Troponin is a complex of three regulatory proteins (Troponin I, Troponin T and Troponin C). It is located on the actin filament and is essential for the calcium-mediated regulation of skeletal and cardiac muscle contraction. There are tissue-specific isoforms of Troponin I, T and C and two subtypes (Cardiac Troponin I and T) are released when the heart muscle has been damaged, such as during a heart attack. The more damage there is to the heart, the greater the amount of Troponin I and T there will be in the blood and currently, Cardiac Troponin I and T are used as the preferred biochemical markers for the diagnosis of myocardial infarction. It has also been demonstrated that Cardiac Troponin I is targeted for degradation by MuRF1, an E3 ubiquitin ligase that has been linked to muscle atrophy

Ubiquitination Cascade Comoponent: Substrate

Purified using immobilized metal affinity chromatography.

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