title: Immunogenic properties of recombinant ectodomain of Newcastle disease virus hemagglutinin-neuraminidase protein expressed in Escherichia coli.
abstract: Hemagglutinin-neuraminidase (HN) protein of Newcastle disease virus (NDV) plays a vital role in the viral infectivity, host immunity, and disease diagnosis. A portion of the HN gene encoding the ectodomain (nt 142-1739) was cloned and expressed in Escherichia coli yielding an insoluble HN protein and a soluble NusA-HN protein containing N-utilization substance A (NusA) fusion component. Both recombinant proteins were purified and used for immunization of chickens. The recombinant HN protein induced higher antibody titers as compared to the recombinant NusA-HN protein. These antibodies were able to react in immunoblot analysis with the corresponding recombinant proteins as well as with the HN protein of NDV.
authors.affiliation: Department of Microbiology, Universiti Putra Malaysia, Selangor, Malaysia.
authors.forename: S K
authors.initials: SK
authors.lastname: Wong
authors.forename: W S
authors.initials: WS
authors.lastname: Tan
authors.forename: A R
authors.initials: AR
authors.lastname: Omar
authors.forename: C S
authors.initials: CS
authors.lastname: Tan
authors.forename: K
authors.initials: K
authors.lastname: Yusoff
mesh_terms: D000818:Animals; D000914:Antibodies, Viral / Q000097:blood; D002645:Chickens; D003001:Cloning, Molecular; D004926:Escherichia coli; D015870:Gene Expression; D015707:HN Protein / Q000276:immunology*; D009522:Newcastle disease virus / Q000235:genetics / Q000276:immunology*; D011994:Recombinant Proteins / Q000276:immunology; D014614:Vaccines, Synthetic / Q000276:immunology; D014764:Viral Proteins / Q000276:immunology*; D014765:Viral Vaccines / Q000235:genetics / Q000276:immunology*
chemical_list: D000914:Antibodies, Viral; D015707:HN Protein; D011994:Recombinant Proteins; D014614:Vaccines, Synthetic; D014764:Viral Proteins; D014765:Viral Vaccines