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. 2015 Apr 19;16:123. doi: 10.1186/s12859-015-0554-8

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© Limongelli et al.; licensee BioMed Central. 2015

This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly credited. The Creative Commons Public Domain Dedication waiver (http://creativecommons.org/publicdomain/zero/1.0/) applies to the data made available in this article, unless otherwise stated.

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Amphiphilic PseAAC representation. This is a diagram shows how the correlation factors H^k, based on amino acid hydrophobicity (k = 1) and hydrophilicity (k = 2), vary in each tier by coupling residues at different distances.