A33 Proteins, Antibodies, cDNA Clones Research Reagents

All A33 reagents are produced in house and quality controlled, including 8 A33 Antibody, 26 A33 Gene, 2 A33 Lysate, 2 A33 Protein, 2 A33 qPCR. All A33 reagents are ready to use.

A33 Protein (2)

    A33 Antibody (8)

      A33 cDNA Clone (26)


      A33 Lysate (2)

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        A33 Background

        Cell surface A33 antigen, also known as glycoprotein A33, is a single-pass type I membrane protein which is expressed in normal gastrointestinal epithelium and in 95% of colon cancers. GPA33 contains oneIg-like C2-type (immunoglobulin-like) domain and oneIg-like V-type (immunoglobulin-like) domain. The open reading frame encodes a 319-amino acid polypeptide having a putative secretory signal sequence and 3 potential glycosylation sites. The predicted mature protein has a 213-amino acid extracellular region, a single transmembrane domain, and a 62-amino acid intracellular tail. Intracellular traffic and recycling to the cell surface appear to play a major role in GPA33 function and to have an influence on its surface density superseding translational regulation. GPA33 has become a promising target of immunologic therapy strategies, but its biologic function and potential role in tumorigenesis are unknown. EpCAM protein and GPA33 mRNA expressions are specific and sensitive markers of Barrett's metaplasia (BM). GPA33 may also play a role in cell-cell recognition and signaling.

        A33 References

        • Heath J.K., et al., 1997, Proc. Natl. Acad. Sci. USA. 94:469-74.
        • Ritter G., et al., 1997, Biochem. Biophys. Res. Commun. 236:682-6.
        • Frey,D. et al., 2008, Cancer Biother Radiopharm  23 (1):65-73.
        • Rageul,J. et al., 2009, Int J Cancer 125 (12):2802-9. 

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