Vibrational analysis of peptides, polypeptides, and proteins. XVII. Normal modes of crystalline Pro-Leu-Gly-NH2, a type II beta-turn

Int J Pept Protein Res. 1984 Jan;23(1):1-24.

Abstract

A normal mode calculation has been done for Pro-Leu-Gly-NH2 in its crystalline type II beta-turn structure, and assignments have been made to infrared and Raman bands of this molecule and its N-deuterated derivative. Observed and calculated frequencies below 1700 cm-1 agree to within about 6 cm-1. This analysis provides a sound basis for studying the conformation dependence of the vibrational spectrum.

Publication types

  • Research Support, Non-U.S. Gov't
  • Research Support, U.S. Gov't, Non-P.H.S.

MeSH terms

  • MSH Release-Inhibiting Hormone*
  • Models, Molecular
  • Peptides*
  • Protein Conformation
  • Proteins*
  • Spectrophotometry, Infrared
  • Spectrum Analysis, Raman
  • Vibration

Substances

  • Peptides
  • Proteins
  • MSH Release-Inhibiting Hormone