PMID-sentid Pub_year Sent_text comp_official_name comp_offsetprotein_name organism prot_offset 18511169-6 2008 Specific ATM inhibitor, caffeine, significantly decreased KTA-mediated G2/M arrest by inhibiting the phosphorylation of p53 (Serine15) and Chk2. Caffeine 24-32 tumor protein p53 Homo sapiens 120-123