PMID-sentid Pub_year Sent_text comp_official_name comp_offsetprotein_name organism prot_offset 11591756-1 2001 Clustering the tetrameric (alphabetagamma(2)) IgE receptor, FcepsilonRI, on basophils and mast cells activates the Src-family tyrosine kinase, Lyn, which phosphorylates FcepsilonRI beta and gamma subunit tyrosines, creating binding sites for the recruitment and activation of Syk. Tyrosine 204-213 membrane spanning 4-domains A1 Homo sapiens 169-185