[Localization, kinetic parameters, and functions of cholinesterase of the starfish ampulla].
The starfish amplullae cholinesterase was shown to represent acetylcholinesterase and enhance its activity along with increasing motility of the starfish. Bundles of muscle fibres containing cholinesterase were found in the ampullae. Cholinesterase was shown to be localized in the muscle cells and in collagen layer in vicinity of the muscle cells. The data obtained suggest participation of the starfish ampullae cholinesterase in non-synaptic cholinergic transmission between the radial nerve axons and the muscle fibre extension. Besides, the enzyme could take part in functional relationship between the muscle cells and the outer epithelial cells of the starfish ampullae.
Semenova
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MN
N. K. Koltsov Institute of Developmental Biology of the Russian Acad. Sci., 117808, Moscow, Vavilov St., 26, Russia.
D000110:Acetylcholinesterase / Q000378:metabolism / Q000502:physiology*; D000818:Animals; D006868:Hydrolysis; D007700:Kinetics; D008854:Microscopy, Electron; D009130:Muscle, Smooth / Q000201:enzymology / Q000648:ultrastructure; D013215:Starfish / Q000378:metabolism* / Q000648:ultrastructure
D000110:Acetylcholinesterase
Lokalizatsiia, kineticheskie parametry i funktsional'naia rol' kholinésterazy ampul morskikh zvezd.