Calcium is required by two proteins, troponin and tropomyosin, that regulate muscle contraction by blocking the binding of myosin to filamentous actin. In a resting sarcomere, tropomyosin blocks ...

Contractile proteins are proteins that mediate sliding of contractile fibres (contraction) of a cell’s cytoskeleton, and of cardiac and skeletal muscle. Heart and muscle contractile fibres ...

Numerous motor and structural proteins compose a highly ordered structure known as the sarcomere, the basic unit of muscle contraction in heart and skeletal muscles. Sarcomeric myosin heavy chain ...

"The reason consuming protein in food is so important is because muscle contraction always damages these sliding protein fibers and you need to consume protein in your diet to repair and replace ...

Skeletal muscle contraction is activated through voltage dependent release of Ca2+ from the intracellular storage location, the sarcoplasmic reticulum (SR) through ryanodine receptors (RyR). Ca2+ ...

Researchers investigated the quantities of thousands of muscle proteins and found a possible new explanation for muscle memory. A study showed for the first time that muscles 'remember' training at ...

PDGF-B secreted from skeletal muscle cells enhances not only cell proliferation but also muscle hypertrophy accompanied by contractile function.

Generally, training-induced adaptations in skeletal muscle are seen as changes in contractile proteins, mitochondrial function, metabolic regulation, intracellular signalling, transcriptional ...