Assessment of Proteolysis by
Pyrylium and Other Fluorogenic Reagents.
Protein Pept Lett 2021;
28:809-816. [PMID:
33390107 PMCID:
PMC9175085 DOI:
10.2174/0929866528999201231214954]
[Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2020] [Revised: 11/04/2020] [Accepted: 11/09/2020] [Indexed: 11/22/2022]
Abstract
Aims
We aim to evaluate the potential application of amine reactive fluorogenic reagents for estimating enzymatic proteolysis.
Background
Proteolytic enzymes play important roles in regulating many physiological processes in living organisms.
Objectives
Assessment of protein degradation by using reagents for protein assay techniques.
Methods
We have assayed samples at the start and after 30-60 minutes incubation with trypsin by Chromeo P503 (Py 1 pyrylium compound) and CBQCA (3-(4-carboxybenzoyl) quinoline-2-carboxaldehyde) as amine reactive reagents and NanoOrange as non-amine reactive dye.
Results
All BSA prepared samples with trypsin have shown significantly higher fluorescence intensity (FI) versus controls (which reflects proteolysis) when assayed by Chromeo P503 (Py 1 pyrylium compound) and CBQCA (3-(4-carboxybenzoyl) quinoline-2-carboxaldehyde) as amine reactive reagents. However, same samples assayed with NanoOrange as non-amine reactive reagent did not show any significant variation between samples containing trypsin and controls.
Conclusion
These results are confirming reliability of highly sensitive protein assays utilizing amine reactive fluorogenic reagents for general estimation of proteolysis.
Collapse