dictionary week 10

Key terms:

• Actin
• Troponin complex
• M line

Actin - Thin globular filament with the binding proteins tropomyosin and the troponin complex. This thin protein is involved in muscle contraction via its interaction with myosin.

https://www.sigmaaldrich.com/content/dam/sigma-aldrich/life-science/metabolomics/enzyme-explorer/f-actin.gif

Troponin complex - Complex of three proteins including tnl, TnC, and TnT bound to actin. Calcium binds to the troponin complex to allow for muscle contraction which moves tropomyosin from the binding site between actin and myosin. 

https://www.hypermol.com/images/product_images/original_images/tropomyosin_troponin.png?XTCsid=5d01c310d7f6284214f030e2ff1eafc4

M line - Region of sarcomere that is the region, which is the center of the A band and consisting of solely myosin fibers. 

http://droualb.faculty.mjc.edu/Course%20Materials/Elementary%20Anatomy%20and%20Physiology%2050/Lecture%20outlines/sarcomere.jpg