CD44 (E7K2Y) XP® Rabbit mAb (Alexa Fluor® 488 Conjugate) #97962
- IHC
Supporting Data
| REACTIVITY | H M R |
| SENSITIVITY | Endogenous |
| MW (kDa) | |
| Source/Isotype | Rabbit IgG |
Application Key:
- IHC-Immunohistochemistry
Species Cross-Reactivity Key:
- H-Human
- M-Mouse
- R-Rat
Product Information
Product Description
Product Usage Information
| Application | Dilution |
|---|---|
| Immunohistochemistry (Paraffin) | 1:50 - 1:200 |
Storage
Protocol
Specificity / Sensitivity
CD44 (E7K2Y) XP® Rabbit mAb (Alexa Fluor® 488 Conjugate) recognizes endogenous levels of total CD44 protein.
Species Reactivity:
Human, Mouse, Rat
Source / Purification
Monoclonal antibody is produced by immunizing animals with a synthetic peptide corresponding to residues surrounding Pro136 of human CD44 protein. This sequence region is conserved in all isoforms of CD44 reported in Uniprot, with the exception of isoform 2 and isoform 19.
Background
CD44 is a type I transmembrane glycoprotein that mediates cell-cell and cell-matrix interaction through its affinity for hyaluronic acid (HA) and possibly through other parts of the extracellular matrix (ECM). CD44 is highly polymorphic, possesses a number of alternative splice variants and undergoes extensive post-translational modifications (1,2). Increased surface levels of CD44 are characteristic of T cell activation, and expression of the protein is upregulated during the inflammatory response. Research studies have shown that interactions between CD44 and HER2 are linked to an increase in ovarian carcinoma cell growth (1-3). CD44 interacts with ezrin, radixin, and moesin (ERM), linking the actin cytoskeleton to the plasma membrane and the ECM (4-6). CD44 is constitutively phosphorylated at Ser325 in resting cells. Activation of PKC results in phosphorylation of Ser291, dephosphorylation of Ser325, disassociation of ezrin from CD44, and directional motility (4).
- Goodison, S. et al. (1999) Mol. Pathol. 52, 189-196.
- Cichy, J. and Puré, E. (2003) J. Cell Biol. 161, 839-843.
- Bourguignon, L.Y. et al. (1997) J. Biol. Chem. 272, 27913-27918.
- Legg, J.W. et al. (2002) Nat. Cell Biol. 4, 399-407.
- Yonemura, S. et al. (1998) J. Cell Biol. 140, 885-895.
- Tsukita, S. et al. (1994) J. Cell Biol. 126, 391-401.
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