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Constriction and Dnm1p Recruitment Are Distinct Processes in Mitochondrial Fission
Open accessAbstract
Mitochondria undergo cycles of fusion and fission crucial for organelle homeostasis. Fission is regulated partially by recruitment of the large GTPase Dnm1p to the outer mitochondrial membrane. Using three-dimensional time-lapse fluorescence imaging of Saccharomyces cerevisiae cells, we found that Dnm1p-EGFP appears and disappears at “hot spots” along mitochondrial tubes. It forms patches that convert rapidly into different shapes regardless of whether mitochondrial fission ensues or not. Moreover, the thickness of the mitochondrial matrix displays frequent temporal fluctuations apparently unrelated to fission or to recruitment of Dnm1p-EGFP. These results suggest that mitochondrial fission requires coordination of at least two distinct processes.
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Cites
Mitochondrial dynamics and division in budding yeast
Shaw, J. M., & Nunnari, J. (2002) · Trends in Cell Biology · doi:10.1016/s0962-8924(01)02246-2 · Cited by 375
Cited by
ER Tubules Mark Sites of Mitochondrial Division
Friedman, J. R., Lackner, L. L., West, M., DiBenedetto, J. R., Nunnari, J., & Voeltz, G. K. (2011) · Science · doi:10.1126/science.1207385 · Cited by 2,072
Mitochondrial fusion and fission in cell life and death
Westermann, B. (2010) · Nature Reviews Molecular Cell Biology · doi:10.1038/nrm3013 · Cited by 2,002
Endoplasmic reticulum-mitochondria contacts: Function of the junction
Rowland, A. A., & Voeltz, G. K. (2012) · Nature Reviews Molecular Cell Biology · doi:10.1038/nrm3440 · Cited by 1,018
Mitochondrial fragmentation in neurodegeneration.
Knott, A. B., Perkins, G., Schwarzenbacher, R., & Bossy-Wetzel, E. (2008) · Nature Reviews Neuroscience · doi:10.1038/nrn2417 · Cited by 1,002
Mitochondrial Fusion and Fission in Mammals
Chan, D. C. (2006) · Annual Review of Cell and Developmental Biology · doi:10.1146/annurev.cellbio.22.010305.104638 · Cited by 972
Metadata
- Authors
- Legesse-Miller, A., Massol, R. H., & Kirchhausen, T.
- Venue
- Molecular Biology of the Cell
- Published
- 2003-05
- Volume
- 14
- Issue
- 5
- Pages
- 1953-1963
- ISSN
- 1059-1524 (ISSN-L)
- 1939-4586
- OpenAlex
- W2158914895
- Cited by
- 197
- References
- 1
- FWCI
- 4.07
- Type
- journal article
- Language
- en
- Open access
- green
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- Legesse-Miller, A., Massol, R. H., & Kirchhausen, T. (2003). Constriction and Dnm1p Recruitment Are Distinct Processes in Mitochondrial Fission. Molecular Biology of the Cell. https://doi.org/10.1091/mbc.e02-10-0657
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