Quantum mechanical/molecular mechanical/continuum style solvation model: Second order Møller-Plesset perturbation theory

Nandun M. Thellamurege, Dejun Si, Fengchao Cui, Hui Li

Research output: Contribution to journalArticle

2 Citations (Scopus)

Abstract

A combined quantum mechanical/molecular mechanical/continuum (QM/MM/C) style second order Møller-Plesset perturbation theory (MP2) method that incorporates induced dipole polarizable force field and induced surface charge continuum solvation model is established. The Z-vector method is modified to include induced dipoles and induced surface charges to determine the MP2 response density matrix, which can be used to evaluate MP2 properties. In particular, analytic nuclear gradient is derived and implemented for this method. Using the Assisted Model Building with Energy Refinement induced dipole polarizable protein force field, the QM/MM/C style MP2 method is used to study the hydrogen bonding distances and strengths of the photoactive yellow protein chromopore in the wild type and the Glu46Gln mutant.

Original languageEnglish (US)
Article number174115
JournalJournal of Chemical Physics
Volume140
Issue number17
DOIs
StatePublished - May 7 2014

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Solvation
Surface charge
solvation
perturbation theory
dipoles
continuums
field theory (physics)
proteins
Hydrogen bonds
Proteins
gradients
hydrogen
energy

ASJC Scopus subject areas

  • Physics and Astronomy(all)
  • Physical and Theoretical Chemistry

Cite this

Quantum mechanical/molecular mechanical/continuum style solvation model : Second order Møller-Plesset perturbation theory. / Thellamurege, Nandun M.; Si, Dejun; Cui, Fengchao; Li, Hui.

In: Journal of Chemical Physics, Vol. 140, No. 17, 174115, 07.05.2014.

Research output: Contribution to journalArticle

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