Evolution of Hidden Core Machinery Unveiled
A new study reveals that the core muscle proteins myosin and actin are more variable across vertebrate species than previously thought. Researchers identified 50 gene subfamilies that explain how these proteins adapt to specific physiological needs in different animals.
Why it matters
This discovery challenges the long-held scientific assumption that muscle machinery is constant across vertebrates, potentially reshaping our understanding of evolutionary biology.
Within every muscle of every living species with a backbone, a protein called myosin tugs on a partner protein to generate a muscle contraction. This function, discovered in mammals a century ago, has been presumed by scientists to be operating in the same way among birds, reptiles, amphibians and fish.
The article reports on scientific research findings without any political or social bias.
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