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NMR structure of the all-trans retinal in dark-adapted Bacteriorhodopsin
NMR Experiment Experiment Type Sample Contents Solvent Ionic Strength pH Pressure Temperature (K) Spectrometer 1 2D NOESY residue specifically labeled purple membrane (12-20 mg Bacteriorhodopsin) suspended in 1% deuterated dodecal maltoside, 10 mM potassium phosphate buffer in D2O D2O 1 6.5 1 atm 308 2 2D NOESY residue specifically labeled purple membrane (12-20 mg Bacteriorhodopsin) suspended in 1% deuterated dodecal maltoside, 10 mM potassium phosphate buffer in D2O D2O 1 6.5 1 atm 313 3 2D NOESY residue specifically labeled purple membrane (12-20 mg Bacteriorhodopsin) suspended in 1% deuterated dodecal maltoside, 10 mM potassium phosphate buffer in D2O D2O 1 6.5 1 atm 318
NMR Spectrometer Information Spectrometer Manufacturer Model Field Strength 1 Bruker DMX 800 2 Bruker DRX 750
NMR Refinement Method Details Software simulated annealing NMR structures of the active center in dark-adapted bacteriorhodopsin were calculated using PDB entry 1BRR, as a template, and 32 NOE restraints. XwinNMR
NMR Ensemble Information Conformer Selection Criteria rms distance between observed and calculated chemical shifts Conformers Calculated Total Number 100 Conformers Submitted Total Number 12 Representative Model 1 (lowest energy)
Computation: NMR Software # Classification Version Software Name Author 1 processing XwinNMR 2.6 Bruker, A.G. 2 structure solution Amber 4.1 Kollman, P. 3 refinement Amber 4.1 Kollman, P.