PMID-sentid Pub_year Sent_text comp_official_name comp_offsetprotein_name organism prot_offset 8155780-1 1994 A comparative study has been carried out of homologous amino acid sequences of alpha-subunits of acetylcholine receptors (AChR) and related proteins classified into three groups: (i) alpha-bungarotoxin-binding alpha-subunits of nicotine AChR from vertebrate muscles and electrical organ of the skate; (ii) alpha-bungarotoxin-binding alpha-subunits of neuronal AChR from chicken and rat brain and (iii) alpha-bungarotoxin-binding alpha-subunit of chicken brain proteins. Nicotine 228-236 cholinergic receptor nicotinic delta subunit Gallus gallus 122-126