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Amino acid sequence alignment of CD4-dependent and CD4i envelope clones from the CSF of ET94 (A), GC98 (B), and FI08 (C). The full-length gp120 of the CD4-dependent clone 2 and the CD4i clone 20 of ET94, as well as the V1-to-V5 gp120 of CD4-dependent clones 4 and 6 and CD4i clones 20 and 7 from GC98 and FI08, respectively, are shown. The dashes indicate amino acid identity, and changes altering potential sites of N-linked glycosylation are boxed.
