PPi concentration in Bintje tubers

Range ≤16.8 μM
Organism Potato Solanum tuberosum
Reference Claassen PA, Budde MA, de Ruyter HJ, van Calker MH, van Es A. Potential Role of Pyrophosphate:Fructose 6-Phosphate Phosphotransferase in Carbohydrate Metabolism of Cold Stored Tubers of Solanum tuberosum cv Bintje. Plant Physiol. 1991 Apr95(4):1243-9. p.1248 left column 2nd paragraphPubMed ID16668118
Method For sugar and PPi determination, 2.5 and 20 g, respectively, of lyophilized powder was extracted with boiling 80% (v/v) aqueous methanol during 1 h.
Comments The highest calculated PPi concentration in Bintje tubers was 16.8µM. This amount is nowhere near the concentration needed for inhibition of PFP but quite close to reported Km values (refs 25, 27).
Entered by Uri M
ID 108181