CD31 (PECAM-1) is a transmembrane glycoprotein member of the immunoglobulin supergene family of adhesion molecules. CD31 is expressed by stem cells of the hematopoietic system and is primarily used to identify and concentrate these cells for experimental studies as well as for bone marrow transplantation. Anti-CD31 has shown to be highly specific and sensitive for vascular endothelial cells. Staining of nonvascular tumors (excluding hematopoietic neoplasms) is rare. CD31 MAb reacts with normal, benign, and malignant endothelial cells which make up blood vessel lining. The level of CD31 expression can help to determine the degree of tumor angiogenesis, and a high level of CD31 expression may imply a rapidly growing tumor and potentially a predictor of tumor recurrence.
Applications
WB, IHC-P
Positive Control
THP-1, Jurkat cells. Tonsil or Angiosarcoma.
Dilutions
WB: 1-2 µg/ml, IHC: 1-2 µg/ml
Reactivity
Human
Immunogen
Recombinant fragment (around Amino Acids 625-738) of human CD31 protein. The exact sequence is proprietary.
Host
Mouse
Clonality
Monoclonal
Clone ID
PECAM1/3533
Isotype
IgG2b
Light Chains
kappa
Conjugate
Unconjugated
Purification
Protein A/G chromatography.
Concentration
200 µg/ml
Molecular Weight
~100 kDa (endothelium) / ~130 kDa (platelets)
Product Form
Liquid
Formulation
Supplied in 10mM Phosphate Buffered Saline with 0.05% BSA and 0.05% Sodium Azide.
Storage
Shipped at 4°C. Upon delivery aliquot and store at -20°C. Avoid freeze / thaw cycles.