Percent of ATP produced daily spent on protein turnover

Range 22-30 %
Organism Grass Dactylis glomerata
Reference Scheurwater I, Dünnebacke M, Eising R, Lambers H. Respiratory costs and rate of protein turnover in the roots of a fast-growing (Dactylis glomerata L.) and a slow-growing (Festuca ovina L.) grass species. J Exp Bot. 2000 Jun51(347):1089-97PubMed ID10948236
Method Pulse-chase labelling with 14C-leucine was used to determine the rate of protein turnover in the grass roots.
Comments Assuming 50% recycling of 14C-leucine in both species (see below) and assuming the specific respiratory costs for protein turnover to be 148 mmol ATP g-1 protein, the respiratory costs for protein turnover were only slightly higher in the roots of the fast-growing D. glomerata compared with those in the slow-growing F. ovina roots. As this was also the case for the respiratory costs for maintenance of root biomass (Scheurwater et al., 1998), both the fast- and the slow-growing grass spent 22–30% of their daily ATP production for maintenance on protein turnover.
Entered by Uri M
ID 103662