Sandbox 171: Difference between revisions
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Myosin is one of three major classes of molecular motors: myosin, dynein, and kinesin. As the most abundant of these proteins myosin plays a structural and enzymatic role in muscle contraction and intracellular motility. | Myosin is one of three major classes of molecular motors: myosin, dynein, and kinesin. As the most abundant of these proteins myosin plays a structural and enzymatic role in muscle contraction and intracellular motility. | ||
{{STRUCTURE_2mys| PDB=2mys| Scene =Sandbox_171/Newscene/1'>active site }} | |||
===Structure=== | ===Structure=== | ||
Myosin has a molecular size of approximately 520 kilodaltons, with two 220 kD heavy chains and two pairs of light chains which vary in size. <ref name="Rayment">PMID: 8316857</ref> The molecule is asymmetric, having a long tail and two globular heads. <ref name="Rayment" /> The heavy chains each constitute a globular head. <ref name="Rayment" /> | Myosin has a molecular size of approximately 520 kilodaltons, with two 220 kD heavy chains and two pairs of light chains which vary in size. <ref name="Rayment">PMID: 8316857</ref> The molecule is asymmetric, having a long tail and two globular heads. <ref name="Rayment" /> The heavy chains each constitute a globular head. <ref name="Rayment" /> | ||
[[Image:Myosin_head.gif]] | [[Image:Myosin_head.gif|thumb|alt=Alt text|Myosin head]] | ||
===Function=== | ===Function=== | ||
===Literature Cited=== | ===Literature Cited=== | ||
<references/> | <references/> | ||
