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Hoffmann, R. A wiki for the life sciences where authorship matters. Nature Genetics (2008)

Renal glycerol metabolism and the distribution of glycerol kinase in rabbit nephron.

Glycerol and dihydroxyacetone are metabolized by rabbit kidney-cortex tubules, isolated by collagenase treatment. Half-maximal concentrations of both substrates were determined with regard to uptake rates and product formations. Maximal uptake rates were 643 and 329 mumol/h per g of protein for dihydroxyacetone and glycerol respectively. Glucose and lactate were found as major metabolic products. Glycerol kinase, the enzyme catalysing the first step in renal glycerol and dihydroxyacetone metabolism, was measured radiochemically as described by Newsholme, Robinson & Taylor [(1967) Biochim, Biophys. Acta 132, 338-346] and adapted for studies of the localization of this enzyme along the different structures of rabbit nephron. The results show that glycerol kinase is located exclusively in the proximal segments, i.e. the proximal convoluted tubules and the pars recta, but is negligible in the other structures studied. The activities were close to the maximal dihydroxyacetone uptake rates measured in tubule suspensions.[1]


  1. Renal glycerol metabolism and the distribution of glycerol kinase in rabbit nephron. Wirthensohn, G., Vandewalle, A., Guder, W.G. Biochem. J. (1981) [Pubmed]
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