Entrez 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, Mar 2009].
UniProt Summary: Troponin I is the inhibitory subunit of troponin, the thin filament regulatory complex which confers calcium-sensitivity to striated muscle actomyosin ATPase activity.
Pfam DomainsGO Terms
Pfam Domains
Troponin
GO Terms
troponin T binding
troponin complex
skeletal muscle contraction
actin-myosin filament sliding
muscle filament sliding
musculoskeletal movement
multicellular organismal movement
cardiac muscle contraction
heart contraction
actin-mediated cell contraction
heart process
striated muscle contraction
actin filament-based movement
regulation of muscle contraction
regulation of muscle system process
muscle contraction
actin binding
muscle system process
blood circulation
circulatory system process
actin filament-based process
regulation of system process
positive regulation of transcription, DNA-templated
movement of cell or subcellular component
positive regulation of nucleic acid-templated transcription
positive regulation of RNA biosynthetic process
positive regulation of RNA metabolic process
positive regulation of nucleobase-containing compound metabolic process
positive regulation of macromolecule biosynthetic process
system process
positive regulation of cellular biosynthetic process
positive regulation of gene expression
positive regulation of biosynthetic process
CRISPR Data
Compound HitMost Correlated Genes in ChemogenomicsTissues where Essential in the Avana Dataset (DepMap 20Q1)
Compound Hit
No hits were found.
Most Correlated Genes in Chemogenomics
No correlation found to any other genes in chemogenomics.
Tissues where Essential in the Avana Dataset (DepMap 20Q1)
Global Fraction of Cell Lines Where Essential: 0/739