GoEN model

You can obtain the script for generating input files for the GROMACS software for proteins based on the GEN model here.

The relevant publication is:

A. B. Poma, M. S. Li, P. E. Theodorakis, “Generalization of the Elastic Network model for the study of large conformational changes in biomolecules”, Physical Chemistry Chemical Physics 20, 17020 (2018)