Products

Enzyme Immunoassay

Entrez GeneID

Gene Name

TNNI1

Gene Alias

DKFZp451O223, SSTNI, TNN1

Gene Description

troponin I type 1 (skeletal, slow)

Omim ID

Gene Ontology

Gene Summary

Troponin proteins associate with tropomyosin and regulate the calcium sensitivity of the myofibril contractile apparatus of striated muscles. Troponin I (TnI), along with troponin T (TnT) and troponin C (TnC), is one of 3 subunits that form the troponin complex of the thin filaments of striated muscle. TnI is the inhibitory subunit; blocking actin-myosin interactions and thereby mediating striated muscle relaxation. The TnI subfamily contains three genes: TnI-skeletal-fast-twitch, TnI-skeletal-slow-twitch, and TnI-cardiac. The TnI-fast and TnI-slow genes are expressed in fast-twitch and slow-twitch skeletal muscle fibers, respectively, while the TnI-cardiac gene is expressed exclusively in cardiac muscle tissue. This gene encodes the Troponin-I-skeletal-slow-twitch protein. This gene is expressed in cardiac and skeletal muscle during early development but is restricted to slow-twitch skeletal muscle fibers in adults. The encoded protein prevents muscle contraction by inhibiting calcium-mediated conformational changes in actin-myosin complexes. [provided by RefSeq

Other Designations

OTTHUMP00000033877|OTTHUMP00000033910|slow-twitch skeletal troponin I|troponin I, skeletal, slow

Entrez GeneID

Gene Name

TNNI2

Gene Alias

AMCD2B, DA2B, FSSV

Gene Description

troponin I type 2 (skeletal, fast)

Omim ID

Gene Ontology

Gene Summary

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

Other Designations

OTTHUMP00000014141|OTTHUMP00000014142|troponin I fast twitch 2|troponin I, fast-twitch skeletal muscle isoform|troponin I, skeletal, fast