Polyclonal antibody to TRAF-2

This antibody recognizes TRAF2, which is a member of TRAF (TNF receptor-associated factor) adapter proteins composed 501 amino acids. It Links TNFRs (TNF Receptors) to the SAPKs (Stress-Activated Protein Kinases) and p38s. TRAF2 can activate ASK1 (Apoptosis Signal-Regulating Kinase-1) in vivo and can interact in vivo with the amino- and carboxyl-terminal noncatalytic domains of the ASK1 polypeptide. Expression of the amino-terminal noncatalytic domain of ASK1 can inhibit TNF and TRAF2 activation of SAPK. TRAF2 is a potential mediator of CD40 signaling. In vitro, TRAF2 and TRAF3 bind to the CD40 Cytoplasmic Tail (CD40CT) with much higher affinity than TRAF5 and TRAF6 (TNF Receptor Associated Factor-6) and that TRAF2 and TRAF3 bind to different residues of the CD40CT. The TRAF2-binding site of the CD40CT is critical for NF-KappaB and SAPK activation, as well as the UP-regulation of the ICAM1 (Intercellular Adhesion Molecule-1).