Document Type

Article

Publication Date

2006

Publication Title

Molecular Biosystems

Abstract

Lon protease, also known as protease La, is one of the simplest ATP-dependent proteases that plays vital roles in maintaining cellular functions by selectively eliminating misfolded, damaged and certain short-lived regulatory proteins. Although Lon is a homo-oligomer, each subunit of Lon contains both an ATPase and a protease active site. This relatively simple architecture compared to other hetero-oligomeric ATP-dependent proteases such as the proteasome makes Lon a useful paradigm for studying the mechanism of ATP-dependent proteolysis. In this article, we survey some recent developments in the mechanistic characterization of Lon with an emphasis on the utilization of pre-steady-state enzyme kinetic techniques to determine the timing of the ATPase and peptidase activities of the enzyme.

Comments

The work described in the authors’ lab was supported by the National Institutes of Health (R01GM61095), the Basil O’Connor Scholars Award–March of Dimes and the American Heart Association To C. K. Suzuki; The National Institutes Of Health (R01GM067172) to I. Lee; and the Ohio Board of Regent as the PRI award to A. J. Berdis and I. Lee.

DOI

10.1039/B609936J

Version

Postprint

Volume

2

Issue

10

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