TNNT3 Back

troponin T type 3 (skeletal, fast)

External References:      Wikipedia GeneCards HUGO COSMIC Google Scholar

NCBI Description of TNNT3

The binding of Ca(2+) to the trimeric troponin complex initiates the process of muscle contraction. Increased Ca(2+) concentrations produce a conformational change in the troponin complex that is transmitted to tropomyosin dimers situated along actin filaments. The altered conformation permits increased interaction between a myosin head and an actin filament which, ultimately, produces a muscle contraction. The troponin complex has protein subunits C, I, and T. Subunit C binds Ca(2+) and subunit I binds to actin and inhibits actin-myosin interaction. Subunit T binds the troponin complex to the tropomyosin complex and is also required for Ca(2+)-mediated activation of actomyosin ATPase activity. There are 3 different troponin T genes that encode tissue-specific isoforms of subunit T for fast skeletal-, slow skeletal-, and cardiac-muscle. This gene encodes fast skeletal troponin T protein; also known as troponin T type 3. Alternative splicing results in multiple transcript variants encoding additional distinct troponin T type 3 isoforms. A developmentally regulated switch between fetal/neonatal and adult troponin T type 3 isoforms occurs. Additional splice variants have been described but their biological validity has not been established. Mutations in this gene may cause distal arthrogryposis multiplex congenita type 2B (DA2B).

Community Annotation of TNNT3 Add / Edit TNNT3: Annotations

No community annotations yet for TNNT3.
Sort mutations by: Tumor type  Mutation type  Position  
Straightedge cursor Expand

Figure notes


• "Mouse over" a mutation to see details.
• Missense green saturation indicates evolutionary conservation of the mutated positions.
• Red hashes in protein strip are splice sites.
• Blue-white-red bars are log2 copy ratio distributions (–1 to +1) from Zack et al. (2013).


Legend

TNNT3 is highly significantly mutated in
(none)
TNNT3 is significantly mutated in
(none)
TNNT3 is near significance in
(none)

Click on a tumor type to see its full list of significant genes.

Data details


Mutation list for TNNT3