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. 2012 Feb 7;5:3. doi: 10.1186/2046-1682-5-3

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Copyright ©2012 de Victoria et al; licensee BioMed Central Ltd.

This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/2.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

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Sequence clustering analysis of the HIV-1 subtypes, from the 2009 consensus sequences, based on sequence similarity. The horizontal axis of the dendrogram represents sequence similarity distance. Global prevalence, coreceptor selectivity and geographic distribution of each subtype are indicated in the figure. N/A denotes that information was not available. The green box highlights sequences that belong to Subtype D, while the orange box highlights the two crystal structural templates (from 2QAD and 2B4C), which belong to subtype B. The * refers to the global prevalence of Subtype B which includes the two crystal structure templates.