LAGUNA DESIGN / SCIENCE PHOTO LIBRARY LAGUNA DESIGN / SCIENCE PHOTO LIBRARY
HIV-1 polypurine tract. Molecular model of the polypurine tract (PPT, red) from human immunodeficiency virus-1 (HIV-1) complexed with reverse transcriptase (green). PPT is used to prime positive strand DNA (deoxyribonucleic acid) synthesis during replication of HIV's genome within the host cell.
Model release not required. Property release not required.