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January 24, 2010 | History

Molecular determinants of synaptotagmin I clustering during synapse formation 1 edition

Molecular determinants of synaptotagmin I clustering during synapse fo ...
Peter Michael Gardzinski

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Molecular determinants of synaptotagmin I clustering during synapse formation.

Published 2005 .
Written in English.

About the Book

Little is known about the mechanisms leading to synaptotagmin I (syt) redistribution and synaptogenesis. Both C2 domains of syt bind with many effector molecules, although the C2B domain appears to play a more important role in neurotransmission than the C2A. Using an in vitro molluscan Lymnaea stagnalis synapse model system and immunohistochemistry, I show that syt localizes at the presynaptic contact site following membrane contact with an identified postsynaptic partner. Target-cell contact (TCC) induces an early transient upregulation in global expression of syt. Using a dominant negative approach, I show that loop 3 of the C2A prevents syt aggregation at the TCC site, whereas loop 3 of the C2B does not. A C-terminal peptide composed of the WHXL motif, important for vesicle docking, also prevents syt clustering. In conclusion, TCC is necessary for syt redistribution in nascent synapses between identified L. stagnalis neurons and requires loop 3 of the C2A.

Edition Notes

Source: Masters Abstracts International, Volume: 44-02, page: 0769.

Thesis (M.Sc.)--University of Toronto, 2005.

Electronic version licensed for access by U. of T. users.

GERSTEIN MICROTEXT copy on microfiche (2 microfiches).

The Physical Object

Pagination
100 leaves.
Number of pages
100

ID Numbers

Open Library
OL19217776M
ISBN 10
0494074914

History

Download catalog record: RDF / JSON
January 24, 2010 Edited by WorkBot add more information to works
December 11, 2009 Created by WorkBot add works page