we report the existence , in torpedo marmorata tissues , of a cholinesterase species ( sensitive to 10 ( -5 ) m eserine ) that differs from acetylcholinesterase ( ache , ec 3.1.1.7 ) in several respects : ( a ) the enzyme hydrolyzes butyrylthiocholine ( busch ) at about 30 % of the rate at which it hydrolyzes acetylthiocholine ( acsch ) , whereas torpedo ache does not show any activity on busch .
C0008429
cholinesterase
C0001044
acetylcholinesterase