Review Question - QID 213881

A scientist is studying a protein present in human immunodeficiency virus in order to better understand how the virus functions. She finds that inhibiting the activity of this enzyme interrupts the viral life cycle and temporarily prevents further production of the virus. Specifically, she adds an inhibitor to the enzyme to a culture of infected cells and then introduces another group of uninfected cells to the culture. A western blot shows that HIV proteins are produced at normal sizes in infected cells, and a southern blot shows that there are no free-floating double-stranded DNA fragments. Northern blot in the new culture of uninfected cells shows viral RNA sequences; however, genomic polymerase chain reaction shows that there are no viral DNA sequences. Which of the following drugs most likely mimics the substrate of the protein this scientist is studying?