title: The sequence of the Helicoverpa armigera single nucleocapsid nucleopolyhedrovirus genome.
abstract: The nucleotide sequence of the Helicoverpa armigera single-nucleocapsid nucleopolyhedrovirus (HaSNPV) DNA genome was determined and analysed. The circular genome encompasses 131,403 bp, has a G+C content of 39.1 mol% and contains five homologous regions with a unique pattern of repeats. Computer-assisted analysis revealed 135 putative ORFs of 150 nt or larger; 100 ORFs have homologues in Autographa californica multicapsid NPV (AcMNPV) and a further 15 ORFs have homologues in other baculoviruses such as Lymantria dispar MNPV (LdMNPV), Spodoptera exigua MNPV (SeMNPV) and Xestia c-nigrum granulovirus (XcGV). Twenty ORFs are unique to HaSNPV without homologues in GenBank. Among the six previously sequenced baculoviruses, AcMNPV, Bombyx mori NPV (BmNPV), Orgyia pseudotsugata MNPV (OpMNPV), SeMNPV, LdMNPV and XcGV, 65 ORFs are conserved and hence are considered as core baculovirus genes. The mean overall amino acid identity of HaSNPV ORFs was the highest with SeMNPV and LdMNPV homologues. Other than three 'baculovirus repeat ORFs' (bro) and two 'inhibitor of apoptosis' (iap) genes, no duplicated ORFs were found. A putative ORF showing similarity to poly(ADP-ribose) glycohydrolases (parg) was newly identified. The HaSNPV genome lacks a homologue of the major budded virus (BV) glycoprotein gene, gp64, of AcMNPV, BmNPV and OpMNPV. Instead, a homologue of SeMNPV ORF8, encoding the major BV envelope protein, has been identified. GeneParityPlot analysis suggests that HaSNPV, SeMNPV and LdMNPV (group II) have structural genomic features in common and are distinct from the group I NPVs and from the granuloviruses. Cluster alignment between group I and group II baculoviruses suggests that they have a common ancestor.
authors: Laboratory of Virology, Wageningen University, Binnenhaven 11, 6709 PD Wageningen, The Netherlands2.|Joint-Laboratory of Invertebrate Virology, Institute of Virology, Chinese Academy of Sciences, Wuhan, Hubei 430071, People's Republic of China1.
authors: Xinwen
authors: X
authors: Chen
authors: Laboratory of Virology, Wageningen University, Binnenhaven 11, 6709 PD Wageningen, The Netherlands2.
authors: Wilfred F J
authors: WFJ
authors: IJkel
authors: Greenomics, Plant Research International, PO Box 16, 6700 AA Wageningen, The Netherlands3.
authors: Renato
authors: R
authors: Tarchini
authors: Joint-Laboratory of Invertebrate Virology, Institute of Virology, Chinese Academy of Sciences, Wuhan, Hubei 430071, People's Republic of China1.
authors: Xiulian
authors: X
authors: Sun
authors: Greenomics, Plant Research International, PO Box 16, 6700 AA Wageningen, The Netherlands3.
authors: Hans
authors: H
authors: Sandbrink
authors: Joint-Laboratory of Invertebrate Virology, Institute of Virology, Chinese Academy of Sciences, Wuhan, Hubei 430071, People's Republic of China1.
authors: Hualin
authors: H
authors: Wang
authors: Greenomics, Plant Research International, PO Box 16, 6700 AA Wageningen, The Netherlands3.
authors: Sander
authors: S
authors: Peters
authors: Laboratory of Virology, Wageningen University, Binnenhaven 11, 6709 PD Wageningen, The Netherlands2.
authors: Douwe
authors: D
authors: Zuidema
authors: Greenomics, Plant Research International, PO Box 16, 6700 AA Wageningen, The Netherlands3.
authors: René Klein
authors: RK
authors: Lankhorst
authors: Laboratory of Virology, Wageningen University, Binnenhaven 11, 6709 PD Wageningen, The Netherlands2.
authors: Just M
authors: JM
authors: Vlak
authors: Joint-Laboratory of Invertebrate Virology, Institute of Virology, Chinese Academy of Sciences, Wuhan, Hubei 430071, People's Republic of China1.
authors: Zhihong
authors: Z
authors: Hu
mesh_terms: D001482:Base Composition; D001483:Base Sequence; D016679:Genome, Viral; D006026:Glycoside Hydrolases; D008969:Molecular Sequence Data; D019251:Nucleocapsid / Q000235:genetics*; D017924:Nucleopolyhedroviruses / Q000235:genetics*; D016366:Open Reading Frames; D016415:Sequence Alignment
chemical_list: D006026:Glycoside Hydrolases