
Y011510 by MBP is a rabbit polyclonal antibody detecting HER3 (ErbB3; ERBB3) phosphorylated at Tyrosine 1328, a C-terminal PI3K p85 docking site generated by NRG1-stimulated HER2-mediated transphosphorylation. A key marker of HER2:HER3 heterodimer-driven PI3K–AKT signalling in breast and other HER2/HER3-expressing cancers. MW ~185 kDa. WB, IHC, IF, ELISA. Human. Research Use Only.