Conformations at local energy minimums for gramicidin S: optical calculations.
Energy minimization techniques applied to an arbitrary peptide primary sequence result in a still large number of hypothetical structures of similar energy. Optical activity calculations can, in principle, be used to screen the low-energy conformations. Those conformations which yield a spectrum different from the observed spectrum by a factor greater than the current reliability of the calculation can be excluded. The method is applied to gramicidin S.
D004735:Energy Transfer; D008956:Models, Chemical; D055095:Optics and Photonics; D010455:Peptides; D014449:Tyrothricin
D010455:Peptides; D014449:Tyrothricin