Efflux pump definition

In the years immediately following 1952, Ling spent much time improving the method of assaying ATP, Na efflux rates, etc., so that the definitive work bn the calculation of the energy need of the Na pump was not published until 1962. The results of the last three sets of experiments are summarized in Table 3. They show that under the specified conditions (i.e., 0°C, lAA, N2 plus NaCN) when and Na" concentration were maintained at normal levels, the minimal energy need of the Na pump is from 15 to 30 times that of the maximally available energy. 

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