>3G7A_1|Chain A|Envelope glycoprotein gp160|null SGIVQQQNNLLRAIEAQQHLLQLTVWGIKQLQARIL >3G7A_2|Chain B|Chimeric alpha+alpha/beta-peptide analogue of the HIV gp41 CHR domain|null TTWEAWDRAIAEYAXRIEXLIXAAQEQQEKNEXALXEL