Abstract:
:A minor core protein, VP4, of bluetongue virus serotype 10 (BTV-10) has been synthesized in insect cells infected with a genetically manipulated recombinant baculovirus. When insect cells were coinfected by this recombinant virus and a recombinant baculovirus expressing the two major core proteins (VP3 and VP7) of the virus, core-like particles (CLPs) consisting of all three proteins were formed. Purified CLPs reacted with [32P]GTP which was covalently bound to VP4 only. Similarly reconstituted CLPs with VP1 or VP6 did not form covalent complexes with [32P]GTP. The virion-derived VP4 was also shown to have GTP-binding activity. The covalent binding of GTP indicates that expressed VP4 not only is biologically active but also is the candidate guanylyl transferase of the virus. The optimum reaction conditions for GTP binding by VP4 have been investigated.
journal_name
Virologyjournal_title
Virologyauthors
Le Blois H,French T,Mertens PP,Burroughs JN,Roy Pdoi
10.1016/0042-6822(92)90600-tsubject
Has Abstractpub_date
1992-08-01 00:00:00pages
757-61issue
2eissn
0042-6822issn
1096-0341journal_volume
189pub_type
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