What is Tropomyosin?
Tropomyosin is a protein found in muscle cells, specifically associated with thin filaments. They are found in the cytoplasm and are present as double-stranded, coiled, alpha-helical structure. They are categorised as muscle tropomyosins and nonmuscle tropomyosins because they are found in both muscle and nonmuscle cells. The nonmuscle tropomyosins facilitate interactions and activities within cells. Low calcium levels cause the muscle protein tropomyosin to function.
Tropomyosin is a lengthy protein that assembles into a filamentous structure and is usually connected to the muscle cells’ actin filaments. Actin and myosin, the two primary proteins involved in muscle contraction, interact with each other, and tropomyosin, along with troponin, helps regulate this connection.
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