PMID-sentid Pub_year Sent_text comp_official_name comp_offsetprotein_name organism prot_offset 2199064-6 1990 Gln-61 in cellular p21 adopts a conformation where it is able to catalyze GTP hydrolysis. Guanosine Triphosphate 74-77 H3 histone pseudogene 16 Homo sapiens 19-22