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. 2019 Dec 16;16:38. doi: 10.1186/s12977-019-0500-3

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© The Author(s) 2019

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. 2 — Delta retroviruses have a higher a CG content. a ρ statistic of each dinucleotide within the human genome, shown independently for some chromosomes. b The same analysis is shown for HIV-1, HIV-2 (lentiviruses), HTLV-1, HTLV-2 (delta retroviruses), JEV, and Ebola (previously reported to be ZAP targets). c CG dinucleotide content is shown for several retroviruses grouped by families. d ρ statistic of each dinucleotide within retroviruses and viruses reported to be ZAP targets. Proportion of CG-dinucleotides in a 200-nucleotide window in viral (HIV-1: e, HTLV-1: f) and a random sequence. Below each graph, individual proviral sequences are shown, wherein black lines represent a CG di-nucleotide