Troponin T, Cardiac (Troponin T Cardiac Muscle, TnTC, Troponin T Type 2 (Cardiac), Troponin T2, TNNT2, Cardiac Muscle Troponin T, cTnT, CMD1D, CMH2, MGC3889)

Troponin, working in conjunction with tropomyosin, functions as a molecular switch, regulating\nmuscle contraction in response to changes in the intracellular Ca2+ concentration. Troponin consists of three subunits: the Ca2+-binding subunit troponin C (TnC), the tropomyosin-binding subunit troponin T (TnT), and the inhibitory subunit troponin I (TnI) (1). In response to B-adrenergic stimulation of the heart, Ser23 and Ser24 of TnI (cardiac) are phosphorylated by PKA and PKC. This phosphorylation stimulates a conformational change of the regulatory domain of TnC, reduces the association between TnI and TnC, and decreases myofilament Ca2+ sensitivity by reducing the Ca2+ binding affinity of TnC (1-3). The tropomyosin binding subunit of the troponin complex TnT exists as different isoforms in slow skeletal muscle (ssTnT/TNNT1), fast skeletal muscle (fsTnT/TNNT3) and in cardiac muscle (cTnT/TNNT2). Each of these may also contain multiple alternatively spliced variants. Assays for measuring serum concentrations of cTnT, as well as cTnI, have been reported for analyzing cardiac injury.\n\nApplications: \nSuitable for use in Western Blot. Other applications not tested.\n\nRecommended Dilution: \nWestern Blot: 1:1000 Incubate membrane with diluted antibody in 5% BSA, 1X TBS, 0.1% Tween-20 at 4 degrees C with gentle shaking, overnight.\nOptimal dilutions to be determined by the researcher.\n\nStorage and Stability:\nMay be stored at 4 degrees C for short-term only. Aliquot to avoid repeated freezing and thawing. Store at -20 degrees C. Aliquots are stable for at least 12 months. For maximum recovery of product, centrifuge the original vial after thawing and prior to removing the cap.

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SPECIFICATIONS

Catalog Number

T8665-31

Size

100ul

Applications

WB

Hosts

Rabbit

Reactivities

Hum, Rat, NHP

Form

Supplied as a liquid in 10mM sodium HEPES, pH 7.5, 150mM sodium chloride, 100ug/ml BSA, 50% glycerol.

P Type

Pab

Purity

Purified by Protein A affinity chromatography.

Isotype

IgG

References

(1) Ward, D.G. et al. (2002) J. Biol. Chem. 277,41795-41801. (2) Noland, T.A. et al. (1995) J. Biol. Chem. 270,25445-25454. (3) Gaponenko, V. et al. (1999) J. Biol. Chem. 274,16681-16684.

Additional Info

Recognizes endogenous levels of total cardiac Troponin T protein. Species Crossreactivity: monkey, rat.