Replication of Transfected Plasmid DNA by Cells Infected with African Swine Fever Virus
Identifieur interne : 001686 ( Istex/Corpus ); précédent : 001685; suivant : 001687Replication of Transfected Plasmid DNA by Cells Infected with African Swine Fever Virus
Auteurs : Solange Oliveira ; Joã V. CostaSource :
- Virology [ 0042-6822 ] ; 1995.
Abstract
Abstract: Recombinant plasmids containing African swine fever virus (ASFV) DNA fragments covering all the virus genome were translacteal into infected cells in order to detect viral origins of DNA replication. Plasmid replication was monitored by sensitivity to MboI, which cleaves only replicated, unmethylated DNA, and resistance to DpnI, which cleaves only the same methylated sequence. All the recombinants replicated to a similar extent, indicating that ASFV does not use a preferred origin for DNA replication. Circular plasmids without viral inserts were also replicated, but linearized plasmids or lambda bacteriophage DNA were not replicated. Replicated plasmid DNA began to accumulate with a time course similar to viral DNA, starting between 6 and 12 hr p.i. and increasing steadily for about 18 hr. This apparent dependence on viral functions was confirmed by the sensitivity of plasmid replication to phosphonoacetic acid and resistance to aphidicolin and by the reduction of replication in cells infected with a mutant defective in DNA replication. Replicated plasmid DNA was present as unit length circles and as large dimension forms, probably head-to-tail concatemers. The results of two-dimensional electrophoresis (neutral/alkaline) favor a rolling-circle mechanism for plasmid DNA replication.
Url:
DOI: 10.1006/viro.1995.1098
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Costa</name><affiliation><mods:affiliation>Laboratory of Virology II, Gulbenkian Institute of Science, Apartado 14, P-2781 Oeiras Codex, Portugal</mods:affiliation></affiliation></author></analytic><monogr></monogr><series><title level="j">Virology</title><title level="j" type="abbrev">YVIRO</title><idno type="ISSN">0042-6822</idno><imprint><publisher>ELSEVIER</publisher><date type="published" when="1995">1995</date><biblScope unit="volume">207</biblScope><biblScope unit="issue">2</biblScope><biblScope unit="page" from="392">392</biblScope><biblScope unit="page" to="399">399</biblScope></imprint><idno type="ISSN">0042-6822</idno></series></biblStruct></sourceDesc><seriesStmt><idno type="ISSN">0042-6822</idno></seriesStmt></fileDesc><profileDesc><textClass></textClass><langUsage><language ident="en">en</language></langUsage></profileDesc></teiHeader><front><div type="abstract" xml:lang="en">Abstract: Recombinant plasmids containing African swine fever virus (ASFV) DNA fragments covering all the virus genome were translacteal into infected cells in order to detect viral origins of DNA replication. Plasmid replication was monitored by sensitivity to MboI, which cleaves only replicated, unmethylated DNA, and resistance to DpnI, which cleaves only the same methylated sequence. All the recombinants replicated to a similar extent, indicating that ASFV does not use a preferred origin for DNA replication. Circular plasmids without viral inserts were also replicated, but linearized plasmids or lambda bacteriophage DNA were not replicated. Replicated plasmid DNA began to accumulate with a time course similar to viral DNA, starting between 6 and 12 hr p.i. and increasing steadily for about 18 hr. This apparent dependence on viral functions was confirmed by the sensitivity of plasmid replication to phosphonoacetic acid and resistance to aphidicolin and by the reduction of replication in cells infected with a mutant defective in DNA replication. Replicated plasmid DNA was present as unit length circles and as large dimension forms, probably head-to-tail concatemers. The results of two-dimensional electrophoresis (neutral/alkaline) favor a rolling-circle mechanism for plasmid DNA replication.</div></front></TEI><istex><corpusName>elsevier</corpusName><author><json:item><name>Solange Oliveira</name><affiliations><json:string>Laboratory of Virology II, Gulbenkian Institute of Science, Apartado 14, P-2781 Oeiras Codex, Portugal</json:string></affiliations></json:item><json:item><name>Joã V. 