Tropomyosin: Difference between revisions
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[[Image:1c1g.png|left|100px]] | [[Image:1c1g.png|left|100px|thumb|Crystal Structure of Pig Tropomyosin, [[1c1g]]]] | ||
{{STRUCTURE_1c1g| PDB=1c1g | SIZE= | {{STRUCTURE_1c1g| PDB=1c1g | SIZE=300| SCENE=Tropomyosin/Cv/1 |CAPTION=Tropomyosin from pig, [[1c1g]] }} | ||
'''3D Structure of Tropomyosin''' <br /> | '''3D Structure of Tropomyosin''' <br /> | ||
Tropomyosin (TPM) has a 4-helix coiled dimer structure. It regulates the binding of myosin thus regulating muscle contraction. In its locked conformation it binds troponin T (TnnT) and prevents the binding of myosin to actin. When Ca++ ions bind to TnnT, the TPM assumes an open conformation and myosin can bind to actin. You can <scene name='Tropomyosin/Cv/2'>enlarge the image</scene> at the right for clarity. | |||
== Tropomyosin == | == Tropomyosin == | ||