Our Anti-Troponin I (cardiac) Ser43 rabbit polyclonal phosphospecific primary antibody from PhosphoSolutions is produced in-house. It detects human, mouse, and rat Troponin I (cardiac) Ser43 and is antigen affinity purified from pooled serum. It is great for use in WB.
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).
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 Ser-43 and Ser-45 of cardiac troponin I plays a substantial role in the PKC mediated depression. (Montgomery et al, 2002).
Antigen Affinity Purified from Pooled Serum
Polyclonal
IgG
WB
Rabbit
TNNI3
25 kDa
Synthetic phospho-peptide corresponding to amino acid residues surrounding Ser43 of mouse troponin I, cardiac (cTnI), conjugated to keyhole limpet hemocyanin (KLH).
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.
Liquid
Prepared from pooled rabbit serum by affinity purification via sequential chromatography on phospho and non-phosphopeptide affinity columns.
10 mM HEPES (pH 7.5), 150 mM NaCl, 100 µg per ml BSA and 50% glycerol.
WB: 1:1000
Unconjugated
Specific for endogenous levels of the ~25 kDa cardiac troponin I protein phosphorylated at Ser43. Immunolabeling is greatly decreased with λ-phosphatase treatment.
Phosphorylated
Ser43
Western blots performed on each lot.
For research use only. Not intended for therapeutic or diagnostic use. Use of all products is subject to our terms and conditions, which can be viewed on our website.
After date of receipt, stable for at least 1 year at -20°C.
Blue Ice
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Chammas, M.C., et al. 2019. Characterization of Malignant Portal Vein Thrombosis with Contrast-Enhanced Ultrasonography. Ultrasound in Medicine & Biology, 45(1), pp.50-55.
Thoemmes, S.F., et al. 2014. Characterization and validation of new tools for measuring site-specific cardiac troponin I phosphorylation. Journal of Immunological Methods, 403(1), 66-71.
Walker, L.A., et al. 2013. Contractile protein phosphorylation predicts human heart disease phenotypes. American Journal of Physiology-Heart and Circulatory Physiology, 304(12), H1644-H1650.
Thoemmes, S.F., et al. 2014. Characterization and validation of new tools for measuring site-specific cardiac troponin I phosphorylation. Journal of Immunological Methods, 403(1), 66-71.
Chammas, M.C., et al. 2019. Characterization of Malignant Portal Vein Thrombosis with Contrast-Enhanced Ultrasonography. Ultrasound in Medicine & Biology, 45(1), pp.50-55.
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