Sunday, July 5, 2015

Equilibrium Transitions between side chain conformations in leucine and isoleucine

Equilibrium Transitions between side chain conformations in leucine and isoleucine
Caballero et al. 2015 - Proteins: Structure, function, bioinformatics

  • Difficult to understand the probabilities of amino acids to adopt specific side chain conformations
  • Used Langevin Dynamics simulations of Isoleucine and Leucine dipeptide mimetics to determine the relative populations of side chain dihedral angles
  • Determined relative populations of X1, X2 as a function of dihedral angles phi/psi
  • Proposes a mechanism for conversion between different conformations: some conversions more frequent than others
  • Used single steric models to investigate

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