PMID-sentid Pub_year Sent_text comp_official_name comp_offsetprotein_name organism prot_offset 25870906-4 2015 Surprisingly, the affinity of the capsule for a series of cationic guests increases continuously with its apolar character, as shown by the significant change of the stability constant from 370 to 6500 for NH4(+) and NEt4(+), respectively. Ammonia 206-209 tetraspanin 5 Homo sapiens 217-221