How do T-type calcium channels control low-threshold exocytosis?

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dc.contributor.authorWeiss, Norbert
dc.contributor.authorDe Waard, Michel
dc.contributor.authorZamponi, Gerald W.
dc.date.accessioned2018-05-29T15:47:50Z
dc.date.available2018-05-29T15:47:50Z
dc.date.issued2012-03-12
dc.description.abstractLow-voltage-activated T-type calcium channels act as a major pathway for calcium entry near the resting membrane potential in a wide range of neuronal cell types. Several reports have uncovered an unrecognized feature of T-type channels in the control of vesicular neurotransmitter and hormone release, a process so far thought to be mediated exclusively by high-voltage-activated calcium channels. However, the underlying molecular mechanisms linking T-type calcium channels to vesicular exocytosis have remained enigmatic. In a recent study, we have reported that Ca(v)3.2 T-type channel forms a signaling complex with the neuronal Q-SNARE syntaxin-1A and SNAP-25. This interaction that relies on specific Ca(v)3.2 molecular determinants, not only modulates T-type channel activity, but was also found essential to support low-threshold exocytosis upon Ca(v)3.2 channel expression in MPC 9/3L-AH chromaffin cells. Overall, we have indentified an unrecognized regulation pathway of T-type calcium channels by SNARE proteins, and proposed the first molecular mechanism by which T-type channels could mediate low-threshold exocytosis.en_US
dc.identifier.citationWeiss, N., Zamponi, G. W., & De Waard, M. (2012). How do T-type calcium channels control low-threshold exocytosis? Communicative and Integrative Biology, 5(4), 377–380. https://doi.org/10.4161/cib.1999en_US
dc.identifier.doihttp://dx.doi.org/10.4161/cib.19997en_US
dc.identifier.urihttp://hdl.handle.net/1880/106701
dc.language.isoenen_US
dc.publisherLandes Bioscienceen_US
dc.publisher.departmentPhysiology & Pharmacologyen_US
dc.publisher.facultyCumming School of Medicineen_US
dc.publisher.institutionUniversity of Calgaryen_US
dc.rights.urihttps://creativecommons.org/licenses/by/4.0en_US
dc.titleHow do T-type calcium channels control low-threshold exocytosis?en_US
dc.typejournal articleen_US
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