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. 2020 Dec 10;10:21773. doi: 10.1038/s41598-020-78465-1

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© The Author(s) 2020

Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons licence, and indicate if changes were made. The images or other third party material in this article are included in the article's Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article's Creative Commons licence and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this licence, visit http://creativecommons.org/licenses/by/4.0/.

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The torsion angles of the 78th amino acid heptamer in a sequence that results in four protein structures (1a29, 1cfd, 1cll, and 2bcx). The blue points represent all possible torsion angles and the torsion angles corresponding to each of the four protein structures are indicated. The most-dense cluster and second most-dense cluster used for constructing the predicted structures are pointed out.