Complete DNA Sequence and Analysis of the Transferable Multiple-Drug Resistance Plasmids (R Plasmids) from Photobacterium damselae subsp. piscicida Isolates Collected in Japan and the United States
- 1 February 2008
- journal article
- research article
- Published by American Society for Microbiology in Antimicrobial Agents and Chemotherapy
- Vol. 52 (2) , 606-611
- https://doi.org/10.1128/aac.01216-07
Abstract
Photobacterium damselae subsp. piscicida is a bacterial fish pathogen that causes a disease known as pasteurellosis. Two transferable multiple-drug resistance (R) plasmids, pP99-018 (carrying resistance to kanamycin, chloramphenicol, tetracycline, and sulfonamide) and pP91278 (carrying resistance to tetracycline, trimethoprim, and sulfonamide), isolated from P. damselae subsp. piscicida strains from Japan (P99-018) and the United States (P91278), respectively, were completely sequenced and analyzed, along with the multiple-drug resistance regions of three other R plasmids also from P. damselae subsp. piscicida strains from Japan. The sequence structures of pP99-018 (150,057 bp) and pP91278 (131,520 bp) were highly conserved, with differences due to variation in the drug resistance and conjugative transfer regions. These plasmids, shown to be closely related to the IncJ element R391 (a conjugative, self-transmitting, integrating element, or constin), were divided into the conjugative transfer, replication, partition, and multiple-drug resistance regions. Each of the five multiple-drug resistance regions sequenced exhibited unique drug resistance marker composition and arrangement.Keywords
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