PMID: 6408859Jan 1, 1983Paper

Purification of rat kidney arginases A1 and A4 and their subcellular distribution

Acta biochimica Polonica
I Skrzypek-OsieckaZofia Porembska

Abstract

Arginase A1 and arginase A4 were isolated from rat kidney. Arginase A4, which is the main form of arginase in rat kidney, was obtained at a highly purified preparation; its specific activity was 1057 mumoles ornithine . min-1 . mg-1 protein. The two forms differed in subcellular localization. Form A1 was restricted to the cytosol while form A4 occurred mainly in the mitochondrial matrix. Kidney arginases A1 and A4 were found to differ in immunological properties. Kidney arginase A1, in contrast to arginase A4, precipitated with antibodies against arginase A1 from rat liver. Arginase A1 from kidney was shown to differ from arginase A1 from the liver. The two enzymes could be distinguished by double diffusion test and immunoelectrophoresis.

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