Catalog # TX1725

phospho-β-Tubulin (Ser-172) Peptide

Blocking Peptide

Application / Dilution
ELISA50 ng/well

Size 50 μg



Microtubules (MTs) are cytoskeletal elements that play an essential role in cell division and cytoplasmic organization. MTs are dynamic polymers of a/β-Tubulin heterodimers. At least two populations of MTs, called dynamic and stable according to their rates of turnover, are readily distinguishable in cells. The proteins associated with MTs (MAPs) are among the best-known factors that regulate MT dynamics and stability. In addition, a variety of different post-translational modifications may also regulate MT dynamics and stability. Phosphorylation is one of these modifications and it can occur on serine, threonine, and tyrosine residues in β-Tubulin isoforms. Multiple kinases can phosphorylate Ser-444 at the C-terminus of βIII-Tubulin in vitro. Unphosphorylated Ser-444 in βIII-Tubulin is an early marker for cells of neuronal lineage, while phosphorylation of Ser-444 is upregulated after neuronal maturation and may preferentially occur in assembled MTs. By contrast, Cdk1 phosphorylation of Ser-172 in β-Tubulin occurs in mitotic cells and may impair tubulin incorporation into microtubules.



Fourest-Lieuvin, A. et al. (2006) Mol. Biol. Cell. 17(3):1041.
Westermann, S. & Weber, K. (2003) Nat. Rev. Mol. Cell. Biol. 4:938.
Fanarraga, M.L. et al. (1999) Eur. J. Neurosci. 11:517.
Diaz-Nido, J. et al. (1990) J Biol. Chem. 265(23):13949.

Immunocytochemical labeling in C2C12 cells using anti-β-Tubulin (TM1541) monoclonal antibody and anti-β-Tubulin (Ser-172) polyclonal antibody. The specificity of the binding for the latter antibody was demonstrated by using the antibody in the presence of phospho-β-Tubulin (Ser-172) peptide (TX1725).

Phospho-βIII-Tubulin (Ser-172) synthetic peptide contains amino acid residues around serine 172 of human βIII-Tubulin. This sequence is identical to similar regions in βI, βII, and βIII-Tubulin isotypes, and is well conserved in tubulins from most eukaryotic species.

*For more information, see UniProt Accession Q13509
Blocking Peptide is supplied in 50µl phosphate-buffered saline and 0.05% sodium azide. Store at –20°C. Stable for 1 year.

The products are are safely shipped at ambient temperature for both domestic and international shipments. Each product is guaranteed to match the specifications as indicated on the corresponding technical data sheet. Please store at -20C upon arrival for long term storage.

The peptide is specifically recognized by β-Tubulin (Ser-172) phospho-specific antibody (TP1721) in ELISA, and has been shown to block the reactivity of TP1721 in Western blot and immunocytochemistry.

*All molecular weights (MW) are confirmed by comparison to Bio-Rad Rainbow Markers and to western blot mobilities of known proteins with similar MW.

This kit contains: