A continuous fluorimetric assay for clostridial collagenase and Pz-peptidase activity.
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ABSTRACT: The peptide derivative N alpha-(2,4-dinitrophenyl)-L-prolyl-L-leucyl-glycyl-L-prolyl-L-tryptophanyl-D- lysine (Dnp-Pro-Leu-Gly-Pro-Trp-D-Lys) has been found to be a convenient substrate for the assay of clostridial collagenase and Pz-peptidase. The substrate shows a 25-fold enhancement of fluorescence (gamma ex. 283 nm, lambda em. 350 nm) following hydrolysis of the Leu2-Gly3 peptide bond. The value of Km for clostridial collagenase was 17 microM. The substrate for the first time makes possible continuous fluorimetric assays for Pz-peptidase and clostridial collagenase.
SUBMITTER: Barrett AJ
PROVIDER: S-EPMC1138654 | biostudies-other | 1989 May
REPOSITORIES: biostudies-other
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