PMID-sentid Pub_year Sent_text comp_official_name comp_offsetprotein_name organism prot_offset 11562427-4 2001 Agonist-dependent, pertussis toxin-resistant binding of guanosine 5"-O-(3-[(35)S]thio)triphosphate ([(35)S]GTP gamma S) revealed that the degree of positive efficacy of clonidine was highly dependent on the presence of a G(alpha o) protein-derived Gly amino acid as the -3 residue at the C-terminal portion of the protein. Clonidine 169-178 G protein subunit alpha o1 Homo sapiens 221-230