title: Identification of a conserved non-protein-coding genomic element that plays an essential role in Alphabaculovirus pathogenesis.
abstract: Highly homologous sequences 154-157 bp in length grouped under the name of "conserved non-protein-coding element" (CNE) were revealed in all of the sequenced genomes of baculoviruses belonging to the genus Alphabaculovirus. A CNE alignment led to the detection of a set of highly conserved nucleotide clusters that occupy strictly conserved positions in the CNE sequence. The significant length of the CNE and conservation of both its length and cluster architecture were identified as a combination of characteristics that make this CNE different from known viral non-coding functional sequences. The essential role of the CNE in the Alphabaculovirus life cycle was demonstrated through the use of a CNE-knockout Autographa californica multiple nucleopolyhedrovirus (AcMNPV) bacmid. It was shown that the essential function of the CNE was not mediated by the presumed expression activities of the protein- and non-protein-coding genes that overlap the AcMNPV CNE. On the basis of the presented data, the AcMNPV CNE was categorized as a complex-structured, polyfunctional genomic element involved in an essential DNA transaction that is associated with an undefined function of the baculovirus genome.
authors.affiliation: Institute of Molecular Biology & Genetics of Ukrainian Academy of Science, Kiev, Ukraine.
authors.forename: Irina
authors.initials: I
authors.lastname: Kikhno
mesh_terms: D000818:Animals; D001483:Base Sequence; D002460:Cell Line; D017124:Conserved Sequence; D015967:Gene Expression Regulation, Viral; D016679:Genome, Viral; D008969:Molecular Sequence Data; D017924:Nucleopolyhedroviruses / Q000235:genetics* / Q000378:metabolism / Q000472:pathogenicity*; D016366:Open Reading Frames; D012045:Regulatory Sequences, Nucleic Acid; D016415:Sequence Alignment; D018411:Spodoptera / Q000166:cytology / Q000821:virology; D014779:Virus Replication
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