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Pucker corrections for semiempirical methods

This repository contains tabulated corrections for DFTB/DFTB2 and AM1/d-PhoT taken from the paper by Huang et al, 2014

Original tables have been extracted from supporting tables S1 and S2 of that paper.

External potentials in a format that can be read by PLUMED are provided.

A sample input file for PLUMED is also provided.

Implementation have been made by Alejandro Gil-Ley, Vojtech Mlynsky, and Giovanni Bussi

USE AT YOUR OWN RISK!

How to

Usage:

> ./generate-grids.sh method sequence

Here methods is dftb3 or am1d, and sequence is space separated sequence.

Example:

> ./generate-grids.sh dftb3 C G U U C G G C > plumed.dat

This will generate a plumed.dat input file as well as 8 grid files containing the correcting potentials for the 8 nucleotides.

Warnings

  • Potential outside of the -pi/6,+pi/6 range for both Zx and Zy is set to an arbitrary value. Usually these variables should not reach the boundaries. In case they do it, one should set a wall to avoid it.
  • Atom selection uses PLUMED MOLINFO syntax. Please double check that atoms for puckering have been properly selected.

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Corrections for RNA pucker using DFTB

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