Actomyosin is a protein complex composed of actin and myosin. It is found in muscle fibers where it plays a role in muscle contraction. Actin is one of the most abundant proteins in eukaryotes. It ...

The basic functional unit of a muscle, known as the sarcomere, consists of actin, myosin and tropomyosin proteins. If a muscle is to be able to contract, the myosin must slide along filamentous actin ...

At the molecular level, muscle contraction is defined by myosin molecules pulling actin filaments. New electron cryomicroscopy images with unprecedented resolution taken by researchers at Osaka ...

Electron microscope examination of myosin-extracted psoas muscle of the rabbit reveals a number of thin filaments, about 25 Å in diameter, bridging the gap between the ends of the actins and the ...

Why can some people run so much faster than others? A tissue sample from the world record holder could enable researchers from the Max Planck Institute in Dortmund to answer this question. Stefan ...

"If actin is blocked, transcription can't begin," de Lanerolle said. The finding is published in the current issue of Nature Cell Biology and follows an earlier discovery by de Lanerolle and his ...

Mutations in β-cardiac myosin, the predominant motor protein for human heart contraction, can alter power output and cause cardiomyopathy. However, measurements of the intrinsic force, velocity, and ...

Atomic images of muscle molecules in action have now been captured by researchers, giving possibility of new nanomachines. At the molecular level, muscle contraction is defined by myosin molecules ...