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. 1989 Apr;55(4):1037–1039. doi: 10.1128/aem.55.4.1037-1039.1989

Identification of Pseudomonas alcaligenes chromosomal DNA in the plasmid DNA of the chlorobenzene-degrading recombinant Pseudomonas putida strain CB1-9.

B F Carney 1, L Kröckel 1, J V Leary 1, D D Focht 1
PMCID: PMC184244  PMID: 2729978

Abstract

The recombinant Pseudomonas putida strain CB1-9, which acquired the ability to grow on chlorobenzenes, contains a 33-kilobase (kb) plasmid (pKFL3) which lacked homology to an indigenous 15-kb plasmid (pKFL1) in Pseudomonas alcaligenes C-0 parent but was homologous to a 55-kb plasmid (pKFL2) from the P. putida R5-3 parent. Chromosomal DNA of P. alcaligenes C-0 hybridized to probes prepared from pKFL3 but not to probes prepared from pKFL2. A single clone from a genomic library of P. alcaligenes C-0 hybridized to EcoRI-digested pKFL3. Southern blot hybridization with the insert DNA from that clone identified homology with specific restriction enzyme fragments in pKFL3. The ability of the recombinant to utilize 3-chlorobenzoate, chlorobenzene, and 1,4-dichlorobenzene as well as its loss of utilization of xylenes and methylbenzoates appears to be associated with the transfer and integration of chromosomal DNA from P. alcaligenes into a Tol-like plasmid of P. putida R5-3.

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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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