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Free Radic Biol Med. 2009 Nov 1;47(9):1239-53. doi: 10.1016/j.freeradbiomed.2009.07.023. Epub 2009 Jul 21.

Nox proteins in signal transduction.

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1
Department of Medicine, Division of Cardiology, Emory University, 1639 Pierce Drive, 319 WMB Atlanta, GA 30322, USA.

Abstract

The NADPH oxidase (Nox) family of superoxide (O(2)(*-)) and hydrogen peroxide (H(2)O(2))-producing proteins has emerged as an important source of reactive oxygen species (ROS) in signal transduction. ROS produced by Nox proteins Nox1-5 and Duox1/2 are now recognized to play essential roles in the physiology of the brain, the immune system, the vasculature, and the digestive tract as well as in hormone synthesis. Nox-derived ROS have been implicated in regulation of cytoskeletal remodeling, gene expression, proliferation, differentiation, migration, and cell death. These processes are tightly controlled and reversible. In this review, we will discuss recent literature on Nox protein tissue distribution, subcellular localization, activation, and the resulting signal transduction mechanisms.

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