FK-lac, an Episome with Unusual Properties found in a Wild Strain of a Klebsiella Species

Abstract

F-PRIMES, episomes consisting of an F-factor joined to a fragment of the bacterial chromosome, arise spontaneously in Hfr males of Escherichia coli, and are easily selected because of their infective properties1. It is therefore surprising that only two such episomes have been reported from natural sources: F0-lac found in a strain of Salmonella typhosa2… (More)
DOI: 10.1038/228162a0

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