 |
Inhaltsübersicht | Nanomaschinen | Moleküle | Programme | Kurse | Fun | Links |
 |
| > |
Myosin
Power in Numbers
Each myosin performs only a tiny molecular motion. It takes about 2 trillion myosin molecules to provide the force to hold up a baseball. Our biceps have a million times this many, so only a fraction of the myosin molecules need to be exerting themselves at any given time. By working together, the tiny individual power stroke of each myosin is summed to provide macroscopic power in our familiar world. The painting shows how myosin is arranged inside muscle cells. About 300 myosin molecules bind together, with all of the long tails bound tightly together into a large "thick filament." A short segment of a thick filament is shown in red, next to a scale drawing of a single myosin molecule. The many myosin heads extending from the thick filament then reach over to actin filaments, shown in blue and green, and together climb their way up.Next: The Power Stroke
Previous: Myosin
Last changed by: A.Honegger,