Cholinesterase activity in the tube foot ampullae of the starfish asterias amurensis

Semenova, M.H.

Zhurnal Evolyutsionnoi Biokhimii i Fiziologii 24(5): 765-768

1988


Accession: 007111594

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Abstract
The activity of cholinesterase was determined using modified Ellman's procedure. It was found that the ampullae contain the enzyme which is similar in its substrate-inhibitory specificity to acetylcholinesterase of vertebrates. The presence of acetylcholinesterase and N-cholinoreceptors (data from literature) in the ampullar walls suggests that non-synaptic cholinergic system is involved in the control of contractile activity of these nerve-free smooth muscle organs.