... with an increase in intracellular pH, an increase in intracellular calcium and phosphorylation of different proteins. This process is also accompanied by the hyperpolarization of the sperm plasma membrane potential. Recently, we presented evidence showing that epithelial Na + channels (ENaC) are present in mature...

...Susan Chalmers; John G. McCarron Ca 2+ uptake by mitochondria might both modulate the cytosolic Ca 2+ concentration ([Ca 2+ ] c ) and depolarize the mitochondrial membrane potential (ΔΨ m ) to limit ATP production. To investigate how physiological Ca 2+ signaling might affect energy production, ΔΨ...

... in both yeast ( Panic et al., 2003 ; Setty et al., 2003 ) and mammalian cells ( Lu and Hong, 2003 ). However, in this study, we demonstrate an unprecedented role for this guanine nucleotide-binding protein in K + homeostasis. Generation and maintenance of membrane potential are critical for all...

...Jennifer L. Bankers-Fulbright; Gerald J. Gleich; Gail M. Kephart; Hirohito Kita; Scott M. O'Grady Protein kinase C (PKC) activation in human eosinophils increases NADPH oxidase activity, which is associated with plasma membrane depolarization. In this study, membrane potential measurements...