Sequence and analysis of the genome of a baculovirus pathogenic for Lymantria dispar.
The genome of the Lymantria dispar multinucleocapsid nucleopolyhedrovirus (LdMNPV) was sequenced and analyzed. It is composed of 161,046 bases with a G + C content of 57.5% and contains 163 putative open reading frames (ORFs) of >/=150 nucleotides. Homologs were found to 95 of the 155 genes predicted for the Autographa californica MNPV (AcMNPV) genome. More than 9% of the LdMNPV genome was occupied by 16 repeated genes related to AcMNPV ORF2. Readily identifiable homologs of several genes that have been reported to play important roles in the AcMNPV life cycle are not present; these include ie-2, a transcriptional transactivator, and gp64, a major envelope glycoprotein of the nonoccluded form of the virus. A number of genes lacking in AcMNPV but present in other baculoviruses were identified; these include two viral enhancing factor homologs, a second copy of a conotoxin-like gene, and a dutpase homolog. Although a single gene predicted to encode a large subunit of ribonucleotide reductase was found, two different copies of the small subunit gene were present. In addition, homologs of genes not previously reported for baculoviruses were identified, including a predicted protein with homology to DNA ligases and another that has motifs most closely related to a yeast mitochondrial helicase. Thirteen homologous regions (hrs) containing 54 repeated sequences that include 30-bp imperfect palindromes were identified. The imperfect palindromes are related to those from other baculoviruses.
Kuzio
J
J
National Library of Medicine, National Institutes of Health, Bethesda, Maryland, 20894, USA.
Pearson
M N
MN
Harwood
S H
SH
Funk
C J
CJ
Evans
J T
JT
Slavicek
J M
JM
Rohrmann
G F
GF
D000595:Amino Acid Sequence; D000818:Animals; D001483:Base Sequence; D016679:Genome, Viral; D051034:Inhibitor of Apoptosis Proteins; D008969:Molecular Sequence Data; D008978:Mollusk Venoms / Q000235:genetics; D009036:Moths / Q000235:genetics*; D017924:Nucleopolyhedroviruses / Q000235:genetics*; D016366:Open Reading Frames / Q000235:genetics; D016415:Sequence Alignment; D017386:Sequence Homology, Amino Acid; D012689:Sequence Homology, Nucleic Acid; D014764:Viral Proteins / Q000235:genetics
D051034:Inhibitor of Apoptosis Proteins; D008978:Mollusk Venoms; D014764:Viral Proteins; C086430:inhibitor of apoptosis, Nucleopolyhedrovirus