Product Name
cTnI (TNNI3), Polyclonal Antibody
Full Product Name
Anti-cTnI Antibody
Product Synonym Names
TNNC1; Troponin I, cardiac muscle; Cardiac troponin I
Product Gene Name
anti-TNNI3 antibody
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Antibody/Peptide Pairs
cTnI peptide (MBS8204539) is used for blocking the activity of cTnI antibody (MBS8211896)
Research Use Only
For Research Use Only. Not for use in diagnostic procedures.
3D Structure
ModBase 3D Structure for P19429
Species Reactivity
Human, Mouse, Rat, Bovine, Dog, Porcine
Specificity
Recognizes endogenous levels of cTnI protein.
Purity/Purification
The antibody was purified by immunogen affinity chromatography.
Form/Format
Liquid in 0.42% Potassium phosphate, 0.87% Sodium chloride, pH 7.3, 30% glycerol, and 0.01% sodium azide.
Immunogen
KLH-conjugated synthetic peptide encompassing a sequence within the N-term region of human cTnI. The exact sequence is proprietary.
Preparation and Storage
Shipped at 4 degree C. Upon delivery aliquot and store at -20 degree C for one year. Avoid freeze/thaw cycles.
Other Notes
Small volumes of anti-TNNI3 antibody vial(s) may occasionally become entrapped in the seal of the product vial during shipment and storage. If necessary, briefly centrifuge the vial on a tabletop centrifuge to dislodge any liquid in the container`s cap. Certain products may require to ship with dry ice and additional dry ice fee may apply.
Related Product Information for
anti-TNNI3 antibody
Rabbit polyclonal antibody to cTnI
Applications Tested/Suitable for anti-TNNI3 antibody
Western Blot (WB), Immunohistochemistry (IHC)
Application Notes for anti-TNNI3 antibody
WB (1/500 - 1/1000), IHC (1/100 - 1/200)
Western Blot (WB) of anti-TNNI3 antibody
Western blot analysis of cTnI expression in human heart (A), mouse heart (B), rat heart (C) whole cell lysates.

Immunohistochemistry (IHC) of anti-TNNI3 antibody
Immunohistochemical analysis of cTnI staining in human heart formalin fixed paraffin embedded tissue section. The section was pre-treated using heat mediated antigen retrieval with sodium citrate buffer (pH 6.0). The section was then incubated with the antibody at room temperature and detected using an HRP conjugated compact polymer system. DAB was used as the chromogen. The section was then counterstained with haematoxylin and mounted with DPX.

NCBI/Uniprot data below describe general gene information for TNNI3. It may not necessarily be applicable to this product.
NCBI Accession #
NP_000354.4
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NCBI GenBank Nucleotide #
NM_000363.4
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UniProt Primary Accession #
P19429
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UniProt Related Accession #
P19429[Other Products]
Molecular Weight
24,008 Da
NCBI Official Full Name
troponin I, cardiac muscle
NCBI Official Synonym Full Names
troponin I type 3 (cardiac)
NCBI Official Symbol
TNNI3 [Similar Products]
NCBI Official Synonym Symbols
CMH7; RCM1; cTnI; CMD2A; TNNC1; CMD1FF
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NCBI Protein Information
troponin I, cardiac muscle
UniProt Protein Name
Troponin I, cardiac muscle
UniProt Synonym Protein Names
Cardiac troponin I
UniProt Gene Name
TNNI3 [Similar Products]
UniProt Synonym Gene Names
TNNC1 [Similar Products]
UniProt Entry Name
TNNI3_HUMAN
NCBI Summary for TNNI3
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. This gene encodes the TnI-cardiac protein and is exclusively expressed in cardiac muscle tissues. Mutations in this gene cause familial hypertrophic cardiomyopathy type 7 (CMH7) and familial restrictive cardiomyopathy (RCM). [provided by RefSeq, Jul 2008]
UniProt Comments for TNNI3
TNNI3: Troponin I is the inhibitory subunit of troponin, the thin filament regulatory complex which confers calcium-sensitivity to striated muscle actomyosin ATPase activity. Binds to actin and tropomyosin. Interacts with TRIM63. Interacts with STK4/MST1. Belongs to the troponin I family.
Protein type: Motility/polarity/chemotaxis; Motor; Actin-binding
Chromosomal Location of Human Ortholog: 19q13.4
Cellular Component: sarcomere; troponin complex; cytosol
Molecular Function: troponin T binding; troponin C binding; protein domain specific binding; protein binding; metal ion binding; calcium channel inhibitor activity; actin binding; protein kinase binding; calcium-dependent protein binding
Biological Process: regulation of smooth muscle contraction; cellular calcium ion homeostasis; heart contraction; heart development; regulation of systemic arterial blood pressure by ischemic conditions; ventricular cardiac muscle morphogenesis; vasculogenesis; negative regulation of ATPase activity; muscle filament sliding; cardiac muscle contraction
Disease: Cardiomyopathy, Dilated, 1ff; Cardiomyopathy, Familial Restrictive, 1; Cardiomyopathy, Familial Hypertrophic, 7; Cardiomyopathy, Dilated, 2a
Research Articles on TNNI3
1. hsTnI concentrations in the top tertile are associated with a 1st major cardiovascular event and all-cause mortality in a primary prevention cohort. Release may be due to myocardial cell necrosis, apoptosis, hemodynamic stress, or metabolic abnormalities.
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