Related Experiment Video
Updated: Aug 12, 2026

In Vitro Enzyme Measurement to Test Pharmacological Chaperone Responsiveness in Fabry and Pompe Disease
Published on: December 20, 2017
Regulation of the GM1-galactosidase supramolecular structure and catalytic activity in vitro
A V Pshezhetsky1, A V Levashov, Wiederschain GYa
1Belozersky Institute of Physico-Chemical Biology, Moscow State University, Russia.
Abstract:
Regulation of the supramolecular organization and the catalytic activity of GM1-galactosidase (EC 3.2.1.23) and neuraminidase (EC 3.2.1.18) from human kidney was studied in a system of hydrated reversed micelles of Aerosol OT in octane. It was shown that both the catalytic activity and the oligomeric structure of the GM1-galactosidase in reversed micelles depend on the [H2O]/[Aerosol OT] molar ratio (w(o)). GM1-galactosidase 64-67 kDa monomers, 260 kDa tetramers, and 660 kDa octamers were obtained in systems with w(o) = 0-20, 25-30 and 30-40, respectively. The association of GM1-galactosidase monomers into an octamer results in the cooperative increase in enzymatic activity. 'Protective protein', a component of the GM1-galactosidase-neuraminidase native complex, was found to improve this association significantly.
More Related Videos
13:35Structural Biology and Analytical Chemistry Approaches for Characterizing C-Glycoside Metabolic Enzymes in Human Gut Microbiota
Published on: May 23, 2025
11:57Saccharomyces cerevisiae Models of Alzheimer's Disease to Screen Genes, Mutations, and Chemicals Affecting Amyloid Beta Production by γ-Secretase
Published on: June 24, 2025
Related Concept Videos
Enzyme Inhibition
Ligand Binding and Linkage
GTPases and their Regulation
Large G-proteins, also known...
Activation and Inactivation of G Proteins