PMID-sentid Pub_year Sent_text comp_official_name comp_offsetprotein_name organism prot_offset 9443940-2 1998 The beta 2AR mutant with Ala substituted for Ser204 (S204A) significantly decreased the affinities for TA-2005, des-8-hydroxy-TA-2005 derivative (compound I), and isoproterenol. Tantalum 103-105 adrenoceptor beta 2 Homo sapiens 4-12