Immunogen DescriptionA synthetic peptide corresponding to a sequence at the C-terminus of human CD44 cytoplasmic domain aa 728-742. The immunogen differs by only single amino acid between human, mouse and rat proteins.
Application DetailsWB: Western blot: reduced RIPA samples or membrane preparations (0.1-.5 µg/mL) dependent upon antigen load and antibody incubation times and detection substrate used.
IH: frozen or acetone fixed tissue: 0.5-1.0 ug.mL, permeabilization is necessary as epitope is internal IH(P): 1-2 µg/mL with HEIR treatment required.
TargetPhagocytic glycoprotein 1 (PGP-1, CD44)
SpecificityHuman CD44
Target Host SpeciesHuman
Species ReactivityHuman
Antibody HostRabbit
Antibody TypePolyclonal
Antibody IsotypeIgG
ConjugateUnconjugated
Immunogen DescriptionA synthetic peptide corresponding to a sequence at the C-terminus of human CD44 cytoplasmic domain aa 728-742. The immunogen differs by only single amino acid between human, mouse and rat proteins.
SequenceDETRNLQNVDMKIGV
Purity DescriptionAffinity purified over peptide
Formatlyophilized.
Reconstitution InstructionsSpin vial briefly before opening. Reconstitute vial in 0.2 mL sterile-filtered, ultrapure water. This will produce a final concentration of 500 µg/mL of antibody. Centrifuge to remove any insoluble material.
Storage InstructionsAt -20°C for one year. After reconstitution, at 2-8°C for one month. It can also be divided into aliquots and stored frozen at -80°C for a longer time. Avoid repeated freezing and thawing.
Batch NumberPlease see item label.
Expiration Date12 months after date of receipt (unopened vial).
Scientific BackgroundThe protein identified as CD44 is also known as the receptor for hyaluronic acid (HA). The protein mediates cell-cell and cell-matrix interactions through its affinity for HA, and possibly also through its affinity for other ligands such as osteopontin, collagens, and matrix metalloproteinases (MMPs). Adhesion with HA plays an important role in cell migration, tumor growth and progression. In cancer cells, CD44 may play an important role in invadopodia formation, and it also is involved in lymphocyte activation, recirculation and homing, and in hematopoiesis. Altered expression or dysfunction of CD44 causes numerous pathogenic phenotypes. CD44 has great protein heterogeneity due to numerous alternative splicing and post-translational modification events. Biosensis' anti-CD44 rabbit polyclonal antibody is a new antibody made against a synthetic peptide epitope near the very C-terminus, cytoplasmic domain of human CD44. The antibody has been shown to react with multiple species including human, mouse and rat, in both western blot and immunohistochemistry applications including formalin fixed, paraffin embedded tissues. See applications detail for specific use instructions.