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  Cholinergic vesicle specific proteoglycan: Stability in isolated vesicles and in synaptosomes during induced transmitter release.

Kuhn, D. M., Volknandt, W., Stadler, H., & Zimmermann, H. (1988). Cholinergic vesicle specific proteoglycan: Stability in isolated vesicles and in synaptosomes during induced transmitter release. Journal of Neurochemistry, 50(1), 11-16. doi:10.1111/j.1471-4159.1988.tb13223.x.

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Item Permalink: http://hdl.handle.net/11858/00-001M-0000-002D-F3CB-E Version Permalink: http://hdl.handle.net/11858/00-001M-0000-002D-F3CD-A
Genre: Journal Article

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 Creators:
Kuhn, D. M., Author
Volknandt, W., Author
Stadler, H.1, Author              
Zimmermann, H., Author
Affiliations:
1Abteilung Neurochemie, MPI for biophysical chemistry, Max Planck Society, ou_578555              

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 Abstract: Exposure of synaptosomes isolated from the electric organ of Torpedo marmorata to conditions that promote the release of acetylcholine does not cause the co-release of a vesicle specific proteoglycan. Proteoglycan within synaptosomes is quite stable during various incubation conditions as measured by immune dot blotting. Isolated vesicles from Torpedo also retain their proteoglycan immunoreactivity when exposed to a variety of incubation conditions. Lysis of vesicles in H2O, treatment with pH 11.5 buffer, or exposure to high ionic strength (2 M KCl) results in the loss of acetylcholine or ATP while the proteoglycan is retained by vesicle membranes. Only treatment with Nonidet P-40 releases proteoglycan from vesicles or synaptosomes and free proteoglycan immunoreactivity is then susceptible to degradation by trypsin or heparinase. These results suggest that the proteoglycan is an integral component of vesicle membranes and is at least in the synaptosomal preparation not subject to extensive co-release with acetylcholine or ATP.

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Language(s): eng - English
 Dates: 1988-01
 Publication Status: Published in print
 Pages: -
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 Table of Contents: -
 Rev. Method: Peer
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Title: Journal of Neurochemistry
Source Genre: Journal
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Pages: - Volume / Issue: 50 (1) Sequence Number: - Start / End Page: 11 - 16 Identifier: -