Shc possesses SH2 and PTB domains. It serves a scaffolding function in signaling for a variety of receptor tyrosine kinases. Shc exists in p46, p52 and p66 isoforms. These isoforms are produced by using alternative translation initiation sites or a differentially spliced message. In response to extracellular signals, the SH2 and PTB domains of Shc interact with the activated receptors, leading to phosphorylation of Shc on three different tyrosine residues: Tyr239, Tyr240 and Tyr317. Grb2/Sos binds to Shc phosphorylated at these sites, activating the Ras/Raf/MAPK pathway. Both Shc expression and its tyrosine phosphorylation play an essential and nonredundant role in thymic T cell development.
Suitable for use in Western Blot. Other applications not tested.
Optimal dilutions to be determined by the researcher.
Storage and Stability:
May be stored at 4 degrees C for short-term only. Aliquot to avoid repeated freezing and thawing. Store at -20 degrees C. Aliquots are stable for at least 12 months. For maximum recovery of product, centrifuge the original vial after thawing and prior to removing the cap.