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PAG1 Mouse anti-Bovine, Human, Mouse, Rat, Clone: PAG-C1, Invitrogen™

Mouse Monoclonal Antibody

Manufacturer:  Invitrogen MA119287

Catalog No. 01-676-043

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This antibody recognizes an epitope located in the C-terminal domain of Csk-binding protein, a 46 kDa ubiquitously expressed transmembrane adaptor protein which however migrates on SDS PAGE gels anomalously as an 80 kDa molecule. A suggested positive control for Immunoprecipitation is RAJI human burkitt lymphoma cell line. A suggested positive control for immunohistochemistry is appendix (germinal center of lymphatic follicle). For IHC staining, heat-mediated antigen retrieval in citrate buffer, pH 6.1, is recommended.

PAG (phosphoprotein associated with GEMs), also known as Cbp (Csk-binding protein), is a ubiquitously expressed 46 kDa transmembrane adaptor protein present in membrane rafts (glycosphingolipid-enriched microdomains), which however migrates on SDS PAGE gels anomalously as an 80 kDa molecule. Following tyrosine phosphorylation by Src family kinases, PAG binds and thereby activates the protein tyrosine kinase Csk, the major negative regulator of the Src family kinases. Signaling via the B-cell receptor in B cells or high affinity IgE receptor (FcepsilonRI) in mast cells leads to PAG increased tyrosine phosphorylation and Csk binding, while T cell receptor signaling causes PAG dephosphorylation, loss of Csk binding and increased activation of the protein tyrosine kinase Lck.


1 mg/mL
PBS with 15mM sodium azide; pH 7.4
Q29432, Q9NWQ8, Q3U1F9, Q9JM80
100 μg
4° C, do not freeze
281964, 55824, 64019, 94212
Immunohistochemistry (Paraffin), Immunoprecipitation, Western Blot
C-terminal peptide (last 15 amino acids) of human Csk binding protein coupled to KLH
Protein A
Bovine, Human, Mouse, Rat
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