PMID-sentid Pub_year Sent_text comp_official_name comp_offsetprotein_name organism prot_offset 3106961-10 1987 There are also marked similarities of sequence in regions of the G proteins, elongation factors, and the ras p21 gene products that are believed to be involved in guanine nucleotide binding and GTP hydrolysis. Guanine Nucleotides 163-181 cyclin dependent kinase inhibitor 1A Bos taurus 109-112