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Product Includes Quantity Applications Reactivity MW(kDa) Isotype
Myosin IIa Antibody 3403 40 µl
Western Blotting Immunofluorescence
H M R 230 Rabbit 
Myosin IIb (D8H8) XP® Rabbit mAb 8824 40 µl
Western Blotting Immunofluorescence
H M R Mk 230 Rabbit IgG
Myosin IIc (D4A7) Rabbit mAb 8189 40 µl
Western Blotting Immunofluorescence
H M R Mk 230 Rabbit IgG
Anti-rabbit IgG, HRP-linked Antibody 7074 100 µl
Western Blotting
All Goat 

Product Description

The Myosin II Isoform Antibody Sampler Kit is an economical way to examine the total protein levels of myosin II isoforms a, b, and c. The kit includes enough primary and secondary antibodies to perform four Western blot experiments.


Specificity / Sensitivity

Each antibody in the Myosin II Isoform Antibody Sampler Kit detects endogenous total levels of the specified myosin II isoform.


Source / Purification

Polyclonal antibody is produced by immunizing animals with a synthetic peptide corresponding to the carboxy terminus of mouse myosin IIa and human myosin IIb.

Monoclonal antibodies are produced by immunizing animals with a synthetic peptide corresponding to residues surrounding Gly656 of human myosin IIc protein and near the carboxy terminus of human myosin IIb protein.

Nonmuscle myosin is an actin-based motor protein essential to cell motility, cell division, migration, adhesion, and polarity. The holoenzyme consists of two identical heavy chains and two sets of light chains. The light chains (MLCs) regulate myosin II activity and stability. The heavy chains (NMHCs) are encoded by three genes, MYH9, MYH10, and MYH14, which generate three different nonmuscle myosin II isoforms, IIa, IIb, and IIc, respectively (reviewed in 1). While all three isoforms perform the same enzymatic tasks, binding to and contracting actin filaments coupled to ATP hydrolysis, their cellular functions do not appear to be redundant and they have different subcellular distributions (2-5). The carboxy-terminal tail domain of myosin II is important in isoform-specific subcellular localization (6). Research studies have shown that phosphorylation of myosin IIa at Ser1943 contributes to the regulation of breast cancer cell migration (7).


1.  Conti, M.A. and Adelstein, R.S. (2008) J Cell Sci 121, 11-18.

2.  Sandquist, J.C. et al. (2006) J Biol Chem 281, 35873-83.

3.  Even-Ram, S. et al. (2007) Nat Cell Biol 9, 299-309.

4.  Vicente-Manzanares, M. et al. (2007) J Cell Biol 176, 573-80.

5.  Wylie, S.R. and Chantler, P.D. (2008) Mol Biol Cell 19, 3956-68.

6.  Sandquist, J.C. and Means, A.R. (2008) Mol Biol Cell 19, 5156-67.

7.  Dulyaninova, N.G. et al. (2007) Mol Biol Cell 18, 3144-55.


Entrez-Gene Id 4627 , 4628 , 79784
Swiss-Prot Acc. P35579 , P35580 , Q7Z406


For Research Use Only. Not For Use In Diagnostic Procedures.
Cell Signaling Technology® is a trademark of Cell Signaling Technology, Inc.