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Rat myogenic c-mos cDNA: cloning sequence analysis and regulation during muscle development
S A Leibovitch1, J L Lenormand, M P Leibovitch
1Laboratoire d'Oncologie Moléculaire, UA 1158, URA 126 du CNRS, Institut Gustave Roussy, Villejuif, France.
Oncogene
|August 1, 1990
Summary
Researchers identified a rat skeletal muscle c-mos gene cDNA clone. This clone codes for a protein homologous to mos genes in other species and shows differential regulation during muscle development.
Area of Science:
- Molecular Biology
- Genetics
- Biochemistry
Background:
- The mos proto-oncogene plays a role in cellular regulation.
- Understanding mos gene expression in different tissues is crucial for comprehending its biological functions.
Purpose of the Study:
- To isolate and characterize the rat skeletal muscle c-mos gene.
- To investigate the expression patterns and protein products of the c-mos gene in rat muscles.
Main Methods:
- cDNA library screening and sequencing
- Northern blot analysis for transcript detection
- Western blot analysis for protein identification
Main Results:
- A cDNA clone homologous to rat c-mos was isolated, coding for a 339-amino acid protein.
- Two c-mos transcripts (3.6 Kb and 1.7 Kb) were detected, with differential regulation in cardiac and skeletal muscle development.
- Western blot analysis revealed two mos-related polypeptides in rat muscle (43 kDa and 75 kDa).
Conclusions:
- The rat skeletal muscle c-mos gene has been characterized at the cDNA level.
- Differential regulation of c-mos transcripts suggests tissue-specific roles during muscle development.
- The presence of distinct protein products indicates potential complex post-translational modifications or alternative splicing.