Anti-Extracellular matrix protein 1 antibody [SPM217] (ab17921)


  • Product nameAnti-Extracellular matrix protein 1 antibody [SPM217]
    See all Extracellular matrix protein 1 primary antibodies
  • Description
    Mouse monoclonal [SPM217] to Extracellular matrix protein 1
  • Specificityab17921 reacts with a reduction-resistant epitope present in both free and SIgA bound Secretory Component. It does not react with the cell lines lacking secretory component. The antibody is useful for studying the distribution and level of both free and bound secretory component. Secretory component is differentially expressed in epithelium, and the antibody is a popular marker for identifying subpopulations of epithelial cells and epithelial differentiation. The Secretory component antibody is a useful research tool for studying mucosal immunity, inflammation, remodeling, differentiation and tumorigenesis, all processes associated with differential secretory component expression.
  • Tested applicationsSuitable for: ICC/IF, IHC-Pmore details
  • Species reactivity
    Reacts with: Human
    Predicted to work with: Rat
  • Immunogen

    Full length native protein (purified) corresponding to Human Secretory Component Glycoprotein. Secretory Component protein isolated from human colostrum.

  • EpitopeNot determined
  • Positive control
    • Stomach, Lung, or breast tumor.



Our Abpromise guarantee covers the use of ab17921 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
ICC/IF Use a concentration of 1 - 2 µg/ml.
IHC-P 1/50. Perform enzymatic antigen retrieval before commencing with IHC staining protocol.


  • FunctionInvolved in endochondral bone formation as negative regulator of bone mineralization. Stimulates the proliferation of endothelial cells and promotes angiogenesis. Inhibits MMP9 proteolytic activity.
  • Tissue specificityExpressed in breast cancer tissues. Little or no expression observed in normal breast tissues. Expressed in skin; wide expression is observed throughout the dermis with minimal expression in the epidermis.
  • Involvement in diseaseDefects in ECM1 are the cause of lipoid proteinosis (LiP) [MIM:247100]; also known as lipoid proteinosis of Urbach and Wiethe or hyalinosis cutis et mucosae. LiP is a rare autosomal recessive disorder characterized by generalized thickening of skin, mucosae and certain viscera. Classical features include beaded eyelid papules and laryngeal infiltration leading to hoarseness. Histologically, there is widespread deposition of hyaline material and disruption/reduplication of basement membrane.
  • Cellular localizationSecreted > extracellular space > extracellular matrix.
  • Information by UniProt
  • Database links
  • Alternative names
    • ECM 1 antibody
    • Ecm1 antibody
    • ECM1_HUMAN antibody
    • Extracellular matrix protein 1 antibody
    • Secretory component p85 antibody
    • URBWD antibody
    see all

Anti-Extracellular matrix protein 1 antibody [SPM217] images

  • Human colon carcinoma stained with ab17921.

References for Anti-Extracellular matrix protein 1 antibody [SPM217] (ab17921)

ab17921 has not yet been referenced specifically in any publications.

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