| HIV-2 | An HIV species related to HIV-1 but carrying different antigenic components and with differing nucleic acid composition. It shares serologic reactivity and sequence homology with the simian lentivirus siv and infects only t4-lymphocytes expressing the CD4 phenotypic marker. (12 Dec 1998) |
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| HIV-2 protease | <enzyme> Processes hiv-1pr53(gag) and analogous junction peptides in vitro; less than 60% amino acid identity to hiv-1 protease Registry number: EC 3.4.23.- Synonym: hiv2 protease (26 Jun 1999) |
| HIV-2 reverse transcriptase | <enzyme> Responsible for synthesis of double-stranded DNA from the genomic RNA of the virus; has rnase h and DNA-dependent DNA polymerase activities; was indexed as reverse transcriptase (87-91) Registry number: EC 2.7.7.- (26 Jun 1999) |