Grossmann H, Ruess K P, Liefländer M
Experientia. 1979 Dec 15;35(12):1545-6. doi: 10.1007/BF01953182.
Highly purified acetylcholinesterases from various sources do not contain hydroxyproline and hydroxylysine, indicating the absence of a collagenlike 'tail'. The enzymes examined are therefore bound to the membrane in a different way compared with acetylcholinesterase isolated from electric organ.