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A rapid and sensitive assay for the determination of cathepsin A activity is reported. This method is based on fluorimetric detection of a dansylated peptide, 5-dimethylaminonaphthalene-1-sulfonyl-l-Phe, enzymatically formed from the substrate 5-dimethylaminonaphthalene-1-sulfonyl-l-Phe-l-Leu, after separation by high-performance liquid chromatography using a C 18 reversed-phase column...
A rapid and sensitive assay method for the determination of glycine carboxypeptidase activity has been reported. This method is based on the monitoring of the absorption at 460 nm of 4-dimethylaminoazobenzene-4 -sulfonyl-Gly-l-Phe, enzymatically formed from the substrate 4-dimethylaminoazobenzene-4 -sulfonyl-Gly-l-Phe-Gly, after separation by high-performance liquid chromatography (HPLC) using...
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