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Table 1 Comparative analysis of amino acid differences between subtype B and CRF12_BF-like variants. Positions are shown according to protein domains.

From: Viral replication is enhanced by an HIV-1 intersubtype recombination-derived Vpu protein

N-Terminal     Transmembrane α-Helix I
Positions 3 4 5     7 16 18 24 27 43 46 47    
Subtype B P - I     V I I S I I L I    
CRF12_BF-like S L V     L A L T L L I R    
α-Helix II             C-Terminal
Positions 58 60 61 62 63 65 66 67 68 69 70 73 74 75 77 78 81
Subtype B E E V S A V E M G V E H H A W D D
CRF12_BF-like D D A E E A A - L G G P L I G N I