CD44 (Extracellular region) Antibody

Product Specifications

Background

Cell surface adhesion protein CD44 is a ubiquitously expressed type I transmembrane protein that has important functions related to cell-cell adhesion and extracellular matrix interactions. The transmembrane protein is post-translationally modified at multiple sites by glycosylation and phosphorylation. CD44 ligands include hyaluronic acid, collagens, laminins, osteopontin, serglycin, and fibronectin. CD44 has been implicated in inflammatory cell functions as well as in tumor growth and metastasis. CD44 is overexpressed in many types of cancer; the interaction between CD44 and HER2 has been linked to an increase in ovarian carcinoma cell growth. CD44 interacts with ezrin, radixin, and moesin to link the actin cytoskeleton to the plasma membrane and the extracellular matrix. These interactions are critical for CD44 function in cell-cell adhesion and cell motility.

Synonyms

Epican, ECMR-III, PGP-1, LHR, MDU2, MDU3, MIC4 Heparan sulfate proteoglycan HUTCH-I GP90, CD44

Swiss Prot

P16070

Host

Mouse

Cross Reactivity

Human

Target

CD44 (Extracellular region)

Clonality

Monoclonal

Isotype

IgG1

Clone

M007

Conjugation

Unconjugated

Source

Clone M007 was generated from a proprietary antigen related to the extracellular region of human CD44 from the A431 epidermoid carcinoma cell line..

Applications

WB, IP

Purification

Purified by Protein G.

Dilution

WB (1:300-5000), IP (1-2ug)

Buffer

PBS + 1 mg/ml BSA, 0.05% NaN3 and 50% glycerol

Modification

Unmodified

Storage Conditions

Storage at -20°C is recommended, as aliquots may be taken without freeze/thawing due to presence of 50% glycerol. Stable for at least 1 year at -20°C.

Specificity

Clone M007 detects 80-130 kDa* bands corresponding to the molecular mass of CD44 on SDS-PAGE immunoblots of native and denaturing human MDA-MB-231, A549, and A431 cell lysates. The antibody can be used for multiple applications including ELISA, western blot, immunocytochemical labeling and immunoprecipitation. In addition, the antibody labels live unfixed A549 and MeWo cells, so the antibody may be useful for isolating CD44+ cells and for CD44 functional assays.