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  Calcium sensitivity of glutamate release in a calyx-type terminal

Bollmann, J. H., Sakmann, B., & Borst, J. G. G. (2000). Calcium sensitivity of glutamate release in a calyx-type terminal. Science, 289(5481), 953-957. doi:10.1126/science.289.5481.953.

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Genre: Journal Article
Alternative Title : Calcium sensitivity of glutamate release in a calyx-type terminal

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Science_289_2000_953.pdf (Any fulltext), 247KB
 
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Bollmann, Johann H.1, Author           
Sakmann, Bert1, Author           
Borst, J. Gerard G.1, Author           
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1Department of Cell Physiology, Max Planck Institute for Medical Research, Max Planck Society, ou_1497701              

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 Abstract: Synaptic efÞcacy critically depends on the presynaptic intracellular calcium concentration ([Ca21]i). We measured the calcium sensitivity of glutamate release in a rat auditory brainstem synapse by laser photolysis of caged calcium. A rise in [Ca21]i to 1 micromolar readily evoked release. An increase to .30 micromolar depleted the releasable vesicle pool in ,0.5 millisecond. A comparison with action potentialÐevoked release suggested that a brief increase of [Ca21]i to ;10 micromolar would be sufÞcient to reproduce the physiological release pattern. Thus, the calcium sensitivity of release at this synapse is high, and the distinction between phasic and delayed release is less pronounced than previously thought.

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Language(s): eng - English
 Dates: 2000-05-012000-07-012000-08-11
 Publication Status: Issued
 Pages: 5
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 Rev. Type: Peer
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Title: Science
Source Genre: Journal
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Publ. Info: Washington, D.C. : American Association for the Advancement of Science
Pages: - Volume / Issue: 289 (5481) Sequence Number: - Start / End Page: 953 - 957 Identifier: ISSN: 0036-8075
CoNE: https://pure.mpg.de/cone/journals/resource/991042748276600_1