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Published February 21, 2001 | public
Journal Article

Physical and genetic characterization of the genome of Magnetospirillum magnetotacticum, strain MS-1


Pulsed-field gel analysis of Magnetospirillum magnetotacticum, strain MS-1, indicates that the genome is a single, circular structure of about 4.3 mb. A few genes, identified by sequence similarity, have been localized and arranged in a map with dnaA, indicating the presumed origin of replication. There are at least two rRNA operons. In addition, rRNA genes are found on a 40 kb, possibly extrachromosomal, structure. The genes thought to be involved in magnetite synthesis, bfr and magA, are located in the same 17% of the genome. A one base pair-overlap seen in the bfr genes of MS-1 is found also in the closely related magnetic strain AMB-1, but not in the non-magnetic relative A.itersonii.

Additional Information

© 2001 Elsevier Science B.V. Received 10 August 2000; received in revised form 4 December 2000; accepted 2 January 2001. Received by A.M. Campbell. This study was funded by grants from an anonymous donor (JLK.34029) and from the Undergraduate Biological Sciences Education Program of the Howard Hughes Institute and by EPRI contract, WO-4307-03.

Additional details

August 21, 2023
October 20, 2023