Catalog # AX1655

Actin (N-terminal region) Peptide

Blocking Peptide

Application / Dilution
ELISA50 ng/well

Size 50 μg



Actin is a major cytoskeletal protein involved in diverse cellular functions including cell motility, adhesion, and morphology. Six different actin isoforms have been identified in vertebrates. There are four α isoforms: skeletal, cardiac, and two smooth muscle (enteric and aortic) actins, along with two cytoplasmic actins (β and γ). Actin exists in two principal forms, globular, monomeric (G) actin, and filamentous polymeric (F) actin. The assembly and disassembly of actin filaments, and also their organisation into functional networks, is regulated by a variety of actin-binding proteins (ABPs). Phosphorylation may also be important for regulating actin assembly and interaction with ABPs. In Dictyostelium, phosphorylation of Tyr-53 occurs in response to cell stress and this phosphorylation may alter actin polymerizaiton. In B cells, SHP-1 tyrosine dephosphorylation of actin leads to actin filament depolymerization following BCR stimulation.



Liu, X. et al. (2006) Proc Nat Acad Sci U S A. 103(37):13694.
Winder, S.J. et al. (2005) J. Cell Sci. 118:651.
Baba, T. et al. (2003) J. Immunol. 170: 3762.
Jungbluth, A. et al. (1995) FEBS Let. 375:87.

Immunocytochemical labeling using anti-Actin (N-terminal) and anti-Actin (Tyr-53) polyclonal antibodies in C2C12 cells control (left) or treated with pervanadate (1 mM) for 30 min (middle). The cells were fixed in paraformaldehyde and permeabilized in acetone. Both antibodies were used in the presence of blocking peptide: Actin (N-terminal) peptide (AX1655) or phospho-Actin (Tyr-53) peptide (AX1675), respectively (right).

Actin synthetic peptide (coupled to KLH) corresponding to amino acid residues in the N-terminal region of human β actin. This sequence is identical to similar regions in all four α actins, as well as in g actin, and is well conserved in actins from most eukaryotic species.

*For more information, see UniProt Accession P60709
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 actin (N-terminal Region) antibody (AP1651) in ELISA, and has been shown to block the reactivity of AP1651 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: