Figure 5From: Extensive purifying selection acting on synonymous sites in HIV-1 Group M sequencesSequence motifs for the highly conserved regions with known function. The fourteen regions with known specific functions found to be under strong purifying selection in HIV-1 genes. The range of coordinates on the HIV-1 genome for each motif is given in column 2. Numbers above each logo represent the degeneracy at each nucleotide site.Back to article page