Dimerization of the epithelial growth factor (EGF) family of receptor tyrosine kinases is a crucial step for activation of these receptors. Different chemicals such as BS3 and DSS have been introduced to covalently bind the interacting receptors and fix the dimers. Unique properties of BS3 including higher water solubility and membrane impermeability make it suitable for assessing receptor-receptor interactions in live cells. In this protocol, we aim to explain a method to evaluate the dimerization of EGF receptors family using BS3 as a cross-linker reagent.
Keywords: BS3; Dimerization; EGF receptor family; Immunoblotting.