Related Experiment Video
Updated: Aug 30, 2026

One-step Extraction and Zymographic Analysis of Bacterial Gelatinases
Published on: August 1, 2025
Enzyme-catalyzed gel proteolysis: an anomalous diffusion-controlled mechanism
1Laboratoire Léon Brillouin, Commissariat à l'Energie Atomique/Saclay, Gif-sur-Yvette, France.
Abstract:
Enzyme-catalyzed proteolysis of gelatin gels has been studied. We report a gel degradation rate varying as the square of the enzyme concentration. The diffusion motion of enzymes in the gel has been measured by two-photon fluorescence correlation spectroscopy and identified as being anomalously slow. These experimental results are discussed from a theoretical point of view and interpreted in terms of a diffusion-controlled mechanism for the gel degradation. These results make a step toward the understanding of enzyme-catalyzed gel degradation and give new insight on biological processes such as the action of metalloproteinases in the extracellular matrix involved in cellular invasion.
Related Concept Videos
Introduction to Mechanisms of Enzyme Catalysis
Actin Filament Depolymerization
In F-actin, the ADF/cofilin proteins...
Catalytically Perfect Enzymes
Enzymes
Enzyme deficiencies can often translate into life-threatening diseases. For example, a genetic abnormality resulting in the deficiency of the enzyme G6PD...
Protein Diffusion in the Membrane
SDS-PAGE
A variation of gel electrophoresis, termed polyacrylamide gel electrophoresis (PAGE), is commonly used for separating proteins according to their molecular size by passing them through a polyacrylamide gel. Because of the varying charges associated with amino acid side chains, PAGE can be used to separate intact proteins...

