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

Separation of rat muscle aminopeptidases.

By means of chromatography on DEAE-Sephadex, two arylamidases (hydrolysing L-arginine 2-naphthylamide) and three dipeptidyl peptidases (hydrolysing dipeptide 2-naphthylamides) were distinguished in extracts of rat muscle. However, the arylamidase from the larger peak also hydrolysed the dipeptide 2-naphthylamides. Glycyl-L-arginine amide, an alternative substrate for dipeptidyl peptidase I, was not hydrolysed by arylamidase. L-Leucine amide was hydrolysed by an enzyme, presumed to be leucine aminopeptidase, from a separate peak, but was also hydrolysed by arylamidase. Arylamidase, dipeptidyl peptidase III and most of the leucine aminopeptidase could be extracted from the muscle with a neutral salt solution, but dipeptidyl peptidase I was extracted only in the presence of Triton X-100; dipeptidyl peptidase II showed an intermediate extraction behaviour.[1]


  1. Separation of rat muscle aminopeptidases. Parsons, M.E., Pennington, R.J. Biochem. J. (1976) [Pubmed]
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