• Product name
  • Description
    Rabbit polyclonal to Syntenin
  • Host species
  • Tested applications
    Suitable for: IHC-P, IHC-FoFr, ICC/IF, WBmore details
  • Species reactivity
    Reacts with: Mouse, Rat, Human, Xenopus laevis
    Predicted to work with: Monkey, Zebrafish
  • Immunogen

    Synthetic peptide conjugated to KLH derived from within residues 250 to the C-terminus of Mouse Syntenin.

  • Positive control
    • HEK 293 cells, human, rat and mouse heart lysate



Our Abpromise guarantee covers the use of ab19903 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
IHC-P 1/100. Perform heat mediated antigen retrieval before commencing with IHC staining protocol.
IHC-FoFr 1/1000.
ICC/IF Use a concentration of 1 µg/ml.
WB Use a concentration of 1 µg/ml. Detects a band of approximately 32 kDa (predicted molecular weight: 32 kDa).


  • Function
    Seems to function as an adapter protein. In adherens junctions may function to couple syndecans to cytoskeletal proteins or signaling components. Seems to couple transcription factor SOX4 to the IL-5 receptor (IL5RA). May also play a role in vesicular trafficking. Seems to be required for the targeting of TGFA to the cell surface in the early secretory pathway.
  • Tissue specificity
    Widely expressed. Expressed in fetal kidney, liver, lung and brain. In adult highest expression in heart and placenta.
  • Sequence similarities
    Contains 2 PDZ (DHR) domains.
  • Post-translational
    Phosphorylated on tyrosine residues.
  • Cellular localization
    Cell junction > focal adhesion. Cell junction > adherens junction. Cell membrane. Endoplasmic reticulum membrane. Nucleus. Melanosome. Cytoplasm > cytosol. Cytoplasm > cytoskeleton. Mainly membrane-associated. Localized to adherens junctions, focal adhesions and endoplasmic reticulum. Colocalized with actin stress fibers. Also found in the nucleus. Identified by mass spectrometry in melanosome fractions from stage I to stage IV.
  • Information by UniProt
  • Database links
  • Alternative names
    • MDA-9 antibody
    • MDA9 antibody
    • Melanoma differentiation-associated protein 9 antibody
    • Pro-TGF-alpha cytoplasmic domain-interacting protein 18 antibody
    • Scaffold protein Pbp1 antibody
    • SDCB1_HUMAN antibody
    • SDCBP antibody
    • ST1 antibody
    • SYCL antibody
    • Syndecan binding protein (syntenin) antibody
    • Syndecan binding protein 1 antibody
    • Syndecan-binding protein 1 antibody
    • Syntenin 1 antibody
    • Syntenin-1 antibody
    • TACIP18 antibody
    see all


  • Lane 1: Wild-type HAP1 whole cell lysate (20 µg)
    Lane 2: Syntenin knockout HAP1 whole cell lysate (20 µg)
    Lane 3: A549 whole cell lysate (20 µg)
    Lane 4: HeLa whole cell lysate (20 µg)

    Lanes 1-4: Merged signal (red and green). Green - ab19903 observed at 32 kDa. Red - loading control, ab130007, observed at 130 kDa.

    ab19903 was shown to recognize Syntenin in wild-type HAP1 cells as signal was lost at the expected MW in Syntenin knockout cells. Additional cross-reactive bands were observed in the wild-type and knockout cells. Wild-type and Syntenin knockout samples were subjected to SDS-PAGE. ab19903 and ab130007 (Mouse anti-Vinculin loading control) were incubated overnight at 4°C at 1 μg/ml and 1/20000 dilution respectively. Blots were developed with Goat anti-Rabbit IgG H&L (IRDye® 800CW) preabsorbed ab216773 and Goat anti-Mouse IgG H&L (IRDye® 680RD) preabsorbed ab216776 secondary antibodies at 1/20000 dilution for 1 hour at room temperature before imaging.

  • All lanes : Anti-Syntenin antibody (ab19903) at 1 µg/ml

    Lane 1 : Mouse heart lysate
    Lane 2 : Rat heart lysate
    Lane 3 : Mouse heart lysate with Mouse Syntenin peptide (ab20431) at 1 µg/ml
    Lane 4 : Rat heart lysate with Mouse Syntenin peptide (ab20431) at 1 µg/ml

    Lysates/proteins at 20 µg per lane.

