Technical Data
A33 (GPA33, Glycoprotein A33 (transmembrane) Cell surface A33 antigen precursor, Glycoprotein A33, MGC129986, MGC129987)
Human A33, also known as GPA33, is a 43kD type I transmembrane glycoprotein that belongs to the CTX (cortical thymocyte marker in Xenopus) family of cell adhesion molecules within the immunoglobulin superfamily. Other family members include CXADR, ESAM, BT-IgSF, CD2 and JAM-A-C. The extracellular domain (ECD) of human A33 is 214aa in length and contains one V-type and one C2-type Ig-like domain. This ECD is 80%, 74% and 71% aa identical to canine, bovine and mouse A33 ECD, respectively. A33 is likely to be involved in cell-cell adhesion between epithelial cells.

Suitable for use in Flow Cytometry, ELISA, Western Blot and Immunohistochemistry. Other applications not tested.

Recommended Dilutions:
Flow Cytometry: 2.5ug stains 10e6 cells from the HT-29 human colon carcinoma cell line.
Western Blot: 1ug/ml
Immunohistochemistry: 8-25ug/ml stains immersion fixed paraffin-embedded section of human colon and human colon cancer tissue subjected to antigen retrieval, basic.
Optimal dilutions to be determined by the researcher.

Storage and Stability:
Lyophilized powder may be stored at -20C. Stable for 12 months at -20C. Reconstitute with sterile PBS. Aliquot to avoid repeated freezing and thawing. Store at -20C. For maximum recovery of product, centrifuge the original vial after thawing and prior to removing the cap. Further dilutions can be made in assay buffer.
MabIgG2a9H7Affinity Purified
100ug-20CBlue IceHumanRat
~0.5mg/ml (after reconstitution)
Recombinant protein corresponding to aa22-235 of human A33 expressed in NS0 cells (Q99795).
Purified by Protein G affinity chromatography.
Supplied as a lyophilized powder from PBS, pH 7.4, 5% trehalose. Reconstitute with 200ul sterile PBS.
Recognizes human A33. Does not crossreact with recombinant mouse A33.
Intended for research use only. Not for use in human, therapeutic, or diagnostic applications.