title: Identification and characterization of a conserved baculoviral structural protein ODVP-6E/ODV-E56 from Choristoneura fumiferana granulovirus.
abstract: A gene that encodes a homologue to baculoviral ODVP-6E/ODV-E56, a baculoviral envelope-associated viral structural protein, has been identified and sequenced on the genome of Choristoneura fumiferana granulovirus (ChfuGV). The ChfuGV odvp-6e/odv-e56 gene was located on an 11-kb BamHI subgenomic fragment using different sets of degenerated primers, which were designed using the results of the protein sequencing of a major 39 kDa structural protein that is associated with the occlusion-derived virus (ODV). The gene has a 1062 nucleotide (nt) open-reading frame (ORF) that encodes a protein with 353 amino acids with a predicted molecular mass of 38.5 kDa. The amino acid sequence data that was derived from the nucleotide sequence in ChfuGV was compared to those of other baculoviruses. ChfuGV ODVP-6E/ODV-E56, along with other baculoviral ODVP-6E/ODV-E56 proteins, all contained two putative transmembrane domains at their C-terminus. Several putative N- and O-glycosylation, N-myristoylation, and phosphorylation sites were detected in the ChfuGV ODVP-6E/ODV-E56 protein. A similar pattern was detected when a hydrophobicity-plots comparison was performed on ChfuGV ODVP-6E/ODV-E56 with other baculoviral homologue proteins. At the nucleotide level, a late promoter motif (GTAAG) was located at -14 nt upstream to the start codon of the ChfuGV odvp-6e/odv-e56 gene. A slight variant of the polyadenylation signal, AATAAT, was detected at the position +10 nt that is downstream from the termination signal. A phylogenetic tree for baculoviral ODVP-6E/ODV-E56 was constructed using a maximum parsimony analysis. The phylogenetic estimation demonstrated that ChfuGV ODVP-6E/ODV-E56 is most closely related to those of Cydia pomonella granulovirus (CpGV) and Plutella xylostella granulovirus (PxGV).
authors.affiliation: Institut national de la recherche scientifique-Institut Armand-Frappier 531 Blvd des Prairies, H7V 1B7, Laval-Canada. kiarashidan@juno.com
authors.forename: Kianoush Khajeh
authors.initials: KK
authors.lastname: Rashidan
authors.forename: Nasha
authors.initials: N
authors.lastname: Nassoury
authors.forename: Paresa N
authors.initials: PN
authors.lastname: Giannopoulos
authors.forename: Claude
authors.initials: C
authors.lastname: Guertin
mesh_terms: D000595:Amino Acid Sequence; D000818:Animals; D016367:Baculoviridae; D001483:Base Sequence; D003001:Cloning, Molecular; D004591:Electrophoresis, Polyacrylamide Gel; D006031:Glycosylation; D025722:Granulovirus / Q000378:metabolism*; D016013:Likelihood Functions; D008969:Molecular Sequence Data; D009036:Moths / Q000821:virology*; D010766:Phosphorylation; D010802:Phylogeny; D011401:Promoter Regions, Genetic; D017434:Protein Structure, Tertiary; D017386:Sequence Homology, Amino Acid; D014759:Viral Envelope Proteins / Q000737:chemistry* / Q000378:metabolism
chemical_list: C098821:ODVP-6E protein, baculovirus; D014759:Viral Envelope Proteins