• Product name
    Anti-VASP (phospho S157) antibody [5C6]
    See all VASP primary antibodies
  • Description
    Mouse monoclonal [5C6] to VASP (phospho S157)
  • Host species
  • Specificity
    This antibody recognizes the the ~50 kDa VASP protein phosphorylated at Ser157. It does not cross-react with non-phosphorylated VASP or with un-related phosphorylation sites.
  • Tested applications
    Suitable for: Flow Cyt, WB, IP, ELISA, ICC/IFmore details
  • Species reactivity
    Reacts with: Mouse, Human
  • Immunogen

    A synthetic phosphopeptide corresponding to amino acids surrounding the Ser157 phosphorylation site of human VASP

  • Positive control
    • Vanadate-treated A431 cells


  • Form
  • Storage instructions
    Shipped at 4°C. Store at +4°C short term (1-2 weeks). Upon delivery aliquot. Store at -20°C or -80°C. Avoid freeze / thaw cycle.
  • Storage buffer
    Preservative: 0.1% Sodium azide
  • Concentration information loading...
  • Purity
    Size exclusion
  • Purification notes
    Mouse monoclonal antibody purified from serum-free cell culture supernatant by thiophilic adsorption and size exclusion chromatography.
  • Clonality
  • Clone number
  • Isotype
  • Research areas


Our Abpromise guarantee covers the use of ab58555 in the following tested applications.

The application notes include recommended starting dilutions; optimal dilutions/concentrations should be determined by the end user.

Application Abreviews Notes
Flow Cyt Use 0.5µg for 106 cells.

ab170190 - Mouse monoclonal IgG1, is suitable for use as an isotype control with this antibody.


WB Use a concentration of 0.1 - 1 µg/ml. Predicted molecular weight: 42 kDa.
IP Use 1-10µg for 106 cells.
ELISA Use a concentration of 0.05 µg/ml.
ICC/IF Use a concentration of 1 - 10 µg/ml. For immunocytochemistry, fixation protocol may include up to 0.5% formaldehyde.


  • Function
    Ena/VASP proteins are actin-associated proteins involved in a range of processes dependent on cytoskeleton remodeling and cell polarity such as axon guidance, lamellipodial and filopodial dynamics, platelet activation and cell migration. VASP promotes actin filament elongation. It protects the barbed end of growing actin filaments against capping and increases the rate of actin polymerization in the presence of capping protein. VASP stimulates actin filament elongation by promoting the transfer of profilin-bound actin monomers onto the barbed end of growing actin filaments. Plays a role in actin-based mobility of Listeria monocytogenes in host cells. Regulates actin dynamics in platelets and plays an important role in regulating platelet aggregation.
  • Tissue specificity
    Highly expressed in platelets.
  • Sequence similarities
    Belongs to the Ena/VASP family.
    Contains 1 WH1 domain.
  • Domain
    The EVH2 domain is comprised of 3 regions. Block A is a thymosin-like domain required for G-actin binding. The KLKR motif within this block is essential for the G-actin binding and for actin polymerization. Block B is required for F-actin binding and subcellular location, and Block C for tetramerization.
    The WH1 domain mediates interaction with XIRP1.
  • Post-translational
    Major substrate for cAMP-dependent (PKA) and cGMP-dependent protein kinase (PKG) in platelets. The preferred site for PKA is Ser-157, the preferred site for PKG, Ser-239. In ADP-activated platelets, phosphorylation by PKA or PKG on Ser-157 leads to fibrinogen receptor inhibition. Phosphorylation on Thr-278 requires prior phosphorylation on Ser-157 and Ser-239. In response to phorbol ester (PMA) stimulation, phosphorylated by PKC/PRKCA. In response to thrombin, phosphorylated by both PKC and ROCK1. Phosphorylation at Thr-278 by AMPK does not require prior phosphorylation at Ser-157 or Ser-239. Phosphorylation modulates F-actin binding, actin filament elongation and platelet activation. Carbon monoxide (CO) promotes phosphorylation at Ser-157, while nitric oxide (NO) promotes phosphorylation at Ser-157, but also at Ser-239. Response to NO and CO is blunted in platelets from diabetic patients, and VASP is not phosphorylated efficiently at Ser-157 and Ser-239.
  • Cellular localization
    Cytoplasm. Cytoplasm > cytoskeleton. Cell junction > focal adhesion. Cell projection > lamellipodium membrane. Cell projection > filopodium membrane. Targeted to stress fibers and focal adhesions through interaction with a number of proteins including MRL family members. Localizes to the plasma membrane in protruding lamellipodia and filopodial tips. Stimulation by thrombin or PMA, also translocates VASP to focal adhesions. Localized along the sides of actin filaments throughout the peripheral cytoplasm under basal conditions.
  • Information by UniProt
  • Database links
  • Alternative names
    • Vasodilator stimulated phosphoprotein antibody
    • Vasodilator-stimulated phosphoprotein antibody
    • VASP antibody
    • VASP_HUMAN antibody


  • Overlay histogram showing THP1 cells stained with ab58555 (red line). The cells were fixed with 80% methanol (5 min) and then permeabilized with 0.1% PBS-Tween for 20 min. The cells were then incubated in 1x PBS / 10% normal goat serum / 0.3M glycine to block non-specific protein-protein interactions followed by the antibody (ab58555, 0.5µg/1x106 cells) for 30 min at 22ºC. The secondary antibody used was DyLight® 488 goat anti-mouse IgG (H+L) (ab96879) at 1/500 dilution for 30 min at 22ºC. Isotype control antibody (black line) was mouse IgG1 [ICIGG1] (ab91353, 2µg/1x106 cells) used under the same conditions. Unlabelled sample (blue line). Acquisition of >5,000 events were collected using a 20mW Argon ion laser (488nm) and 525/30 bandpass filter.


This product has been referenced in:
  • Neukamm SS  et al. Phosphorylation of serine 1137/1138 of mouse insulin receptor substrate (IRS) 2 regulates cAMP-dependent binding to 14-3-3 proteins and IRS2 protein degradation. J Biol Chem 288:16403-15 (2013). Human . Read more (PubMed: 23615913) »
  • Mise N  et al. Zyxin is a transforming growth factor-ß (TGF-ß)/Smad3 target gene that regulates lung cancer cell motility via integrin a5ß1. J Biol Chem 287:31393-405 (2012). WB . Read more (PubMed: 22778267) »
See all 2 Publications for this product

Customer reviews and Q&As


Thank you for contacting us regarding ab58555.

I have contacted the lab on your behalf, the antibody would be fine as well in a different buffer containing another stabilizing agent e.g. BSA. However this product is provided in PEG and sucrose as was found the antibody was suffering less during lyophilization.

The antibody itself is not stickier than other antibodies. It seems possible that the buffer with the PEG and sucrose is responsible of the low yield that you are getting after the conjugation. The buffer exchange method may need to be adjusted for improved performance.

We would recommend use of one of our concentration kits for performing buffer exchange with this product. Our antibody concentration and clean up kits, Ab102776 and ab102778utilizes a simple spin column to easily and quickly buffers. These should work in any buffer containing PEG and are covered by our Abpromise guarantee. Which guarantees scientific support, replacement or refund should any Abcam product not perform as indicated on the datasheet. More information about Ab102776, ab102778 and our Abpromise may be found at the link below.




I hope that this information is helpful. Please let me know if you have any questions or there are other ways that Abcam may help you meet your research goals.

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