The neuraminidase of bat influenza viruses is not a neuraminidase

Replication-Competent Neuraminidase-Negative Influenza H5N1 Viruses

Influenza viruses resistant to neuraminidase inhibitors.

Neuraminidase inhibitors (NAIs) are antiviral drugs for treatment and prophylaxis of influenza. By blocking the activity of the enzyme neuraminidase, NAIs prevent new viral particles from being released. The increasing use of NAIs brings into focus the risk of drug resistance arising to the class. There are three levels of antiviral resistance according to the way that resistance can be detecte...

Neuraminidase gene sequence analysis of avian influenza H9N2 viruses isolated from Iran

Influenza A viruses possesses two virion surface glycoproteins including haemagglutinin (HA) and neuraminidase (NA). The NA plays an important role in viral replication and promotes virus release from infected cells and facilitates virus spread throughout the body. To find out any genomic changes that might be occurred on NA gene of avian influenza circulating viruses, we have genetically analy...

Resistance of influenza viruses to neuraminidase inhibitors--a review.

Influenza virus is a negative stranded RNA virus. It contains two surface glycoproteins, hemagglutinin (HA) and neuraminidase (NA). HA exists as a trimer and is responsible for binding to the terminal sialic acid bound to receptors on the surface of the target cell, leading to attachment and subsequent penetration by the virus into the cell. Influenza virus isolates from different animals appea...

Influenza neuraminidase

Influenza neuraminidase is the target of two licensed antivirals that have been very successful, with several more in development. However, neuraminidase has been largely ignored as a vaccine target despite evidence that inclusion of neuraminidase in the subunit vaccine gives increased protection. This article describes current knowledge on the structure, enzyme activity, and antigenic signific...