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. 2014 Nov 25;11:99. doi: 10.1186/s12977-014-0099-3

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© Santos-Costa et al.; licensee BioMed Central Ltd. 2014

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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Location of amino acids residues involved in coreceptor usage. Schematic representation of the envelope SU glycoprotein of HIV-2_MJC97 putative secondary structure spanning from C1 to V3 regions. The amino acid sequence of HIV-2_MJC97 (MJC97wt; R8) are represented in black; the mutated amino acids present in MJC97mt7 (R5X4; panel A) and MJC97mt7′ (R5; panel B) are represented in red. Amino acids are denoted by single-letter code. The underlined amino acids represent potential glycosylation sites linked to asparagine (N) as defined using the LANL N-glycosite program (http://www.hiv.lanl.gov/content/sequence/GLYCOSITE/glycosite.html). Amino acids residues were numbered according to HIV-2_MJC97 sequence (GenBank accession number: EU021092). This schematic representation was based on previous data regarding epitope and cysteine loops mapping [58,59].