PMID-sentid Pub_year Sent_text comp_official_name comp_offsetprotein_name organism prot_offset 20546883-5 2010 The location of groups on the pyridine ring also influences passive transport into the brain; the optimum position of the oxime group was found to be position four (para) and substitution of the oxime group on the pyridine ring by carbamoyl or amidoxime group markedly decreased penetration of AChE reactivators into the CNS. pyridine 30-38 acetylcholinesterase (Cartwright blood group) Homo sapiens 294-298