The spatial segregation of the plasma membrane plays a prominent role in distinguishing and sorting a large number of signals a cell receives simultaneously. The plasma membrane comprises regions known as lipid rafts, which serve as signal-transduction hubs and platforms for sorting membrane-associated proteins. Ca2+-binding proteins of the annexin family have been ascribed a role in the regulation of raft dynamics. Glycosylphosphatidylinositol-anchored 5′-nucleotidase is an extracellular, raft-associated enzyme responsible for conversion of extracellular ATP into adenosine. Our results point to a regulation of ecto-5′-nucleotidase activity by Ca2+-dependent, annexin-mediated stabilization of membrane rafts.
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Conference Article| May 22 2006
Regulation of ecto-5′-nucleotidase activity via Ca2+-dependent, annexin 2-mediated membrane rearrangement?
Publisher: Portland Press Ltd
Received: December 19 2005
Online ISSN: 1470-8752
Print ISSN: 0300-5127
© 2006 The Biochemical Society
E.B. Babiychuk, A. Draeger; Regulation of ecto-5′-nucleotidase activity via Ca2+-dependent, annexin 2-mediated membrane rearrangement?. Biochem Soc Trans 1 June 2006; 34 (3): 374–376. doi: https://doi.org/10.1042/BST0340374
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