The smallest set of one or more successive configurational base units that generates the whole chain through helical symmetry.
Source: Purple Book, 1st ed., p. 79 [Terms] [Book]
Citation: 'helix residue' in IUPAC Compendium of Chemical Terminology, 3rd ed. International Union of Pure and Applied Chemistry; 2006. Online version 3.0.1, 2019. https://doi.org/10.1351/goldbook.H02770 RISBibTexEndNote