An efficient RNA aptamer against human influenza B virus hemagglutinin
Subash C B Gopinath1, Yuriko Sakamaki, Kazunori Kawasaki
1Functional Nucleic Acids Group, Institute for Biological Resources and Functions, National Institute of Advanced Industrial Science and Technology (AIST), Central 6, 1-1 Higashi, Tsukuba, Ibaraki 305-8566.
Abstract:
Aptamers are known for their higher discriminating ability between closely related molecules and their requirement for only a small region for binding, as compared to an antibody. In the present studies, we have isolated a specific RNA aptamer against the influenza virus B/Johannesburg/05/1999 by an in vitro selection procedure. The aptamer bound efficiently to the HA of influenza B and required 5 mM MgCl(2) ion for its recognition. The aptamer not only distinguished HA derived from the influenza A virus, but also inhibited HA-mediated membrane fusion.
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