Issue 3, 2016

Eliminating caspase-7 and cathepsin B cross-reactivity on fluorogenic caspase-3 substrates

Abstract

11 FRET-based fluorogenic substrates were constructed using the pentapeptide template Asp-Glu-X2-Asp-X1′, and evaluated with caspase-3, caspase-7 and cathepsin B. The sequence Asp-Glu-Pro-Asp-Ser was able to selectively quantify caspase-3 activity in vitro without notable caspase-7 and cathepsin B cross-reactivity, while exhibiting low μM KM values and good catalytic efficiencies (7.0–16.9 μM−1 min−1).

Graphical abstract: Eliminating caspase-7 and cathepsin B cross-reactivity on fluorogenic caspase-3 substrates

Supplementary files

Article information

Article type
Communication
Submitted
30 okt 2015
Accepted
07 dec 2015
First published
08 dec 2015
This article is Open Access
Creative Commons BY license

Mol. BioSyst., 2016,12, 693-696

Author version available

Eliminating caspase-7 and cathepsin B cross-reactivity on fluorogenic caspase-3 substrates

M. Mackay, A. M. Pérez-López, M. Bradley and A. Lilienkampf, Mol. BioSyst., 2016, 12, 693 DOI: 10.1039/C5MB00730E

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