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. 1997 Aug 5;94(16):8640–8645. doi: 10.1073/pnas.94.16.8640

Figure 1.

Figure 1

Envelope glycoproteins derived from the env genes of HIV-1 and MuLV. Plasmid pEnv encodes the wild-type envelope glycoproteins of HIV-1 consisting of a total of 856 amino acids (strain BH10; ref. 22). The membrane spanning region (M) is located between amino acids 681 and 705 (23). Plasmid pTr712 encodes a truncated variant of the TM protein due to the insertion of a stop codon at amino acid position 712 by site-directed mutagenesis. The coding region of the MuLV-derived envelope proteins is shown for comparison.