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Role of an N-Terminal Splice Segment in the Activation of the Cation Channel TRPM2 by ADP-Ribose and Hydrogen Peroxide

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dc.creator Kuehn, Frank J. P.
dc.creator Luckhoff, Andreas
dc.creator Kuehn, Cornelia
dc.creator NAZIROĞLU, Mustafa
dc.date 2009-01-31T22:00:00Z
dc.date.accessioned 2020-10-06T11:00:52Z
dc.date.available 2020-10-06T11:00:52Z
dc.identifier b17b95ea-dd95-45eb-8425-e75f18e1a247
dc.identifier 10.1007/s11064-008-9755-0
dc.identifier https://avesis.sdu.edu.tr/publication/details/b17b95ea-dd95-45eb-8425-e75f18e1a247/oai
dc.identifier.uri http://acikerisim.sdu.edu.tr/xmlui/handle/123456789/69571
dc.description In the dysfunctional splice variant TRPM2-Delta N, a stretch of 20 amino acids (aa 537-556) is missing within the N-terminal cytosolic tail of the cation channel TRPM2. The Delta N-stretch overlaps with two IQ-like calmodulin-binding domains. Moreover, it contains two PxxP motifs implicated in protein-protein interactions. Here, we constructed variants to test whether any of these motifs may explain why TRPM2-Delta N does not respond to stimulation with either ADP ribose or hydrogen peroxide. Each of the two IQ-motifs could be removed without loss of channel function. Similarly, deletion of either one or both PxxP motifs had no effect. Moreover, the single point mutation D543E associated with bipolar disorder does not change the activation of TRPM2. We conclude that no functional role can be attributed to any of the structural motifs within the Delta N-stretch that may be a spacer segment for other functional sites in the N terminus.
dc.language eng
dc.rights info:eu-repo/semantics/closedAccess
dc.title Role of an N-Terminal Splice Segment in the Activation of the Cation Channel TRPM2 by ADP-Ribose and Hydrogen Peroxide
dc.type info:eu-repo/semantics/article


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