>gi|3916279|gb|AF089154.1| HIV-1 isolate S4V2-4 from USA envelope glycoprotein (env) gene, partial cds GAGGTAGTAATTAGATCTGAAAATTTCACGAACAATGCTAAAATTATAATAGTACAGCTGAATGAATCTG TAGAAATTAATTGTACAAGACCCGACAACAATACAGTAAGAAAGATACCTATAGGACCAGGGAGAGCATT TTATACAACAGGCAGAATAGGAGATATAAGGCAAGCACATTGTAACATTAGTAGAACAAAATGGAATAAC ACTTTAAAACTGATAGTTAACAAATTAAGAGAACAATTTGGGAATAAAACAATAATCTTTAATCAATCCT CA