The excess E-P capacity, ExP, is the difference of the ETS capacity and OXPHOS capacity, ExP = E-P. At ExP > 0, the capacity of the phosphorylation system exerts a limiting effect on OXPHOS capacity. In addition, ExP depends on coupling efficiency, since P approaches E at increasing uncoupling.
Reference: Gnaiger 2014 MitoPathways
MitoPedia concepts: Respiratory state
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