DASSAULT SYSTEMES BIOVIA LTD / SCIENCE PHOTO LIBRARY DASSAULT SYSTEMES BIOVIA LTD / SCIENCE PHOTO LIBRARY
HIV protease. Computer graphic of a molecule of the enzyme HIV protease. Colour-coding shows diff- erent structural elements within the molecule: helices are pink, sheet sections are blue, red cylinders represent coils. HIV protease cleaves proteins in the HIV (human immunodeficiency virus) virus. As with other enzymes its complex molecular shape determines how it acts.
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