PMID-sentid Pub_year Sent_text comp_official_name comp_offsetprotein_name organism prot_offset 11133809-1 2000 In human fibroblasts, N:-phosphoacetyl-L-aspartate (PALA) and gamma-radiation induce reversible and irreversible p53-mediated G(1) cell cycle arrest, respectively. Nitrogen 22-23 tumor protein p53 Homo sapiens 113-116