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Department of Genetics and Genomic Sciences, Mount Sinai School of Medicine, Icahn Medical Institute, New York, NY 10029, USA. Edward.Schuchman@mssm.edu
Acid sphingomyelinase (ASM) plays an important role in normal membrane turnover through the hydrolysis of sphingomyelin, and is one of the key enzymes responsible for the production of ceramide. ASM activity is deficient in the genetic disorder Types A and B Niemann-Pick disease (NPD). ASM knockout (ASMKO) mice were originally constructed to study this disorder, and numerous defects in ceramide-related signaling have been shown. Studies in these mice have further suggested that ASM may be involved in the pathogenesis of several common diseases through the reorganization of membrane microdomains. This review will focus on the role of ASM in membrane biology, with a specific emphasis on what a rare genetic disorder (NPD) has taught us about more common events.
Copyright 2009 Federation of European Biochemical Societies. Published by Elsevier B.V. All rights reserved.
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