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Eur Cytokine Netw. 2000 Mar;11(1):27-38.

The importance of shedding of membrane proteins for cytokine biology.

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I. Medical Clinic, Section Pathophysiology, Johannes Gutenberg-Universität Mainz, Obere Zahlbacher Strasse 63, D-55101 Mainz, Germany.


Most transmembrane proteins are subjected to limited proteolysis by cellular proteases. The recent molecular cloning of the TNF-a converting enzyme (TACE) revealed that this shedding enzyme belongs to a family of metalloproteinases which contain a disintegrin domain (ADAM family). The activity of these proteases seems to be tightly regulated. Mice lacking functional TACE are not viable demonstrating the importance of this enzyme for body homeostasis. This review describes the current knowledge of shedding enzymes, the ADAM protein family, the mechanism of shedding as well as physiological consequences of shedding of cytokines and cytokine receptors for cytokine biology.

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