zeta dimer U-15N,U-13C. Sodium dodecyl sulfate (40 mM) and dodecyl phosphocholine (200 mM), 95% H2O, 5% D2O. 95% H2O/5% D2O 20 mM sodium phosphate buffer 7.0 ambient 303 4 3D_13C-separated_NOESY 0.5-1.0 mM disulfide crosslinked zeta-zeta dimer U-15N,U-13C. Sodium dodecyl sulfate (40 mM) and dodecyl phosphocholine (200 mM), 95% H2O, 5% D2O. 95% H2O/5% D2O 20 mM sodium phosphate buffer 7.0 ambient 303 5 3D_15N-separated_NOESY 0.5-1.0 mM disulfide crosslinked zeta-zeta dimer, mixed-label. One monomer: U-15N,U-2H. Other monomer: natural abundance isotopes. Sodium dodecyl sulfate (40 mM) and dodecyl phosphocholine (200 mM), 95% H2O, 5% D2O. 95% H2O/5% D2O 20 mM sodium phosphate buffer 7.0 ambient 303 6 standard HSQC and trosy-HSQC for D(NH) couplings; 2D (CA)CONH quantitative JCH experiment for D(CaHa) couplings 0.5-1.0 mM disulfide crosslinked zeta-zeta dimer U-15N,U-13C. Sodium dodecyl sulfate (40 mM) and dodecyl phosphocholine (200 mM), 95% H2O, 5% D2O. 5% polyacrylamide gel. 95% H2O/5% D2O 20 mM sodium phosphate buffer 7.0 ambient 303
NMR Spectrometer Information Spectrometer Manufacturer Model Field Strength 1 Bruker AVANCE 500 2 Bruker AVANCE 600
NMR Refinement Method Details Software simulated annealing 426 intramolecular NOE restraints, 46 intermolecular NOE restraints, 42 dihedral angle restraints, 70 residual dipolar coupling restraints. NMRPipe
NMR Ensemble Information Conformer Selection Criteria structures with the lowest energy Conformers Calculated Total Number 30 Conformers Submitted Total Number 15 Representative Model 1 (closest to the average)
Computation: NMR Software # Classification Version Software Name Author 1 processing NMRPipe 1.0 Frank Delaglio 2 data analysis CARA 1.5 Rochus Keller 3 refinement XPLOR-NIH 2.11 Charles Schwieters