PMID-sentid Pub_year Sent_text comp_official_name comp_offsetprotein_name organism prot_offset 10461217-6 1999 The second, previously undescribed, acetylcholine receptor was activated by nicotine, desensitized rapidly and was selectively blocked by dihydro-beta-erythroidine, thus explaining the residual motility of unc-38 and unc-29 mutants. Nicotine 76-84 Betaine receptor acr-23 Caenorhabditis elegans 36-58