PMID-sentid Pub_year Sent_text comp_official_name comp_offsetprotein_name organism prot_offset 12565831-5 2003 One of them, the cytoplasmic poly(A)-binding protein PABP1, co-migrated with a protein that showed prominent phosphorylation by recombinant MK2. Poly A 29-36 MAPK activated protein kinase 2 Homo sapiens 140-143 12565831-6 2003 Phosphorylation by MK2 was confirmed using PABP1 purified by affinity chromatography on poly(A) RNA. Poly A 88-95 MAPK activated protein kinase 2 Homo sapiens 19-22