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THE FINE STRUCTURAL LOCALIZATION OF ACETYLCHOLINESTERASE AT THE MYONEURAL JUNCTION
Open accessAbstract
A study of the cytochemical localization of acetylcholiriesterase activity, combining histochemistry with electron microscopy, showed that the final product of the reaction, which was deposited at or near enzyme sites, occurred at four places in the myoneural junction. These included: plasma membrane of the muscle covering the junctional folds, the primary and secondary synaptic clefts, parts of the plasma membrane covering the axon terminal, and vesicular structures in the terminal axoplasm. No reaction occurred in the presence of 10-4 eserine or DFP, whereas 10-5 DFP inhibited the reaction at all sites except in the vesicles of the terminal axon. These findings are discussed with reference to the histochemical method used and to the occurrence of esterolytic activity in the vesicles, as well as to some of the current hypotheses concerning the relationship of the site of acetylcholinesterase and synaptic transmission.
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Cited by
THE LOCALIZATION OF CHOLINESTERASE ACTIVITY IN RAT CARDIAC MUSCLE BY ELECTRON MICROSCOPY
Karnovsky, M. J. (1964) · The Journal of Cell Biology · doi:10.1083/jcb.23.2.217 · Cited by 498
Cnidarian chemical neurotransmission, an updated overview
Kass-Simon, G., & Pierobon, P. (2007) · Comparative Biochemistry and Physiology Part A: Molecular & Integrative Physiology · doi:10.1016/j.cbpa.2006.09.008 · Cited by 150
Metadata
- Authors
- Barrnett, R. J.
- Venue
- The Journal of Cell Biology
- Publisher
- Rockefeller University Press
- Published
- 1962-02-01
- Volume
- 12
- Issue
- 2
- Pages
- 247-262
- ISSN
- 0021-9525 (ISSN-L)
- 1540-8140
- OpenAlex
- W2073113880
- Cited by
- 185
- References
- 0
- FWCI
- 23.71
- Type
- journal article
- Language
- en
- Open access
- green
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- CoChat. (2026). Citation check: THE FINE STRUCTURAL LOCALIZATION OF ACETYLCHOLINESTERASE AT THE MYONEURAL JUNCTION. https://app.cochat.ai/papers/10.1083/jcb.12.2.247
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- Barrnett, R. J. (1962). THE FINE STRUCTURAL LOCALIZATION OF ACETYLCHOLINESTERASE AT THE MYONEURAL JUNCTION. The Journal of Cell Biology. https://doi.org/10.1083/jcb.12.2.247
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