ArticleJournal of muscle research and cell motility1992
Expression of myosin heavy and light chains and phosphorylation of the phosphorylatable myosin light chain in the heart ventricle of the European hamster during hibernation and in summer.
Article in Journal of muscle research and cell motility, 1992. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 4 papers.
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4 citing papers in PubMed, 32 citations in OpenAlex.
- Cardiac myosin light chain is phosphorylated by Ca2+/calmodulin-dependent and -independent kinase activities.Proceedings of the National Academy of Sciences of the United States of America · 2016Article
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- Increase in cardiac myosin heavy-chain (MyHC) alpha protein isoform in hibernating ground squirrels, with echocardiographic visualization of ventricular wall hypertrophy and prolonged contraction.The Journal of experimental biology · 2013Article
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4 authors at 2 institutions in 1 country.
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Abstract
We investigated the expression of myosin subunits (myosin heavy chains) as well as light chains and the in vivo phosphorylation of the phosphorylatable myosin light chain in the heart ventricle of the adult male European hamster (Cricetus cricetus L.). Two myosin heavy chain isoenzymes could be detected under native and denaturing electrophoretic conditions having high (alpha-myosin heavy chain) and low (beta-myosin heavy chain) enzymatic activity. Enzymatic activity of alpha- and beta-myosin heavy chain revealed a different temperature dependency. When temperature increased ATPase activity of the alpha-myosin heavy chain isoenzyme increased relatively more than ATPase activity of the beta-myosin heavy chain isoenzyme. Summer animals expressed predominantly the beta-myosin heavy chain (79% of total myosin) while during hibernation the alpha-myosin heavy chain expression increased to 53% of total myosin. Winter-active hamsters kept at 22 degrees C and 12 h day/night rhythm showed the same myosin heavy chain isoenzyme pattern as summer-active animals. Two myosin light chain forms were expressed in the ventricle of all animal groups. The in vivo phosphorylation level of the phosphorylatable myosin light chain decreased from 45% in summer-active hamster to 23% during hibernation.
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