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**Excess E-P capacity**

## Description

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.

**Abbreviation:** *ExP*

**Reference:** Gnaiger 2014 MitoPathways

**MitoPedia concepts:**
Respiratory state,
Recommended

**MitoPedia topics:**
EAGLE

Communicated by Gnaiger E 2010-08-17, edited 2015-01-18.

## Related terms in Bioblast

OXPHOS, *P*

ROUTINE, *R*

ETS, *E*

LEAK, *L*

ROX, *R*

- Free OXPHOS capacity,
*≈P*=*P-L* - Free ROUTINE activity,
*≈R*=*R-L* - Free ETS capacity,
*≈E*=*E-L* -
**Excess**,*E-P*capacity*ExP*=*E-P* - Excess
*E-R*capacity,*ExR*=*E-R*