What is Troponin?
Troponin is a protein found in muscle cells, particularly in cardiac and skeletal muscles. It is absent in smooth muscle cells. Troponin functions in muscle contraction by regulating the binding of calcium ions to actin filaments, enabling muscle fibres to contract and relax effectively. This protein complex is made up of three components – Troponin C, Troponin T, and Troponin I.
Every component performs a distinct role. The troponin attached to the actin filaments restructures and reveals the actin sites where the myosin heads can attach as the calcium levels in our cells rise. The muscle contracts as a result of this structural changes, which causes myosin to bind to actin. In medicine, troponin levels are very important as the Troponin levels in the blood are monitored for acute cardiac problems, myocardial infarction, and stroke.
Difference Between Troponin and Tropomyosin
The difference between Troponin and Tropomyosin lies in their roles within the muscle contraction process. Troponin and tropomyosin are regulatory proteins in muscles. Troponin regulates the binding of calcium ions to actin filaments, while Tropomyosin blocks the active sites on actin, preventing myosin binding.
They are found on the thin filaments of muscle cells that help muscles contract. While troponin facilitates muscle contraction, tropomyosin blocks muscle contraction. In this article, we will study the difference between Troponin and Tropomyosin in detail.
Table of Content
- What is Troponin?
- What is Tropomyosin?
- Relation Between Troponin and Tropomyosin
- Difference Between Troponin and Tropomyosin
- Conclusion – Difference between Troponin and Tropomyosin
- Difference Between Related Links
- FAQs on Difference Between Troponin and Tropomyosin