The Na/Ca exchanger is associated with 160, 120 and 70 kDa polypeptides whose nature is poorly understood. We have purified and characterized the Na/Ca exchanger from bovine cardiac sarcolemmal vesicles (SLVs) by using ion-exchange and affinity chromatographies. The Na/Ca exchanger-enriched fraction was reconstituted into asolectin liposomes [lipid to protein ratio 10:1 (w/w)] that showed Na/Ca...

transport by the human Na ϩ /Ca 2ϩ exchanger expressed in Sf 9 cells. Am. block of the Na ϩ /Ca 2ϩ exchanger was examined in Sf 9 cells expressing the human heart Na ϩ /Ca 2ϩ exchanger (NCX1-NACA1). As predicted from the reported actions of Ni 2ϩ , its application reduced extracellular Na ϩ-dependent changes in intracellular Ca 2ϩ concentration (measured by fluo 3 fluores-cence changes). Howeve...

Cell migration is crucial for processes such as immune defense, wound healing, or the formation of tumor metastases. Typically, migrating cells are polarized within the plane of movement with lamellipodium and cell body representing the front and rear of the cell, respectively. Here, we address the question of whether this polarization also extends to the distribution of ion transporters such a...

Thin ion-selective membrane films deposited on solid electrode substrate are useful tools to study ion transfer processes. This is because the experimental conditions may be chosen such that diffusion processes within and contacting aqueous solution not rate limiting. In an ideal case, therefore, equilibrium considerations used describe resulting voltammograms. For example, electrochemical oxid...

Cl(-) and K(+) activities in the follicular lumen and the intraluminal potential of the same lumen were measured simultaneously with specific liquid ion-exchanger and 3 M KCl microelectrodes, respectively, in turtle thyroid glands. The Cl(-) equilibrium potential between the thyroid interstitium and the lumen calculated from the measured Cl(-) activities was higher than the directly measured in...

Poly-o-anisidine Sn(IV) arsenophosphate is a newly synthesized nanocomposite material and has been characterized on the basis of its chemical composition, ion exchange capacity, TGA-DTA, FTIR, X-RAY, SEM, and TEM studies. On the basis of distribution studies, the exchanger was found to be highly selective for lead that is an environmental pollutant. For the detection of lead in water a heteroge...

The present paper deals with the synthesis, ion exchange properties and analytical applications of basic lead molybdate as a new inorganic ion-exchanger. A simplified synthesis and physicochemical properties which show that the chelating resin HQCR4 in H behaves as a weak cation exchanger. The results of rate of sorption experiments reveal that the rate of sorption is high during the initial pe...

Demin water yang digunakan untuk utilitas sangat berpengaruh terhadap proses produksi karena jika terjadi kendala bahkan sampai tidak ada supply demin maka akan berhenti. Oleh itu, dalam penelitian ini dilakukan analisis lebih lanjut mengenai penyebab menjadi off spec dan cara memanfaatkan lime treated (LTW) sesuai dengan menggunakan metode perbaikan (pemanfaatan kembali) air melakukan deminera...