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Related Concept Videos

The Proteasome01:13

The Proteasome

830
Eukaryotic cells can degrade proteins through several pathways. One of the most important among these is the ubiquitin-proteasome pathway. It helps the cell eliminate the misfolded, damaged, or unwarranted cytoplasmic proteins in a highly specific manner.
In this pathway, the target proteins are first tagged with small proteins called ubiquitin. This involves participation of a series of enzymes including— E1 (ubiquitin-activating enzyme), E2 (ubiquitin-conjugating enzyme), and E3...
830

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Related Experiment Video

Updated: Jun 28, 2025

Author Spotlight: Engineering Molecular Tools for Disease Detection and Imaging
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Author Spotlight: Engineering Molecular Tools for Disease Detection and Imaging

Published on: December 8, 2023

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Synthetic protein protease sensor platform.

Ciaran Devoy1, Yensi Flores Bueso1,2, Stephen Buckley1

  • 1Cancer Research@UCC, University College Cork, Cork, Ireland.

Frontiers in Bioengineering and Biotechnology
|April 22, 2024
PubMed
Summary
This summary is machine-generated.

Researchers developed a synthetic protein platform for rapid, cell-free protease detection. This modular sensor uses a novel ELISA for highly sensitive protease activity measurement, applicable in health and biotech.

Keywords:
MMP9 and TEVMpro proteasediagnosticprotease activitysandwich ELISAsynthetic biology

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Area of Science:

  • Biochemistry
  • Molecular Biology
  • Biotechnology

Background:

  • Protease activity is a crucial biomarker in health and biotechnology.
  • Existing methods for protease detection can be limited in speed and setting.
  • A need exists for rapid, cell-free systems to monitor protease activity.

Purpose of the Study:

  • To develop a versatile, synthetic protein platform for detecting protease activity.
  • To enable rapid, cell-free detection of specific protease activity.
  • To validate the platform using diverse proteases relevant to human disease and agriculture.

Main Methods:

  • Designed a modular synthetic protein sensor with N- and C-terminal tags flanking a protease-cleavable site.
  • Utilized Green fluorescent protein (GFP) as a backbone, incorporating HIS and Flag tags.
  • Developed a sensitive sandwich Enzyme-Linked Immunosorbent Assay (ELISA) for tag detection and validated with Western blots and fluorescence assays.

Main Results:

  • Successfully demonstrated specific protease cleavage of the synthetic protein constructs.
  • The developed ELISA method provided highly sensitive detection of protease activity for tested proteases (TEV, Mpro, MMP9).
  • Fluorescence-based readout confirmed cleavage but lacked the sensitivity of the ELISA method.

Conclusions:

  • The developed protease-responsive synthetic protein platform is effective for sensitive protease detection.
  • The modular design allows adaptation for various protease cleavage sites and applications.
  • The platform shows promise for rapid, low-cost, lateral flow assay development in diverse fields.