Abstract
Analysis of myosin light chain kinase (MLCK) activity in tibialis anterior muscles of the rabbit revealed that chronic stimulation at a frequency of 10 Hz for 24 h per day reduced the enzyme activity in a timedependent manner. Since fast twitch muscle contains significantly more myosin light chain kinase than slow twitch muscle, the observed reductions are consistent with the type of fast-to-slow transformation observed for other type-specific muscle characteristics. The present data also indicate that the stimulation-induced decrease in MLCK activity precedes the fast-to-slow conversion of the myosin molecule as judged by pyrophosphate-polyacrylamide gel electrophoresis.
Original language | English (US) |
---|---|
Pages (from-to) | 352-354 |
Number of pages | 3 |
Journal | FEBS Letters |
Volume | 200 |
Issue number | 2 |
DOIs | |
State | Published - May 12 1986 |
Keywords
- (Skeletal muscle)
- Chronic stimulation
- Fast-to-slow conversion
- Isomyosin
- Myosin light chain kinase
ASJC Scopus subject areas
- Biophysics
- Structural Biology
- Biochemistry
- Molecular Biology
- Genetics
- Cell Biology