Before revision:  We obtain parameters of the sugar CG DNA model from the all-atom AMBER model. The suggested model allows adequate simulation of the transitions between A- and B-DNA forms, as well as of large deformations of long DNA molecules , for example, in binding with proteins . Small modifications of the model can provide the possibility of introducing sequence dependence, as well as of modeling base pairs openings .
After revision:  We obtain parameters of the sugar CG DNA model from the all atom AMBER force field. The model can be used to study large local deformations of long DNA molecules , for example, in binding with proteins . Small modifications of the model can provide the possibility of introducing sequence dependence, as well as of modeling base pairs openings .