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Plant Physiology 91:213-216 (1989)
© 1989 American Society of Plant Biologists

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Membranes and Bioenergetics

Calcium Activates an Electrogenic Proton Pump in Neurospora Plasma Membrane 1

Roger R. Lew2

Department of Cellular and Molecular Physiology, Yale University School of Medicine, New Haven, Connecticut 06510

Calcium ionophoresis into coenocytic cells of Neurospora crassa activates the plasma membrane proton pump as measured by current-voltage analysis. This is direct evidence that intracellular calcium regulates the activity of a key transport enzyme found in higher plants and fungi.

2 Present address: York University, Department of Biology, 4700 Keele St., North York, Ontario, Canada M3J 1P3.

1 Supported by National Institutes of Health training grant DK-7259 to Professor E. Boulpaep, and U.S. Department of Energy grant DE-FG02-85ER 13359 to Professor C. L. Slayman.




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Phenotype of a Mechanosensitive Channel Mutant, mid-1, in a Filamentous Fungus, Neurospora crassa
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Role of a Mitogen-Activated Protein Kinase Cascade in Ion Flux-Mediated Turgor Regulation in Fungi
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R. R. Lew
Mass flow and pressure-driven hyphal extension in Neurospora crassa
Microbiology, August 1, 2005; 151(8): 2685 - 2692.
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N. Levina, R. Lew, G. Hyde, and I. Heath
The roles of Ca2+ and plasma membrane ion channels in hyphal tip growth of Neurospora crassa
J. Cell Sci., January 11, 1995; 108(11): 3405 - 3417.
[Abstract] [PDF]


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