When muscle cells are viewed under the microscope, one can see that they contain a striped pattern (striations). This pattern is formed by a series of basic units called sarcomeres that are arranged ...

Two ground-breaking papers, published back-to-back in Nature 54 years ago, independently showed that muscle shortens as a result of the sliding between the thick and thin filaments of the fibres ...

Skeletal and heart muscles contract and relax upon sliding of parallel filaments of the proteins myosin and actin. Nebulin, another long slender protein, which is present only in skeletal muscle, ...