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© Research
Publication : Journal of molecular biology

Myotube-specific activity of the human aldolase A M-promoter requires an overlapping binding site for NF1 and MEF2 factors in addition to a binding site (M1) for unknown proteins

Scientific Fields
Diseases
Organisms
Applications
Technique

Published in Journal of molecular biology - 13 Oct 1995

Salminen M, Spitz F, Fiszman MY, Demignon J, Kahn A, Daegelen D, Maire P

Link to Pubmed [PMID] – 7473711

J. Mol. Biol. 1995 Oct;253(1):17-31

The human aldolase A gene is expressed in several tissues through the use of three alternative promoters. The activity of one of the promoters, pM, is restricted to skeletal muscle. We reported previously that a proximal 280 bp pM fragment confers tissue-specific expression to a CAT reporter gene in transgenic mice. This small regulatory region directs expression to muscle composed mainly of fast-twitch fibers. Here we show that a minimal promoter fragment from base-pairs -164 to +45 is sufficient to highly active pM during myoblast differentiation in cell culture and demonstrate that two DNA elements play a major role in this activation. These elements consist of a binding site (M1) for unknown ubiquitous proteins and an overlapping binding site for MEF2 and NF1 families of transcription factors. The NF1 factor constitute the main binding activity on the MEF2/NF1 site and, interestingly, some of the DNA-protein complexes that form with muscle nuclear extracts on the NF1 element differ from those that form with non-muscular extracts.

http://www.ncbi.nlm.nih.gov/pubmed/7473711