TNNI2

This gene encodes a fast-twitch skeletal muscle protein, a member of the troponin I gene family, and a component of the troponin complex including troponin T, troponin C and troponin I subunits. The troponin complex, along with tropomyosin, is responsible for the calcium-dependent regulation of striated muscle contraction. Mouse studies show that this component is also present in vascular smooth muscle and may play a role in regulation of smooth muscle function. In addition to muscle tissues, this protein is found in corneal epithelium, cartilage where it is an inhibitor of angiogenesis to inhibit tumor growth and metastasis, and mammary gland where it functions as a co-activator of estrogen receptor-related receptor alpha. This protein also suppresses tumor growth in human ovarian carcinoma. Mutations in this gene cause myopathy and distal arthrogryposis type 2B. Alternatively spliced transcript variants have been found for this gene. [provided by RefSeq, Mar 2009]

Description

Troponin I2, fast skeletal type

Tissue specificity

Group enriched (skeletal muscle, tongue)

Subcell location

Plasma membrane, Intermediate filaments

Predicted location

Intracellular

Protein family

Disease related genes
Human disease related genes
Mapped to neXtProt
Mapped to UniProt SWISS-PROT
Predicted intracellular proteins
Protein evidence (Ezkurdia et al 2014)
Protein evidence (Kim et al 2014)

Chromosome

11 (1838981 - 1841680)

Ensembl ID

ENSG00000130598  (ver. 103.38)

Orthologs

Mouse Tnni2: ENSMUSG00000031097

UniProt

P48788

neXtProt

NX_P48788

Human splice variants
Mouse splice variants

Protein structure