A New Look at Mechanisms in Bioenergetics by Efraim Racker

By Efraim Racker

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You may wonder why and the answer is simple: Because Britton Chance said so. A few years back one of my graduate students, Peter Hinkle, made some observations which were incompatible with this view. My first attempt to convince Dr. Chance of the new location of site 1 phosphorylation by telephone was not successful. Peter Hinkle and I therefore traveled to Philadelphia and, after receiving various psychological and electrical shocks in the dark laboratory of Dr. Chance, further experimentations brought additional evidence in favor of the location of site 1 phosphorylation between the flavoprotein and Q 1 0 .

It is curious though, how little attention was paid to Mitchell's hypothesis of 1961 when he proposed it in terms of basic principles, which are as good today as they were in 1961. It is only when in 1966 Mitchell included detailed Mechanism of Phosphorylation Coupled to Electron Transport 57 features that could be attacked that his hypothesis was widely reviewed. Lesson 9: If you propose a brilliant, new hypothesis and avoid being specific, you probably will be ignored. If you want attention be sure to include a few features that are not essential for the main theme, but open to attack.

In the last Table (1-7) I have assembled the experimental evidence in favor of the Tagfy philosophy. One of the most difficult problems working with membranes is the close association of its components with phospholipid and with other proteins. This makes separation difficult and requires a cautious approach to resolution and fractionation. On the other hand, once we can devise a mild procedure, which preserves the reconstitutive properties of the component, reassembly is simple and rapid. The difficulties encountered with the assay of F !

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