%0 Journal Article
%T Towards Symmetry-Based Explanation of (Approximate) Shapes of Alpha-Helices and Beta-Sheets (and Beta-Barrels) in Protein Structure
%A Jaime Nava
%A Vladik Kreinovich
%J Symmetry
%D 2012
%I MDPI AG
%R 10.3390/sym4010015
%X Protein structure is invariably connected to protein function. There are two important secondary structure elements: alpha-helices and beta-sheets (which sometimes come in a shape of beta-barrels). The actual shapes of these structures can be complicated, but in the first approximation, they are usually approximated by, correspondingly, cylindrical spirals and planes (and cylinders, for beta-barrels). In this paper, following the ideas pioneered by a renowned mathematician M. Gromov, we use natural symmetries to show that, under reasonable assumptions, these geometric shapes are indeed the best approximating families for secondary structures.
%K symmetries
%K secondary protein structures
%K alpha-helices
%K beta-sheets
%K beta-barrels
%U http://www.mdpi.com/2073-8994/4/1/15