Complete sequence analysis of two methanotroph-apecificrepABC-containing plasmids fromMethylocystissp. Strain SC2

Dam, Bomba; Kube, Michael GND; Dam, Somasri; Reinhardt, Richard; Liesack, Werner

The complete nucleotide sequences of two large, low-copy-number plasmids of 229.6 kb (pBSC2-1) and 143.5 kb (pBSC2-2) were determined during assembly of the whole-genome shotgun sequences of the methane-oxidizing bacterium Methylocystis sp. strain SC2. The physical existence of the two plasmids in strain SC2 was confirmed by pulsed-field gel electrophoresis followed by Southern hybridization. Both plasmids have a conserved replication module of the repABC system and carry genes involved in their faithful maintenance and conjugation. In addition, they contain genes that might be involved in essential metabolic processes. These include several heavy metal resistance genes and copper transport genes in pBSC2-1 and a complete nitrous oxide reductase operon and a pmoC singleton in pBSC2-2, the latter encoding the PmoC subunit of particulate methane monooxygenase.

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Dam, Bomba / Kube, Michael / Dam, Somasri / et al: Complete sequence analysis of two methanotroph-apecificrepABC-containing plasmids fromMethylocystissp. Strain SC2. 2012.

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