The DOI matches its Crossref record; 48 of the 48 references it cites were found in a registry or an index.
The Yeast Endosomal Na + (K + )/H + Exchanger Nhx1 Regulates Cellular pH to Control Vesicle Trafficking
Open accessAbstract
The relationship between endosomal pH and function is well documented in viral entry, endosomal maturation, receptor recycling, and vesicle targeting within the endocytic pathway. However, specific molecular mechanisms that either sense or regulate luminal pH to mediate these processes have not been identified. Herein we describe the use of novel, compartment-specific pH indicators to demonstrate that yeast Nhx1, an endosomal member of the ubiquitous NHE family of Na + /H + exchangers, regulates luminal and cytoplasmic pH to control vesicle trafficking out of the endosome. Loss of Nhx1 confers growth sensitivity to low pH stress, and concomitant acidification and trafficking defects, which can be alleviated by weak bases. Conversely, weak acids cause wild-type yeast to present nhx1Δ trafficking phenotypes. Finally, we report that Nhx1 transports K + in addition to Na + , suggesting that a single mechanism may responsible for both pH and K + -dependent endosomal processes. This presents the newly defined family of eukaryotic endosomal NHE as novel targets for pharmacological inhibition to alleviate pathological states associated with organellar alkalinization.
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Cites
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The vacuolar (H+)-ATPases — nature's most versatile proton pumps
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Killing activity of neutrophils is mediated through activation of proteases by K+ flux
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Cited by
Bassil, E., Tajima, H., Liang, Y.-C., Ohto, M.-A., Ushijima, K., Nakano, R., Esumi, T., Coku, A., Belmonte, M., & Blumwald, E. (2011) · The Plant Cell · doi:10.1105/tpc.111.089581 · Cited by 470
Regulation and Isoform Function of the V-ATPases
Toei, M., Saum, R., & Forgac, M. (2010) · Biochemistry · doi:10.1021/bi100397s · Cited by 391
High-affinity potassium and sodium transport systems in plants
Rodríguez-Navarro, A., & Rubio, F. (2006) · Journal of Experimental Botany · doi:10.1093/jxb/erj068 · Cited by 359
Bassil, E., Coku, A., & Blumwald, E. (2012) · Journal of Experimental Botany · doi:10.1093/jxb/ers250 · Cited by 310
Vacuolar and plasma membrane proton pumps collaborate to achieve cytosolic pH homeostasis in yeast
Martínez-Muñoz, G. A., & Kane, P. (2008) · Journal of Biological Chemistry · doi:10.1074/jbc.m710470200 · Cited by 257
Metadata
- Authors
- Brett, C. L., Tukaye, D. N., Mukherjee, S., & Rao, R.
- Venue
- Molecular Biology of the Cell
- Published
- 2005-03
- Volume
- 16
- Issue
- 3
- Pages
- 1396-1405
- ISSN
- 1059-1524 (ISSN-L)
- 1939-4586
- OpenAlex
- W2124804313
- Cited by
- 294
- References
- 48
- FWCI
- 5.81
- Type
- journal article
- Language
- en
- Open access
- green
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- Brett, C. L., Tukaye, D. N., Mukherjee, S., & Rao, R. (2005). The Yeast Endosomal Na + (K + )/H + Exchanger Nhx1 Regulates Cellular pH to Control Vesicle Trafficking. Molecular Biology of the Cell. https://doi.org/10.1091/mbc.e04-11-0999
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