HER3, a pivotal tyrosine-protein kinase, acts as a crucial cell receptor for neuregulins. Neuregulin-1 (NRG1) activation boosts tyrosine phosphorylation and interaction with p85 subunit of phosphatidylinositol 3-kinase. CSPG5 may also activate HER3. Its involvement in myeloid cell differentiation underscores HER3s vital role in essential cellular processes for normal development and function. HER3 Protein, Rhesus Macaque (HEK293) is the recombinant Rhesus Macaque-derived HER3 protein, expressed by HEK293 , with tag free.