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Conversion of known secondary structure (A) into one of four possible identities: phosphate, ribose, nucleobase, hydrogen bond (B). Three-dimensional assignment in the coarse-grain modeling program TOPRNA: gold, phosphate; yellow, ribose; green, nucleobase; white, hydrogen bond (C). Reprinted (adapted or reprinted in part) with permission from ref 141. Copyright 2014 Oxford University Press.
