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Evolutionarily conserved promoter motifs and enhancer organization in the mouse gene encoding the IIB myosin heavy chain isoform expressed in adult fast skeletal muscle



Evolutionarily conserved promoter motifs and enhancer organization in the mouse gene encoding the IIB myosin heavy chain isoform expressed in adult fast skeletal muscle



Comptes Rendus de L'academie des Sciences. Serie Iii, Sciences de la Vie 315(12): 467-472



We have isolated the mouse gene for the MHC isoform expressed in adult type IIB (fast-contracting, glycolytic) skeletal muscle fibers, and determined the DNA sequence of the promoter region. This sequence represents the first example of a promoter for a gene encoding an adult-specific isoform of a mammalian skeletal MHC. The proximal 200 bp of the promoter contains several sequence motifs which are identical or very simliar to homologous motifs found in the promoters of a family of chicken skeletal MHC genes. Of these, two novel AT-rich sequences may be important for regulation of the promoter. A second feature of the mouse IIB MHC promoter sequence concerns a number of sequence motifs located at ca. -1,000 bp which are organized in a similar fashion in the IIB MHC promoter and a homologous region of promoter of the mouse muscle creatine kinase gene.

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Accession: 008646817

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PMID: 1297523


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