Journal article
Desulfovibrio magneticus RS-1 contains an iron- and phosphorus-rich organelle distinct from its bulletshaped magnetosomes
ME Byrne, DA Ball, JL Guerquin-Kern, I Rouiller, TD Wu, KH Downing, H Vali, A Komeili
Proceedings of the National Academy of Sciences of the United States of America | NATL ACAD SCIENCES | Published : 2010
Abstract
Intracellular magnetite crystal formation by magnetotactic bacteria has emerged as a powerful model for investigating the cellular and molecular mechanisms of biomineralization, a process common to all branches of life. Although magnetotactic bacteria are phylogenetically diverse and their crystals morphologically diverse, studies to date have focused on a few, closely related species with similar crystal habits. Here, we investigate the process of magnetite biomineralization in Desulfovibrio magneticus sp. RS-1, the only reported species of cultured magnetotactic bacteria that is outside of the α-Proteobacteria and that forms bullet-shaped crystals. Using a variety of high-resolution imagin..
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Awarded by National Institute of General Medical Sciences
Funding Acknowledgements
We thank Kent McDonald and Reena Zalpuri of the University of California Berkeley Electron Microscope Laboratory for technical assistance; members of John Coates' laboratory for technical assistance and equipment; and Olga Draper, Shannon Greene, Sepehr Keyhani, Dorothee Murat, and Anna Quinlan for critical reading of the manuscript. We also thank the PICT-IBiSA imaging facility in the Institut Curie and J. Mui and Dr. S. K. Sears (both of the Facility for Electron Microscopy Research, McGill University) for assistance. A.K. is supported by a grant through the David and Lucille Packard Foundation. H.V. acknowledges financial support from the Natural Sciences and Engineering Research Council (NSERC) of Canada. I.R. received funding from NSERC (Grant 355873-08) as well as the receipt of a Canadian Institutes of Health Research New Investigator award. This work was supported in part by US Department of Energy Contract DE-AC02-05CH11231.