Sandbox GGC3: Difference between revisions

Myosin is a type of motor protein <scene name='75/752266/1b7t_return_scene/1'>Labeled Myosin Structure</scene>, which are proteins that specialize in turning Chemical Energy to mechanical Energy. The protein is commonly found in muscle tissue and is used for motility in eukaryotes. In order for the process to work, myosin uses the subdomains in its head to locate and attach to actin filaments <scene name='75/752266/Myosin_actinattachment/1'>Overhead view of the myosin head, where the actin filament will enter.</scene> .ATP is brought into the myosin active site, where ATPase hydrolyze the ATP to ADP+Pi.The hydrolyzing leads to tighter binding of the myosin and actin filament. The ATP hydrolyze leads to a conformational change in the myosin, causing the long chain to wrap around the actin at a 45 degree angle for tighter binding<scene name='75/752266/1b7t_long_chain/2'>The long heavy chain of myosin</scene>. The release of the Pi also leads to even tighter binding. (3) The binding of myosin and actin filament forms what is known as muscle contraction or simply contractions.An additional ATP can be added to the structure to release the actin and have the cycle repeated. (1)