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. 2016 Feb 16;13:28. doi: 10.1186/s12985-016-0486-6

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© Pacheco-Martínez et al. 2016

Open AccessThis article is distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. 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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Fig. 1 — Entropy at each amino acid position (S _k) of HIV-1 gp41 calculated from the whole set of sequences. Residue numbers correspond to positions in gp160 HXB2 strain. Residues statistically related to virus phenotype (Tables 2 and 3) are indicated with position number. FP, fusion peptide; HR1, heptad repeat region 1; HR2, heptad repeat region 2; MPER, membrane proximal external region; MSD, membrane spanning domain; MSD2, membrane spanning domain 2; MSD3, membrane spanning domain 3; ME, minor ectodomain; LLP-1, lentiviral lytic peptide 1; LLP-2, lentiviral lytic peptide 2; LLP-3, lentiviral lytic peptide 3