Simple solvation potential for coarse-grained models of proteins
A. Bhattacharyay, A. Trovato, F. Seno
Abstract
We formulate a simple solvation potential based on a coarsed-grain representation of amino acids with two spheres modeling the Cα atom and an effective side-chain centroid. The potential relies on a new method for estimating the buried area of residues, based on counting the effective number of burying neighbours in a suitable way. This latter quantity shows a good correlation with the buried area of residues computed from all atom crystallographic structures. We check the discriminatory power of the solvation potential alone to identify the native fold of a protein from a set of decoys and show the potential to be considerably selective.
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