Abstract
It has been shown that the viscosity of the lipid phase of the inner mitochondrial membrane can cause a switch from ATP-producing phosphorylation to pyrophosphate-producing phosphorylation. Thereby the more “rigid” membrane is more capable of synthesizing pyrophosphate, and the more “fluid” one of synthesizing ATP. In the course of evolution biomembranes became more fluid and this, as the authors believe, assisted in the transition from phosphorylation with pyrophosphate formation in ancient organisms to phosphorylation with ATP formation in contemporary ones.
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