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Cell Mol Life Sci. 2007 Aug;64(15):1997-2005.

COMMD proteins: COMMing to the scene.

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  • 1Department of Internal Medicine, Biomedical Science Research Building Rm 1526, University of Michigan Medical School, Ann Arbor, Michigan 48109, USA.


COMM Domain-containing or COMMD proteins are a recently discovered group of factors defined by the presence of a unique motif in their extreme carboxy termini (Copper metabolism MURR1, or COMM domain). This protein family is comprised of ten members which are widely conserved throughout evolution and share certain functional properties. At the present time, a number of seemingly discrete functions have been ascribed to these factors. These include the regulation of such events as the activity of the transcription factor NF-kappaB, copper homeostasis, the function of the epithelial sodium channel, and cell proliferation. A unifying mechanism that would explain all these events is lacking at the moment, but recent studies suggest that regulation of the ubiquitin pathway may be the basis of many of the functions of the COMMD protein family.

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