Catalogue

Background
CD39 is a transmembrane cell surface protein, which is a member of the ecto-nucleoside triphosphate diphosphohydrolase (ENTPDase) family. The CD39 molecule is primarily involved in the metabolism of purine nucleotides, converting extracellular adenosine triphosphate (ATP) and adenosine diphosphate (ADP) to adenosine monophosphate (AMP). In conjunction with CD73 (5’ nucleotidase), CD39 plays a key role in regulating immunity and inflammation through the production of adenosine and purinergic signalling pathways. In addition, CD39 is reported to mediate B cell homotypic adhesion and inhibit ADP-induced platelet aggregation. CD39 was originally identified on Epstein Barr virus transformed B cell lines and described as a B-cell activation marker. However, subsequent studies have shown that CD39 is also expressed on activated T-cells, T-regulatory cells, natural killer cells, tissue macrophages and endothelial cells. Increased expression of CD39 has also been reported in cases of chronic lymphocytic leukaemia and several solid tumours including colorectal and pancreatic cancer suggesting a potential role for CD39 in tumour development and progression.

Source
R22 is a rat monoclonal IgG1 antibody derived by fusion of SP2/0 mouse myeloma cells with splenocytes from a WAG/Rij rat immunized with JY cells, a human B lymphoblastoid cell line.

Product
Each vial contains 100µl 1mg/ml purified monoclonal antibody in phosphate buffered saline (PBS) containing 0.09% sodium azide.

Formulation: Each vial contains 100µl 1mg/ml purified monoclonal antibody in phosphate buffered saline (PBS) containing 0.09% sodium azide.

Specificity
The antibody R22 is directed against human CD39. The antibody has not been tested for cross reactivity with other species.

Applications
The R22 antibody is suitable for the detection of human CD39 antigen by flow cytometry. Human spleen is suitable as a positive control. Optimal antibody dilutions for the different applications should be determined by titration.

Storage
The antibody is shipped at ambient temperature and may be stored at +4°C. For prolonged storage prepare appropriate aliquots and store at or below -20°C. Prior to use, an aliquot is thawed slowly in the dark at ambient temperature, spun down again and used to prepare working dilutions by adding sterile phosphate buffered saline (PBS, pH 7.2). Repeated thawing and freezing should be avoided. Working dilutions should be stored at +4°C, not refrozen, and preferably used the same day. If a slight precipitation occurs upon storage, this should be removed by centrifugation. It will not affect the performance or the concentration of the product.

Caution
This product is intended FOR RESEARCH USE ONLY, and FOR TESTS IN VITRO, not for use in diagnostic or therapeutic procedures involving humans or animals. It may contain hazardous ingredients. Please refer to the Safety Data Sheets (SDS) for additional information and proper handling procedures. Dispose product remainders according to local regulations.This datasheet is as accurate as reasonably achievable, but our company accepts no liability for any inaccuracies or omissions in this information.

References
1. Kansas GS, Wood GS, Tedder TF. (1991). Expression, distribution and biochemistry of CD39. J Immunol. 146:2235–2244.

Protein Reference(s)

Database Name: UniProt

Accession Number: UniProt: P49961

Safety Datasheet(s) for this product: