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Magnetosomes Are Cell Membrane Invaginations Organized by the Actin-Like Protein MamK
Abstract
Magnetosomes are membranous bacterial organelles sharing many features of eukaryotic organelles. Using electron cryotomography, we found that magnetosomes are invaginations of the cell membrane flanked by a network of cytoskeletal filaments. The filaments appeared to be composed of MamK, a homolog of the bacterial actin-like protein MreB, which formed filaments in vivo. In a mamK deletion strain, the magnetosome-associated cytoskeleton was absent and individual magnetosomes were no longer organized into chains. Thus, it seems that prokaryotes can use cytoskeletal filaments to position organelles within the cell.
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Metadata
- Authors
- Komeili, A., Li, Z., Newman, D. K., & Jensen, G. J.
- Venue
- Science
- Published
- 2006-01-13
- Volume
- 311
- Issue
- 5758
- Pages
- 242-245
- ISSN
- 0036-8075 (ISSN-L)
- 1095-9203
- OpenAlex
- W2081320341
- Cited by
- 646
- References
- 0
- FWCI
- 13.37
- Type
- journal article
- Language
- en
- Open access
- closed
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- Komeili, A., Li, Z., Newman, D. K., & Jensen, G. J. (2006). Magnetosomes Are Cell Membrane Invaginations Organized by the Actin-Like Protein MamK. Science. https://doi.org/10.1126/science.1123231
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