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. 1981 Jan;37(1):372–382. doi: 10.1128/jvi.37.1.372-382.1981

Analysis of bacteriophage SP82 major "early" in vitro transcripts.

A T Panganiban, H R Whiteley
PMCID: PMC171015  PMID: 6260990

Abstract

A restriction map was constructed for the 17.5-kilobase SalI C fragment of SP82 DNA. Unfractionated SP82 DNA, the SalI C fragment, and restriction fragments derived from SalI-C were used as templates for in vitro synthesis by the Bacillus subtilis RNA polymerase, and the resulting transcripts were analyzed by gel electrophoresis. Comparison of the RNA species obtained from SalI-C with those produced from unfractionated DNA indicated that most of the RNAs and all of the major transcripts originate from the SalI C fragment; this fragment contains one copy of the terminally redundant portion of the genome. Seven major transcripts, a bidirectional terminator site, and 5 of the 13 minor transcripts were located within the 13-kilobase redundant region. The binding of polymerase to fragments of DNA produced by digestion of SalI-C with HpaII and HhaI was used to identify promoter-bearing regions within SalI-C.

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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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