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Adenosine deaminase (ADA) was partially purified 486- and 994- -fold from rat liver mitochondria and cytosol, respectively. Relative molecular mass of the enzymes from both fractions was 34 (KM). Km for adenosine and 2'-deoxy-adenosine were 3.08 x 10~5 M and 3.03 x 10 ~5 M for mitochondrial ADA and 3.12 x 10"5 M and 2.87 x 10~5 M for cytosolic ADA. The enzyme from both subcellular fractions had...