The structure of crystalline and membrane-bound gramicidin A by vibrational analysis

  • Naik V
  • Krimm S
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Abstract

The results of normal mode calculations on the β4.4, β6.3, {double arrow, left up, right down}β5.6, and {double arrow, left up, right down}β7.2structures of gramicidin A are compared with infrared and Raman spectra of crystalline native, crystalline Cs+-bound, and vesicle-bound gramicidin A. The observed frequencies and frequency splittings are in good agreement with an assignment of {double arrow, left up, right down}β5.6, {double arrow, left up, right down}β7.2, and β6.3structures, respectively, to the gramicidin A molecules in the above three systems. © 1984.

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