A new cryptic plasmid, pTA1030 (4.5 megadaltons, copy number 16), was characterized by restriction analysis, together with some other plasmids of Bacillus subtilis.

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http://www.ncbi.nlm.nih.gov/pmc/articles/PMC293956PMC
http://dx.doi.org/10.1128/jb.142.1.315-318.1980DOI Listing

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