Robuta

https://www.ncbi.nlm.nih.gov/Structure/pdb/8Q1M
Soluble acetylcholine receptor2-acetamido-2-deoxy-beta-D-glucopyranoseCHLORIDE IONSpiroimine (+)-4 Ralpha-D-mannopyranosebeta-D-mannopyranose
aplysia californicabinding proteinacetylcholinecomplex