Lithium Ion is a Competitive Inhibitor of the Na+ Selective Na+/H+ Antiporter from Mitochondria
The existence of an inner membrane Na+/H+ antiporter in mitochondria was predicted by Peter Mitchell (1961) and later demonstrated experimentally by Mitchell and Moyle (1967; 1969). These and subsequent studies by Douglas and Cockrell (1974) and Brierley (1976) led to the conclusions that mitochondria possess one Na+/H+ antiporter and that this porter also catalyzes K+/H+ exchange at a much lower rate. Indeed K+/H+ exchange was so low that some workers (Rosen and Futai, 1980) concluded that mitochondria do not possess such activity.
KeywordsMillipore Filtration Double Reciprocal Plot Transport Site Acetate Salt Light Scattering Technique
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