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Updated: Jul 29, 2026
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Analysis of β-Amyloid-induced Abnormalities on Fibrin Clot Structure by Spectroscopy and Scanning Electron Microscopy
Published on: November 30, 2018
An electron-microscope study of beta-glucuronidase crystals
The Biochemical Journal
|July 1, 1979
Summary
Crystallized beta-glucuronidase from rat preputial glands revealed a p6 symmetry. Analysis suggests a tetrahedral arrangement of its four subunits, offering insights into enzyme structure.
Area of Science:
- Biochemistry
- Structural Biology
- Enzymology
Background:
- Beta-glucuronidase is a key enzyme involved in various biological processes.
- Understanding the quaternary structure of beta-glucuronidase is crucial for elucidating its function.
Purpose of the Study:
- To determine the three-dimensional structure of beta-glucuronidase from rat preputial glands.
- To investigate the arrangement of subunits within the beta-glucuronidase molecule.
Main Methods:
- Crystallization of beta-glucuronidase.
- Image processing using Fourier methods.
- Analysis of projected symmetry and molecular outline.
Main Results:
- Beta-glucuronidase was crystallized into thin sheets with p6 symmetry in projection (a = 20.2 nm).
- Filtered images achieved a resolution of 2.2 nm.
- The molecular projection exhibited an approximately triangular outline.
Conclusions:
- The observed triangular projection suggests a tetrahedral arrangement of the four subunits.
- This finding provides a structural model for the beta-glucuronidase enzyme.
