The assembly-defective phenotype of an FIV Gag polyprotein containing the SIV nucleocapsid zinc finger motifs is reversed by including the SIV SP2 domain in the chimeric protein.

Abstract excerpt

To gain insight into the functional relationship between the nucleocapsid (NC) domains of the Gag polyproteins of feline and simian immunodeficiency viruses, FIV and SIV, respectively, we generated two FIV Gag chimeric proteins containing different SIV NC and gag sequences. A chimeric FIV Gag protein (NC1) containing the SIV two zinc fingers motifs was incapable of assembling into virus-like particles. By...

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