we found that agrin induces the formation of specializations at which at least 6 components of the postsynaptic apparatus are concentrated : one cytoplasmic component [ a 43 kda acetylcholine receptor ( achr ) -associated protein ] , 3 membrane components [ achrs and globular forms of acetylcholinesterase ( ache ) and butyrylcholinesterase ( buche ) ] , and 2 extracellular matrix-associated proteins ( a12 asymmetric ache and a heparan sulfate proteoglycan ) .
C0008429
butyrylcholinesterase
C0001044
ache