title: Genomic sequence, organization and characteristics of a new nucleopolyhedrovirus isolated from Clanis bilineata larva.
abstract: BACKGROUND
  Baculoviruses are well known for their potential as biological agents for controlling agricultural and forest pests. They are also widely used as expression vectors in molecular cloning studies. The genome sequences of 48 baculoviruses are currently available in NCBI databases. As the number of sequenced viral genomes increases, it is important for the authors to present sufficiently detailed analyses and annotations to advance understanding of them. In this study, the complete genome of Clanis bilineata nucleopolyhedrovirus (ClbiNPV) has been sequenced and analyzed in order to understand this virus better.
  
  
  RESULTS
  The genome of ClbiNPV contains 135,454 base pairs (bp) with a G+C content of 37%, and 139 putative open reading frames (ORFs) of at least 150 nucleotides. One hundred and twenty-six of these ORFs have homologues with other baculovirus genes while the other 13 are unique to ClbiNPV. The 30 baculovirus core genes are all present in ClbiNPV. Phylogenetic analysis based on the combined pif-2 and lef-8 sequences places ClbiNPV in the Group II Alphabaculoviruses. This result is consistent with the absence of gp64 from the ClbiNPV genome and the presence instead of a fusion protein gene, characteristic of Group II. Blast searches revealed that ClbiNPV encodes a photolyase-like gene sequence, which has a 1-bp deletion when compared with photolyases of other baculoviruses. This deletion disrupts the sequence into two small photolyase ORFs, designated Clbiphr-1 and Clbiphr-2, which correspond to the CPD-DNA photolyase and FAD-binding domains of photolyases, respectively.
  
  
  CONCLUSIONS
  ClbiNPV belongs to the Group II Alphabaculoviruses and is most closely related to OrleNPV, LdMNPV, TnSNPV, EcobNPV and ChchNPV. It contains a variant DNA photolyase gene, which only exists in ChchNPV, TnSNPV and SpltGV among the baculoviruses.
authors.affiliation: Institute of Life Sciences, Jiangsu University, Zhenjiang 212013, PR China. zhushanying@ujs.edu.cn
authors.forename: Shan-Ying
authors.initials: SY
authors.lastname: Zhu
authors.forename: Jian-Ping
authors.initials: JP
authors.lastname: Yi
authors.forename: Wei-De
authors.initials: WD
authors.lastname: Shen
authors.forename: Li-Qun
authors.initials: LQ
authors.lastname: Wang
authors.forename: Hua-Gang
authors.initials: HG
authors.lastname: He
authors.forename: Yong
authors.initials: Y
authors.lastname: Wang
authors.forename: Bing
authors.initials: B
authors.lastname: Li
authors.forename: Wen-Bing
authors.initials: WB
authors.lastname: Wang
mesh_terms: D000818:Animals; D001482:Base Composition; D001483:Base Sequence; D004279:DNA, Viral / Q000235:genetics; D004255:Deoxyribodipyrimidine Photo-Lyase / Q000235:genetics; D005814:Genes, Viral; D016679:Genome, Viral; D007814:Larva / Q000821:virology; D007915:Lepidoptera / Q000821:virology*; D017924:Nucleopolyhedroviruses / Q000235:genetics*; D016366:Open Reading Frames; D010802:Phylogeny; D017422:Sequence Analysis, DNA; D017384:Sequence Deletion
chemical_list: D004279:DNA, Viral; D004255:Deoxyribodipyrimidine Photo-Lyase