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. 1987 Dec;61(12):3999–4006. doi: 10.1128/jvi.61.12.3999-4006.1987

Replication and packaging of choleraphage phi 149 DNA.

R Chowdhury 1, A Ray 1, P Ray 1, J Das 1
PMCID: PMC256021  PMID: 2824829

Abstract

The intercellular replication of the circularly permuted DNA of choleraphage phi 149 involves a concatemeric DNA structure with a size equivalent to six genome lengths. The synthesis of both monomeric and concatemeric DNAs during replication of phi 149 occurred in the cytoplasm. The concatemers served as the substrate for the synthesis of mature phage DNA, which was eventually packaged by a headful mechanism starting from a unique pac site in the concatemeric DNA. Packaging of DNA into phage heads involved binding of concatemeric DNA to the cell membrane. A scheme involving sequential packaging of five headfuls proceeding in the counterclockwise direction from the pac site is proposed. After infection under high-phosphate conditions, the concatemeric DNA intermediates were not formed, although synthesis of monomeric molecules was unaffected.

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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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