PMID-sentid Pub_year Sent_text comp_official_name comp_offsetprotein_name organism prot_offset 17905674-8 2008 Lyn also phosphorylates Y314, which recruits Csk/Ctk to phosphorylate Lyn at its Y508 negative site, allowing an inactive conformation to form. y508 81-85 C-terminal Src kinase Homo sapiens 45-48