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PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
2
pubmed:dateCreated
1985-12-11
pubmed:abstractText
Defective-interfering (DI) particles of the Sabin strain of type 1 poliovirus were generated on serial high m.o.i. passaging. The deletions, measured by agarose gel electrophoresis, appeared to comprise approximately 10% of the total genome. Analysis of the RNAs, after digestion with RNase T1, by two-dimensional polyacrylamide gel electrophoresis revealed that the locations of the deleted genome regions were similar to those of the DI particles of the Mahoney strain of type 1 poliovirus (A. Nomoto, A. Jacobson, Y. F. Lee, J. Dunn, and E. Wimmer, (1979), J. Mol. Biol. 128, 179-196). Taking the known nucleotide sequences of the total genome and large RNase T1-resistant oligonucleotides into account, the deletions of almost all DI RNAs were found to exist between nucleotide positions 1307 and 2630, a genome region encoding capsid polypeptides VP2, VP3, and VP1. In cells coinfected with the purified DI particles and the Sabin strain of type 2 or type 3 poliovirus, particles containing the DI genomes were effectively produced. These results suggest that encapsidation signals are conserved in all three serotypes of polioviruses. However, only a very small amount of similar DI particles appeared to be produced in cells coinfected with coxsackie virus B1, although the genomes of polioviruses and coxsackie viruses have common sequences and therefore these viruses are considered to have arisen from a common ancestor. These data may suggest differences in encapsidation signals between polioviruses and coxsackie viruses.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Apr
pubmed:issn
0042-6822
pubmed:author
pubmed:issnType
Print
pubmed:day
30
pubmed:volume
142
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
307-16
pubmed:dateRevised
2006-11-15
pubmed:meshHeading
pubmed:year
1985
pubmed:articleTitle
Isolation and characterization of defective-interfering particles of poliovirus Sabin 1 strain.
pubmed:publicationType
Journal Article, Comparative Study, Research Support, Non-U.S. Gov't