Volume 4, Issue 1 pp. 3-12
Review
Free Access

Interleukin-1βconverting enzyme: A novel cysteine protease required for IL-1β production and implicated in programmed cell death

Nancy A. Thornberry

Corresponding Author

Nancy A. Thornberry

Department of Enzymology, Merck Research Laboratories, Rahway, New Jersey 07065

Merck Research Labo-ratories, R80W-243, P.O. Box 2000, Rahway, New Jersey 07065Search for more papers by this author
Susan M. Molineaux

Susan M. Molineaux

Department of Molecular Immunology, Merck Research Laboratories, Rahway, New Jersey 07065

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First published: January 1995
Citations: 138

Abstract

Interleukin-1β converting enzyme is the first member of a new class of cysteine proteases. The most distinguishing feature of this family is a nearly absolute specificity for cleavage at aspartic acid. This enzyme has been the subject of intense research because of its role in the production of IL-1β, a key mediator of inflammation. These studies have culminated in the design of potent inhibitors and determination of its crystal structure. The structure secures the relationship of the enzyme to CED-3, the product of a gene required for programmed cell death in Caenorhabditis elegans, suggesting that members of this family function in cell death in vertebrates.

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