Article
Adaptive mutations in the nuclear export protein of human-derived H5N1 strains facilitate a polymerase activity-enhancing conformation.
Journal of virology - 1 Jan 2014
Reuther Peter, Giese Sebastian, Götz Veronika, Kilb Normann, Mänz Benjamin, Brunotte Linda, Schwemmle Martin
Abstract excerpt
The nuclear export protein (NEP) (NS2) of the highly pathogenic human-derived H5N1 strain A/Thailand/1(KAN-1)/2004 with the adaptive mutation M16I greatly enhances the polymerase activity in human cells in a concentration-dependent manner. While low NEP levels enhance the polymerase activity, high levels are inhibitory. To gain insights into the underlying mechanism, we analyzed the effect of NEP deletion mutants...
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