Affinity purified from pooled serum. Learn more.

Troponin I, cardiac (Ser43) Antibody

Catalog #: p2010-43 Category: Datasheet:


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Rabbit polyclonal antibody

Pooled Serum
Affinity Purified from Pooled Serum
Species Reactivity:
Rat, Mouse, Human, Xenopus, Bovine, Non-human primate, Zebra fish, Sheep, Canine
WB 1:1000
Rabbit Polyclonal
Gene Name:
Molecular Reference:
~25 kDa
Cite This Antibody:
PhosphoSolutions Cat# p2010-43, RRID:AB_2492269
Antigen/Purification: ExpandCollapse

The antigen is a phosphopeptide corresponding to amino acid residues surrounding the phospho-Ser43 of mouse troponin I, cardiac (cTnI).

The antibody is prepared from pooled rabbit serum by affinity purification via sequential chromatography on phospho- and dephospho-peptide affinity columns.

Biological Significance: ExpandCollapse

Troponin I (TnI) is 1 of 3 subunits, along with troponin C (TnC) and Troponin T (TnT) of troponin complex found in cardiac (cTnI) and fast skeletal (fsTnI) muscle (Noland et al, 1995). Protein kinase C-mediated phosphorylation of cardiac myofilament proteins has been shown to depress the actomyosin interaction and may be important during heart failure. (Montgomery et al, 2002) Studies indicate that phosphorylation of Ser43 and Ser45 of cardiac troponin I plays a substantial role in the PKCmediated depression. (Montgomery et al, 2002).

Synonyms: ExpandCollapse

• cardiac muscle antibody
• Cardiac troponin I antibody
• Cardiac Troponin I antibody
• cardiomyopathy, dilated 2A (autosomal recessive) antibody
• Cardiomyopathy, familial hypertrophic, 7, included antibody
• CMD1FF antibody
• CMD2A antibody
• CMH7 antibody
• cTnI antibody
• Familial hypertrophic cardiomyopathy 7 antibody
• MGC116817 antibody
• RCM1 antibody
• Tn1 antibody
• Tni antibody
• TNN I3 antibody
• TNNC 1 antibody
• TNNC1 antibody
• TNNI3 antibody
• TNNI3_HUMAN antibody
• Troponin I antibody
• Troponin I cardiac antibody
• Troponin I cardiac muscle antibody
• Troponin I cardiac muscle isoform antibody
• Troponin I type 3 cardiac antibody
• troponin I, cardiac 3 antibody
• TroponinI antibody
• Ttroponin I type 3 (cardiac) antibody


100 µl in 10 mM HEPES (pH 7.5), 150 mM NaCl, 100 µg per ml BSA and 50% glycerol. Adequate amount of material to conduct 10-mini Western Blots.

Storage at -20°C is recommended, as aliquots may be taken without freeze/thawing due to presence of 50% glycerol. Stable for at least 1 year at -20°C.

Product Specific References

Thoemmes, S. F., Stutzke, C. A., Du, Y., Browning, M. D., Buttrick, P. M., & Walker, L. A. (2014). Characterization and validation of new tools for measuring site-specific cardiac troponin I phosphorylation. Journal of immunological methods, 403(1), 66-71. PMID: 24291343

Walker, L. A., Fullerton, D. A., & Buttrick, P. M. (2013). Contractile protein phosphorylation predicts human heart disease phenotypes. American Journal of Physiology-Heart and Circulatory Physiology, 304(12), H1644-H1650. PMID: 23564307


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Troponin I, cardiac Ser43 Antibody
Western blot of mouse heart lysate showing specific immunolabeling of the ~25 kDa cardiac troponin I protein phosphorylated at Ser43 in the first lane (-). Phosphospecificity is shown in the second lane (+) where the immunolabeling is greatly decreased by blot treatment with lambda phosphatase (λ-Ptase, 1200 units for 30 minutes).

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