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January 24, 2010 | History

Subcellular localization of human Nedd4-2 splice isoforms 1 edition

Subcellular localization of human Nedd4-2 splice isoforms
Kathleen Nethery-Brokx

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Subcellular localization of human Nedd4-2 splice isoforms.

Published 2006 .
Written in English.

About the Book

Neural precursor cell-expressed developmentally downregulated 4 (Nedd4) is an E3 ubiquitin-protein ligase that has an N-terminal C2 domain, three or four WW domains and a C-terminal HECT domain. The C2 domain is a small (∼130 amino acid) calcium binding, lipid-binding and protein-protein interaction domain. In polarized MDCK cells V5 epitope-tagged human Nedd4-2(+C2) and hNedd4-2(+C2) were used for both confocal and EM experiments. hNedd4-2(+C2) localized to the apical and lateral membranes of MDCK cells both in the presence and absence of increased cystolic calcium levels, and the hNedd4-2(DeltaC2) isoform demonstrated cystolic localization. Binding of GST-tagged C2 domains from rat Nedd4-1, hNedd4-1 and hNedd4-2 to nitrocellulose-bound phospholipids showed binding of all C2 domains to phosphatidylinositols (PtdIns) that increased with addition of calcium. This study has provided evidence that the C2 domain of hNedd4-2 serves to target the protein to the apical membrane of polarized epithelium where it can interact with its substrates.

Edition Notes

Source: Masters Abstracts International, Volume: 44-06, page: 2803.

Thesis (M.Sc.)--University of Toronto, 2006.

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

ROBARTS MICROTEXT copy on microfiche.

The Physical Object

116 leaves.
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History Created December 11, 2009 · 2 revisions 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