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Revisiting Ubiquity and Tissue Specificity of Human Calpains

  • A. Farkas , P. Tompa and P. Friedrich
Published/Copyright: June 1, 2005
Biological Chemistry
From the journal Volume 384 Issue 6

Abstract

The abundance of mRNAs transcribed from human genes of the calpain superfamily was studied in 72 human tissues and cell types by the Human Multiple Tissue Expression (MTE™) Array technique. The analysis included the large subunits of u- and m-calpains, the small subunits, calpastatin and calpain 3 (p94). Besides specific data on transcriptional activity, two major conclusions emerged: (i) ubiquitous calpains are not expressed in all cell types, and (ii) a 'tissue-specific' calpain may be expressed in many cell types apart from the one in which it is particularly abundant. Therefore, the categoric classification of ubiquitous vs. 'tissue-specific' calpains is a simplification.

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Published Online: 2005-06-01
Published in Print: 2003-06-16

Copyright © 2003 by Walter de Gruyter GmbH & Co. KG

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