Journal
BIOCHEMICAL AND BIOPHYSICAL RESEARCH COMMUNICATIONS
Volume 285, Issue 2, Pages 378-386Publisher
ACADEMIC PRESS INC ELSEVIER SCIENCE
DOI: 10.1006/bbrc.2001.5131
Keywords
muscle proteins; muscle plasticity; hypertrophy; ankyrin; signaling pathways
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Funding
- Telethon [1023] Funding Source: Medline
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Human Ankrd2 transcript encodes a 37-kDa protein that is similar to mouse Ankrd2 recently shown to be involved in hypertrophy of skeletal muscle. These novel ankyrin-rich proteins are related to C-193/CARP/MARP, a cardiac protein involved in the control of cardiac hypertrophy. A human genomic region of 14,300 bp was sequenced revealing a gene organization similar to mouse Ankrd2 with nine exons, four of which encode ankyrin repeats. The intracellular localization of Ankrd2 was unknown since no protein studies had been reported. In this paper we studied the intracellular localization of the protein and its expression on differentiation using polyclonal and monoclonal antibodies produced to human Ankrd2. In adult skeletal muscle Ankrd2 is found in slow fibers; however, not all of the slow fibers express Ankrd2 at the same level. This is particularly evident in dystrophic muscles, where the expression of Ankrd2 in slow fibers seems to be severely reduced. (C) 2001 Academic Press.
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