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Troponin I type 2 (skeletal, fast)
Protein TNNI2 PDB 1a2x.png
PDB rendering based on 1a2x.
Available structures
PDB Ortholog search: PDBe, RCSB
Symbols TNNI2 ; AMCD2B; DA2B; FSSV; fsTnI
External IDs OMIM191043 MGI105070 HomoloGene37752 GeneCards: TNNI2 Gene
RNA expression pattern
PBB GE TNNI2 206393 at tn.png
More reference expression data
Species Human Mouse
Entrez 7136 21953
Ensembl ENSG00000130598 ENSMUSG00000031097
UniProt P48788 P13412
RefSeq (mRNA) NM_001145829 NM_009405
RefSeq (protein) NP_001139301 NP_033431
Location (UCSC) Chr 11:
1.86 – 1.86 Mb
Chr 7:
142.44 – 142.44 Mb
PubMed search [1] [2]

Troponin I, fast skeletal muscle is a protein that in humans is encoded by the TNNI2 gene.[1][2] It is a tissue-specific subtype of troponin I, which in turn is a part of the troponin complex.


  1. ^ Tiso N, Rampoldi L, Pallavicini A, Zimbello R, Pandolfo D, Valle G, Lanfranchi G, Danieli GA (Mar 1997). "Fine mapping of five human skeletal muscle genes: alpha-tropomyosin, beta-tropomyosin, troponin-I slow-twitch, troponin-I fast-twitch, and troponin-C fast". Biochem Biophys Res Commun 230 (2): 347–50. doi:10.1006/bbrc.1996.5958. PMID 9016781. 
  2. ^ "Entrez Gene: TNNI2 troponin I type 2 (skeletal, fast)". 

Further reading[edit]