HIV Enzyme Structure (VIDEO) American Institute of Physics This video is under embargo. Please login to access this video. Caption When it binds an inhibitor drug, HIV reverse transcriptase is forced into an open state that cannot transcribe RNA to DNA though a single amino acid mutation can make the protein drug resistant. Credit G. Schauer/University of Pittsburgh Usage Restrictions This video may be used only with appropriate caption and credit. License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.