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Circular plasmids without viral inserts were also replicated, but linearized plasmids or lambda bacteriophage DNA were not replicated. Replicated plasmid DNA began to accumulate with a time course similar to viral DNA, starting between 6 and 12 hr p.i. and increasing steadily for about 18 hr. This apparent dependence on viral functions was confirmed by the sensitivity of plasmid replication to phosphonoacetic acid and resistance to aphidicolin and by the reduction of replication in cells infected with a mutant defective in DNA replication. Replicated plasmid DNA was present as unit length circles and as large dimension forms, probably head-to-tail concatemers. 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Plasmid replication was monitored by sensitivity to MboI, which cleaves only replicated, unmethylated DNA, and resistance to DpnI, which cleaves only the same methylated sequence. All the recombinants replicated to a similar extent, indicating that ASFV does not use a preferred origin for DNA replication. Circular plasmids without viral inserts were also replicated, but linearized plasmids or lambda bacteriophage DNA were not replicated. Replicated plasmid DNA began to accumulate with a time course similar to viral DNA, starting between 6 and 12 hr p.i. and increasing steadily for about 18 hr. This apparent dependence on viral functions was confirmed by the sensitivity of plasmid replication to phosphonoacetic acid and resistance to aphidicolin and by the reduction of replication in cells infected with a mutant defective in DNA replication. Replicated plasmid DNA was present as unit length circles and as large dimension forms, probably head-to-tail concatemers. 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The results of two-dimensional electrophoresis (neutral/alkaline) favor a rolling-circle mechanism for plasmid DNA replication.</ce:simple-para></ce:abstract-sec></ce:abstract></head></converted-article></istex:document></istex:metadataXml><mods version="3.6"><titleInfo lang="en"><title>Replication of Transfected Plasmid DNA by Cells Infected with African Swine Fever Virus</title></titleInfo><titleInfo type="alternative" lang="en" contentType="CDATA"><title>Replication of Transfected Plasmid DNA by Cells Infected with African Swine Fever Virus</title></titleInfo><name type="personal"><namePart type="given">Solange</namePart><namePart type="family">Oliveira</namePart><affiliation>Laboratory of Virology II, Gulbenkian Institute of Science, Apartado 14, P-2781 Oeiras Codex, Portugal</affiliation><role><roleTerm type="text">author</roleTerm></role></name><name type="personal"><namePart type="given">Joã V.</namePart><namePart type="family">Costa</namePart><affiliation>Laboratory of Virology II, Gulbenkian Institute of Science, Apartado 14, P-2781 Oeiras Codex, Portugal</affiliation><role><roleTerm type="text">author</roleTerm></role></name><typeOfResource>text</typeOfResource><genre type="research-article" displayLabel="Full-length article" authority="ISTEX" authorityURI="https://content-type.data.istex.fr" valueURI="https://content-type.data.istex.fr/ark:/67375/XTP-1JC4F85T-7">research-article</genre><originInfo><publisher>ELSEVIER</publisher><dateIssued encoding="w3cdtf">1995</dateIssued><copyrightDate encoding="w3cdtf">1995</copyrightDate></originInfo><language><languageTerm type="code" authority="iso639-2b">eng</languageTerm><languageTerm type="code" authority="rfc3066">en</languageTerm></language><abstract lang="en">Abstract: Recombinant plasmids containing African swine fever virus (ASFV) DNA fragments covering all the virus genome were translacteal into infected cells in order to detect viral origins of DNA replication. Plasmid replication was monitored by sensitivity to MboI, which cleaves only replicated, unmethylated DNA, and resistance to DpnI, which cleaves only the same methylated sequence. All the recombinants replicated to a similar extent, indicating that ASFV does not use a preferred origin for DNA replication. Circular plasmids without viral inserts were also replicated, but linearized plasmids or lambda bacteriophage DNA were not replicated. Replicated plasmid DNA began to accumulate with a time course similar to viral DNA, starting between 6 and 12 hr p.i. and increasing steadily for about 18 hr. This apparent dependence on viral functions was confirmed by the sensitivity of plasmid replication to phosphonoacetic acid and resistance to aphidicolin and by the reduction of replication in cells infected with a mutant defective in DNA replication. Replicated plasmid DNA was present as unit length circles and as large dimension forms, probably head-to-tail concatemers. 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