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. 1976 Mar;17(3):841–853. doi: 10.1128/jvi.17.3.841-853.1976

Multiplication of parvovirus LuIII in a synchronized culture system. III. Replication of viral DNA.

G Siegl, M Gautschi
PMCID: PMC515484  PMID: 1255860

Abstract

The replication of the single-stranded DNA (ssDNA) of parvovirus LuIII was studied in synchronized HeLa cells. After infection of the cells in early S phase, synthesis of a replicative form (RF) DNA became detectable as early as 9 h postinfection, i.e., after display of the cellular helper function(s) indispensable for the replication of LuIII virus. According to digestion with nuclease S1, hybridization studies, and electron microscopy, RF DNA is a linear, double-stranded molecule comparable in length to mature ssDNA. It sedimented around 15S in neutral solution and banded at 1.714 g/ml in CsCl. Moreover, replication of LuIII DNA obviously includes a further replicative intermediate DNA which sedimented in front of RF DNA and bore single-stranded side-chains. Newly synthesized DNA disappeared from pools containing both RF DNA and replicative intermediate DNA within 5 min and reappeared in progeny virions only after 15 min. Intranuclear accumulation of significant amounts of progeny ssDNA could not be detected. It was postulated, therefore, that newly synthesized ssDNA is immediately enclosed in a stable maturation complex and resists extraction by the method of Hirt (1967).

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Selected References

These references are in PubMed. This may not be the complete list of references from this article.

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