Product Name
cTnI (TNNI3), Polyclonal Antibody
Full Product Name
Anti-cTnI Antibody
Product Synonym Names
TNNI3; TNNC1; Troponin I, cardiac muscle; Cardiac troponin I
Product Gene Name
anti-TNNI3 antibody
[Similar Products]
Antibody/Peptide Pairs
cTnI peptide (MBS8229533) is used for blocking the activity of cTnI antibody (MBS8241019)
Research Use Only
For Research Use Only. Not for use in diagnostic procedures.
3D Structure
ModBase 3D Structure for P19429
Species Reactivity
Mouse, Rat, Porcine, Rabbit
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), Immunofluorescence (IF), Immunocytochemistry (ICC)
Application Notes for anti-TNNI3 antibody
WB (1/500 - 1/1000), IHC (1/100 - 1/200), IF (1/100 - 1/500), ICC (1/100 - 1/500)
Western Blot (WB) of anti-TNNI3 antibody
Western blot analysis of over-expressed FLAG-tagged protein in 293T cell lysate.

Immunohistochemistry (IHC) of anti-TNNI3 antibody
Immunofluorescence (IF) of anti-TNNI3 antibody
Immunofluorescent analysis of FLAG-tag staining in 293T cells transfected with a Flag-tag protein. Formalin-fixed cells were permeabilized with 0.1% Triton X-100 in TBS for 5-10 minutes and blocked with 3% BSA-PBS for 30 minutes at room temperature. Cells were probed with the primary antibody in 3% BSA-PBS and incubated overnight at 4 °C in a humidified chamber. Cells were washed with PBST and incubated with a DyLight 594-conjugated secondary antibody (red) in PBS at room temperature in the dark. DAPI was used to stain the cell nuclei (blue).

NCBI/Uniprot data below describe general gene information for TNNI3. It may not necessarily be applicable to this product.
NCBI Accession #
NP_000354.4
[Other Products]
NCBI GenBank Nucleotide #
NM_000363.4
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UniProt Primary Accession #
P19429
[Other Products]
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
[Similar Products]
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: Motor; Actin-binding; Motility/polarity/chemotaxis
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; calcium-dependent protein binding; protein kinase binding
Biological Process: regulation of smooth muscle contraction; cellular calcium ion homeostasis; heart contraction; regulation of systemic arterial blood pressure by ischemic conditions; heart development; ventricular cardiac muscle morphogenesis; vasculogenesis; negative regulation of ATPase activity; cardiac muscle contraction; muscle filament sliding
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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