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A wasp head with a relaxing bite

¹Laboratory of Molecular Biophysics, University of Oxford, UK.

Structure (London, England : 1993)

|February 15, 1996

Summary

This summary is machine-generated.

The crystal structure of yeast type II topoisomerase shows a toroidal shape. This structure, with its central cavity, likely facilitates DNA movement during its catalytic function.

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Area of Science:

Biochemistry
Structural Biology
Molecular Biology

Background:

Yeast type II topoisomerase is crucial for managing DNA topology.
Understanding its structure is key to elucidating DNA processing mechanisms.

Purpose of the Study:

To determine the crystal structure of a key fragment of yeast type II topoisomerase.
To investigate the structural basis for DNA duplex translocation during catalysis.

Main Methods:

X-ray crystallography was used to resolve the structure of a 92 kDa fragment.
Structural analysis was performed to identify key features and potential functional sites.

Main Results:

A toroidal structure was revealed for the 92 kDa fragment.

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A large central cavity was identified within the toroidal structure.

This cavity is proposed to be the site for DNA duplex translocation.

Conclusions:

The determined structure provides insights into the mechanism of yeast type II topoisomerase.
The toroidal fold and central cavity are likely essential for enzyme function in DNA management.