ID#: 23232
Caption:
This illustration depicted a 3D computer-generated rendering of a whole influenza (flu) virus, rendered in semi-transparent blue, atop a black background. The transparent area in the center of the image, revealed the viral ribonucleoproteins (RNPs) inside. The RNPs were shown in white, with their coiled structures, and three-bulbed polymerase complex on the ends. An influenza virus’ RNP is composed of both RNA and protein. Every influenza virus has eight RNP segments, corresponding to the virus’ eight total gene segments. Three of these RNP segments encode the virus’ surface proteins, i.e., the HA, NA and M proteins. The virus’ hemagglutinin (HA) and neuraminidase (NA) surface proteins, were displayed in semi-transparent blue, sticking out of the surface of the virus. HA is a trimer, comprised of three subunits, while NA is a tetramer, comprised of four subunits, with a head region resembling a 4-leaf clover.
High Resolution: Click here for hi-resolution image (6.75 MB)
Content Provider(s): CDC/ Douglas Jordan
Creation Date: 2019
Photo Credit: Illustrator: Dan Higgins
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Copyright Restrictions: Permission is not required for public domain images, however, these images are provided by CDC and are available for personal, professional, and educational use with appropriate attribution. Redistribution must credit CDC and, where known, the individual photographer, and identify the CDC website as the free source. For additional terms see Use of Agency Materials | Other | CDC