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. 2012 Jan 26;7(1):e30292. doi: 10.1371/journal.pone.0030292

Figure 1. Amino acid alignment of V3 sequences.

Figure 1

Subtype B sequences were aligned with the consensus sequence. Amino acid positions appear at the top of each alignment, with dots indicating identities whereas dashes indicate deletions. # indicates the N-linked glycosylation site, * indicates the GPGR motif at the tip of the V3 loop, and ยง indicates positions 316 and 323 (HXB2 positions), which are associated with in vitro selection of maraviroc resistance (316T and 323 V substitutions are shaded) [29]. Inferred tropism is indicated to the right of each sequence (CXCR4-using strains are named X4 for the sake of simplicity).