... electrogenic electrophoretic protonmotive force electrochemical potential “The obscure we see eventually, the completely apparent takes longer.” Peter Mitchell, Nobel Lecture, 1978 Peter Mitchell introduced the hypothesis that the proton electrochemical potential difference (pmf...

... the missing NHEs. We review published evidence in support of this hypothesis and speculate about broader functions of NHE VNAT s. electrogenic electrophoretic KAAT1 CAATCH1 Ae AAT1i Ag NAT8 This work was supported in part by Research Grants AI-52436 and AI-30464 from NIH and by funds from...

... controlling Ca 2+ entry into hepatopancreatic epithelial cells include a previously reported electrogenic 2Na + /1H + antiporter, an electroneutral 2Na + /1Ca 2+ antiporter and a verapamil-sensitive Ca 2+ channel, which might also be used for the entry of Zn 2+ and possibly other heavy metals. Evidence from...

...G. A. Ahearn; Z. Zhuang; J. Duerr; V. Pennington ABSTRACT In recent years, an electrogenic 2Na + /1H + antiporter has been identified in a variety of invertebrate epithelial brush-border membranes of gut, kidney and gill tissues. The antiporter differs significantly in its physiological properties...

... with those of an apparently unique recently described crustacean electrogenic antiporter. In starfish BBMV 22 Na uptake was markedly enhanced by an outwardly directed pH gradient and membrane potential (inside negative) compared to control short-circuited vesicles. External amiloride abolished...