title: [Molecular forms of acetylcholinesterase in the slow muscle and the fast muscle of the chicken].
abstract: Five molecular forms of AChE are present in the slow (ALD) and twitch (PLD) muscles of the chick. These forms have 4 S, 7 S, 11 S, 15 S and 20 S sedimentation coefficient in sucrose gradient. The heaviest forms, the 20 S and 15 S of AChE are absent in uninnervated muscles and present in innervated muscles. In innervated muscles, the 20 S and 15 S AChE are present in both nerve-free segments and end-plates zones. The 20 S and 15 S which are not specifically associated with the end-plate zones in the chick could be considered as a biochemical "marker" of neuromuscular interactions.
mesh_terms: D000110:Acetylcholinesterase / Q000032:analysis*; D000818:Animals; D002642:Chick Embryo; D002645:Chickens; D008970:Molecular Weight; D009121:Muscle Denervation; D009132:Muscles / Q000196:embryology / Q000201:enzymology* / Q000294:innervation; D013997:Time Factors
chemical_list: D000110:Acetylcholinesterase
vernacular_title: Formes moléculaires d'acétylcholinestérase dans le muscle lent et le muscle rapide du poulet.