A basic function of Rosetta is calculating the energy or score of a biomolecule. Rosetta has a standard energy function for all-atom calculations as well as several scoring functions for low-resolution protein representations. See https://www.ncbi.nlm.nih.gov/pubmed/28430426 for a review on the all-atom score functions.
You can also tailor an energy function by including scoring terms of your choice with custom weights.
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