Respiratory syncytial virus nucleocapsid protein (N) expressed in insect cells forms nucleocapsid-like structures.

Virus Res

Pasteur Mérieux Sérums et Vaccins, Marcy L'Etoile, France.

Published: February 1994

The gene coding for the N protein of RSV strain Long has been cloned and sequenced. It was introduced behind the polyhedrin promoter of the shuttle vector pVL941 and baculoviruses containing the N gene were constructed by homologous recombination. Infection of Spodoptera frugiperda 9 cells resulted in the production of large amounts of a protein similar in size and antigenicity to the authentic N protein. The baculovirus expressed N protein was concentrated in the cytoplasm of the insect cells and could be extracted at low salt concentration. Nucleocapsid structures similar to those purified from RSV-infected cells could be observed by electron microscopy after negative staining of cellular extracts.

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http://dx.doi.org/10.1016/0168-1702(94)90003-5DOI Listing

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