Buccalin is present in the cholinergic motor neuron B16 of Aplysia and it depresses accessory radula closer muscle contractions evoked by stimulation of B16

Brain Res. 1990 Mar 26;512(1):175-9. doi: 10.1016/0006-8993(90)91189-n.


The accessory radula closer (ARC) buccal muscle motor neuron B16 is buccalin-immunoreactive and it synthesizes a peptide with chromatographic properties identical to those of buccalin. Terminal varicosities in the ARC muscle are buccalin-immunoreactive, and buccalin reduces muscle contractions evoked by stimulation of neuron B16, probably by a presynaptic action.

Publication types

  • Research Support, U.S. Gov't, P.H.S.

MeSH terms

  • Animals
  • Aplysia / cytology
  • Aplysia / metabolism*
  • Cholinergic Fibers / metabolism*
  • Electric Stimulation
  • Immunohistochemistry
  • Motor Neurons / drug effects
  • Motor Neurons / metabolism*
  • Motor Neurons / physiology
  • Muscle Contraction / drug effects*
  • Muscle Contraction / physiology
  • Neuropeptides / metabolism*


  • Neuropeptides
  • buccalin