A method for the rapid preparation of a defined substrate to monitor R
Nase H activity has been developed. Using this substrate, we have inve
stigated the RNase H activities of the different forms of recombinant
HIV-1 and HIV-2 reverse transcriptase (RT) in detail. As we report her
e, RNase H activity is associated only with the dimeric forms (p51/p66
or p66/p66) of the enzymes