A nonstructural protein of feline panleukopenia virus: expression in Escherichia coli and detection of multiple forms in infected cells.

Sequences coding for the nonstructural protein NS1 of the autonomous parvovirus feline panleukopenia virus were expressed in Escherichia coli as fusion proteins. The fusion proteins were specifically bound by antisera from canine parvovirus-infected dogs. Antisera against one of the fusion proteins bound to several proteins found only in feline panleukopenia virus-infected feline cells.