    All lanes : Goat Anti-Rabbit IgG H&L (HRP) (ab6721) at 1/50000 dilution

    Predicted band size: 32 kDa
    Observed band size: 32 kDa
    Additional bands at: 50 kDa. We are unsure as to the identity of these extra bands.

    ab19903 detects a band of the expected size (32kDa) in both mouse and rat heart lysate. This band is quenched completely by the addition of the immunizing peptide in the mouse lysate and is partially quenched by the addition of ab20431 in the rat heart lysate.
  • ICC/IF image of ab19903 stained human HEK 293 cells. The cells were PFA fixed (10 min), permabilised in TBS-T (20 min) and incubated with the antibody (ab19903, 1µg/ml) for 1h at room temperature. 1%BSA / 10% normal goat serum / 0.3M glycine was used to quench autofluorescence and block non-specific protein-protein interactions. The secondary antibody (green) was Alexa Fluor® 488 goat anti-rabbit IgG (H+L) used at a 1/1000 dilution for 1h. Alexa Fluor® 594 WGA was used to label plasma membranes (red). DAPI was used to stain the cell nuclei (blue).

  • Image courtesy of Human Protein Atlas
    ab19903 staining Syntenin in human heart tissue. Paraffin-embedded tissue was cut into 4µm sections and incubated with ab19903 (1/100 dilution) for 30 minutes at room temperature. Antigen retrieval was performed by heat induction in citrate buffer pH 6. ab19903 was tested in a tissue microarray (TMA) containing a wide range of normal and cancer tissues as well as a cell microarray consisting of a range of commonly used, well characterised human cell lines. Further results for this antibody can be found at www.proteinatlas.org
  • IHC-FoFr image of Syntenin staining using ab19903 (1:1000) on Mouse cortex (A) and mouse paraventricular nucleus (B). The sections used came from animals perfused fixed with Paraformaldehyde 4% with 15% of a solution of saturated picric acid, in phosphate buffer 0.1M. Following postfixation in the same fixative overnight, the brains were cryoprotected in sucrose 30% overnight. Brains were then cut using a cryostat and the immunostainings were performed using the ‘free floating’ technique.

    See Abreview


This product has been referenced in:
  • Verweij FJ  et al. Quantifying exosome secretion from single cells reveals a modulatory role for GPCR signaling. J Cell Biol 217:1129-1142 (2018). Read more (PubMed: 29339438) »
  • Obata Y  et al. Adiponectin/T-cadherin system enhances exosome biogenesis and decreases cellular ceramides by exosomal release. JCI Insight 3:N/A (2018). Read more (PubMed: 29669945) »

See all 7 Publications for this product

Customer reviews and Q&As

Rat Cultured Cells (Hippocampus)
Yes - PBS with Triton 0.25%
Blocking step
BSA as blocking agent for 30 minute(s) · Concentration: 3% · Temperature: 20°C

Luis Martins

Verified customer

Submitted May 31 2017

Thank you for you reply.

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Abcam guarantees this product to work in the species/application used in this Abreview.
Immunohistochemistry (PFA perfusion fixed frozen sections)
Mouse Tissue sections (Brain)

Dr. Sophie Pezet

Verified customer

Submitted May 04 2011

Abcam guarantees this product to work in the species/application used in this Abreview.
Immunocytochemistry/ Immunofluorescence
Xenopus laevis Cell (meiotic egg extract)
meiotic egg extract
pre-fixation in formaldehyde and Methanol fixation after extract spindown onto coverslips
Blocking step
BSA as blocking agent for 1 hour(s) and 0 minute(s) · Concentration: 3% · Temperature: 25°C

Abcam user community

Verified customer

Submitted Mar 03 2010

Abcam guarantees this product to work in the species/application used in this Abreview.
Western blot
Xenopus laevis Cell lysate - other (meiotic egg extract)
Loading amount
25 µg
meiotic egg extract
Gel Running Conditions
Reduced Denaturing (10%)
Blocking step
Milk as blocking agent for 1 hour(s) and 0 minute(s) · Concentration: 5% · Temperature: 25°C

Abcam user community

Verified customer

Submitted Mar 03 2010


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