PIK3R1:p-ERBB4cyt1 p-ERBB4cyt1 homodimers Binding of p85 subunit of PI3K (PIK3R1) to p-ERBB4cyt1 homodimers Authored: Orlic-Milacic, M, 2011-11-04 Edited: Matthews, L, 2011-11-07 Pubmed18721752 Pubmed8617750 Reactome Database ID Release 431250353 Reactome, http://www.reactome.org ReactomeREACT_115722 Reviewed: Earp HS, 3rd, 2012-02-20 Reviewed: Harris, RC, 2011-11-11 Reviewed: Misior, AM, 2012-02-20 Reviewed: Zeng, F, 2011-11-11 p85 subunit of PI3K (PIK3R1) directly binds to phosphorylated ERBB4 CYT1 homodimers through docking tyrosine residues on either ERBB4 JM A CYT1 (tyrosine Y1056) or ERBB4 JM B CYT1 (tyrosine Y1046) isoform.