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Alignments of amino acid sequences of the CA L4/5 region of HIV-2, SIVmac, and SIVsmm selected from the Los Alamos databases. Dots denote the amino acid identical to one of the GH123 CA and dashes denote lack of an amino acid residue that is present in GH123 and other viruses. Boxes show the site of SIVmac-specific amino acid residues. H2A, B, and U represent HIV-2 group A, B, and U, respectively. MAC represents SIVmac, and SMM denotes SIVsmm.
