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Original file (Ogg Theora video file, length 4.9 s, 400 × 616 pixels, 5.4 Mbps)
English: This movie illustrates how S2 can affect the conformation of a myosin head during the weak-to-strong transition followed by a working stroke. An 11 nm long segment of coiled-coil has been attached at the S1–S2 junction. The S2 segment is assumed to be compliant but its origin at the myosin filament backbone is considered fixed; the myosin head is assumed to be non-compliant. The myosin head is initially bound weakly (signified by the magenta colored myosin heavy chain). The weak-to-strong transition involves largely azimuthal movements on its actin subunit (subunit K in this case). When strong binding occurs, signified by the change in heavy chain color to red, the S2 is angled which will result in an azimuthal component to the working stroke.
|Source||Movie S8 from Wu S, Liu J, Reedy M, Tregear R, Winkler H, Franzini-Armstrong C, Sasaki H, Lucaveche C, Goldman Y, Reedy M, Taylor K (2010). "Electron Tomography of Cryofixed, Isometrically Contracting Insect Flight Muscle Reveals Novel Actin-Myosin Interactions". PLOS ONE. DOI:10.1371/journal.pone.0012643. PMID 20844746. PMC: 2936580.|
|Author||Wu S, Liu J, Reedy M, Tregear R, Winkler H, Franzini-Armstrong C, Sasaki H, Lucaveche C, Goldman Y, Reedy M, Taylor K|
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|current||04:31, 17 November 2012||4.9 s, 400 × 616 (3.13 MB)||Open Access Media Importer Bot||Automatically uploaded media file from Open Access source. Please report problems or suggestions here.|
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