Display of the antigenic region of Nipah virus nucleocapsid protein on hepatitis B virus capsid

The C-terminal domain of Nipah virus (NiV) nucleocapsid protein (NP401–532) was inserted at the N-terminus and the immunodominant loop of hepatitis B core antigen (HBc). The stability of NP401–532 increased tremendously when displayed on the HBc particles. These particles reacted specifically with the swine anti-NiV and the human anti-HBc antisera.