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Chloride-activated passive potassium transport in human erythrocytes.
Open accessAbstract
Passive K+ transport in human erythrocytes (defined as ouabain-insensitive transport) was inhibited 70% by replacement of Cl- by several permeant monovalent anions. The Vmax of Cl--dependent K+ influx was 1.14 mmol . liter-1, hr-1; its apparent Km for K+ was 4.7 mM. There was a much smaller component of Na+ influx dependent on Cl- (Vmax, 0.23 mmol . liter-1 . hr-1). Furosemide and other inhibitors of Cl- transport inhibited passive K+ transport to the same extent as replacement of Cl-, but 4-acetamido-4'-isothiocyanostilbene-2,2'-disulfonic acid, a specific inhibitor of anion exchange in erythrocytes, was ineffective. The Cl--dependent K+ transport, which may be K+/Cl- cotransport, could reflect a mechanism for regulating cell volume.
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Citations
Cited by
Physiology of cell volume regulation in vertebrates
Hoffmann, E. K., Lambert, I. H., & Pedersen, S. F. (2009) · Physiological Reviews · doi:10.1152/physrev.00037.2007 · Cited by 1,441
VRACs and other ion channels and transporters in the regulation of cell volume and beyond
Jentsch, T. J. (2016) · Nature Reviews Molecular Cell Biology · doi:10.1038/nrm.2016.29 · Cited by 353
Henquin, J. C., & Meissner, H. P. (1984) · Experientia · doi:10.1007/bf01971450 · Cited by 324
The Diversity of Volume Regulatory Mechanisms
Lang, F., Busch, G. L., & Völkl, H. (1998) · Cellular Physiology and Biochemistry · doi:10.1159/000016269 · Cited by 310
Molecular physiology of cation-coupled Cl? cotransport: the SLC12 family
Hebert, S. C., Mount, D. B., & Gamba, G. (2004) · Pfl�gers Archiv European Journal of Physiology · doi:10.1007/s00424-003-1066-3 · Cited by 295
Metadata
- Authors
- Dunham, P. B., Stewart, G. W., & Ellory, J. C.
- Venue
- Proceedings of the National Academy of Sciences
- Published
- 1980-03
- Volume
- 77
- Issue
- 3
- Pages
- 1711-1715
- ISSN
- 0027-8424 (ISSN-L)
- 1091-6490
- OpenAlex
- W2004995590
- Cited by
- 247
- References
- 0
- FWCI
- 8.89
- Type
- journal article
- Language
- en
- Open access
- green
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- CoChat. (2026). Citation check: Chloride-activated passive potassium transport in human erythrocytes. https://app.cochat.ai/papers/10.1073/pnas.77.3.1711
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- Dunham, P. B., Stewart, G. W., & Ellory, J. C. (1980). Chloride-activated passive potassium transport in human erythrocytes. Proceedings of the National Academy of Sciences. https://doi.org/10.1073/pnas.77.3.1711
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