Title : Synaptotagmin isoforms couple distinct ranges of Ca2+, Ba2+, and Sr2+ concentration to SNARE-mediated membrane fusion.

Pub. Date : 2005 Oct

PMID : 16093350






3 Functional Relationships(s)
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Compound Name
Protein Name
Organism
1 Synaptotagmin isoforms couple distinct ranges of Ca2+, Ba2+, and Sr2+ concentration to SNARE-mediated membrane fusion. strontium cation synaptotagmin 1 Homo sapiens
2 We found that different isoforms of syt couple distinct ranges of Ca2+, Ba2+, and Sr2+ to membrane fusion; syt VII was approximately 400-fold more sensitive to Ca2+ than was syt I. Omission of phosphatidylserine (PS) from both populations of liposomes completely abrogated the ability of all three isoforms of syt to stimulate fusion. strontium cation synaptotagmin 1 Homo sapiens
3 Using Sr2+ and Ba2+, we found that binding of syt to PS and t-SNAREs can be dissociated from activation of fusion, uncovering posteffector-binding functions for syt. strontium cation synaptotagmin 1 Homo sapiens