NRG1/2:p-ERBB3:p-ERBB2:PIK3R1 Phosphorylated ERBB2:ERBB3 heterodimers Binding of PI3K subunit p85 (PIK3R1) to ERBB2:P-ERBB3 heterodimer Authored: Orlic-Milacic, M, 2011-11-04 Edited: Matthews, L, 2011-11-07 Membrane associated p85 subunit of PI3K (PIK3R1) binds to phosphorylated tyrosine residues of ERBB3 (Y1054, Y1197, Y1222, Y1224, Y1276 and Y1289) in complex with ERBB2. Pubmed17652160 Reactome Database ID Release 431250189 Reactome, http://www.reactome.org ReactomeREACT_115880 Reviewed: Neckers, LM, 2011-11-11 Reviewed: Xu, W, 2011-11-11