CUB domain containing protein 1 (CDCP1), also known as SIMA135, is a 140kD type I transmembrane glycoprotein with three CUB protein-protein interaction domains in its 635aa extracellular region. The 148aa cytoplasmic region contains canonical phosphorylation sites for Src kinase family members and binding sites for SH3 domains. By alternative splicing, a secreted 310 aa residue form of CDCP1 also exists. The amino-terminal region of approximately 265aa of the type I membrane CDCP1 can also be proteolytically cleaved. CDCP1 is found on the surface of epithelial and bone marrow-derived stem cells. The extracellular region of human CDCP1 shares 84% aa identity with that of the mouse protein.
Applications:
Suitable for use in Direct ELISA and Western Blot. Other applications not tested.
Recommended Dilutions:
Direct ELISA: 0.5-1.0ug/ml. The detection limit is ~3ng/well.
Western Blot: 1-2ug/ml. Using a colormetric detection system, the detection limit is ~50ng/lane under non-reducing and reducing conditions. Chemiluminscent detection will increase sensitivity by 5 to 50 fold.
Optimal dilutions to be determined by the researcher.
Storage and Stability:
Lyophilized powder may be stored at -20 degrees C. Stable for 12 months at -20 degrees C. Reconstitute with sterile PBS. Aliquot to avoid repeated freezing and thawing. Store at -20 degrees C. Reconstituted product is stable for 12 months at -20 degrees C. 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.