Catalog # WX2605

phospho-N-WASP (Tyr-256) Peptide

Blocking Peptide

Application / Dilution
ELISA50 ng/well

Size 50 μg



Members of the Wiskott-Aldrich sydrome protein (WASP) family regulate the formation of actin-based cell structures in many cell types. These proteins contain C-terminal actin-binding domains that can stimulate actin polymerization. WASP is expressed primarily in hematopoietic cells, while its homolog N-WASP is widely expressed. These proteins have 48% identity in human with higher homology in the functional regions of these proteins. Phosphorylation at serine and tyrosine residues regulates the activity of both proteins. WASP is tyrosine phosphorylated at tyrosine 291 after antigen receptor activation in B-cells and collagen stimulation of platelets. Phosphorylation of the analogous site in N-WASP (Tyr-256) stimulates its activity, reduces nuclear N-WASP, and is required for neurite extension.


Wu, X. et al. (2004) J Biol Chem 279(10):9565.
Torres, E. & Rosen, M.K. (2003) Mol Cell 11:1215.
Baba, Y. et al. (1999) Blood 93:2003.

Phospho-N-WASP (Tyr-256) synthetic peptide corresponds to amino acid residues around tyrosine 256 of human N-WASP. The human WASP sequence has a two amino acid difference in the same region surrounding tyrosine 291.

*For more information, see UniProt Accession O00401
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 anti-N-WASP (Tyr-256) phospho-specific antibody (WP2601) in ELISA, and has been shown to block the reactivity of WP2601 during Western blot. In addition, the peptide is recommended for use in blocking WP2601 reactivity in 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: