After several years of serving the research community, our ActiveDriverDB database will be retired on May 1st 2026. Please make sure to download any data you need and update your links or workflows before that date.
We want to sincerely thank all our users for their support, feedback, and collaboration over the years — your contributions have been invaluable to this project. A special thank you to Dr. Michal Krassowski for leading the development of our open-source software and database.
For any questions or assistance, please contact Jüri Reimand (juri.reimand@utoronto.ca).
TNNT3 (NM_001042782) - troponin T3, fast skeletal type
Troponin T, Fast Skeletal Muscle Isoform 4
Legend
Mutation impacts
Sites
- C-linked
- N-linked
- O-linked
- S-linked
- SARS-CoV-2
Others
If you have any questions or feedback about this protein:
Contact us
Mutations Visualisation
Protein summary
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). [provided by RefSeq, Oct 2009].
- Strand
- +
- Chromosome
- 11
- Protein
- 250 residues
- All mutations
- 57
- PTM sites
- 0
- CDS
- 1,944,104 - 1,959,722
- Transcription
- 1,940,798 - 1,959,936
External references
- Entrez
- gene: 7140
-
UniProt