A role of complexin-lipid interactions in membrane fusion.
A role of complexin-lipid interactions in membrane fusion.
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DOI:
10.1016/j.febslet.2009.06.025
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发表时间:
2009-07-21
期刊:
影响因子:
3.5
通讯作者:
Soellner, Thomas H.
中科院分区:
文献类型:
--
作者:
Seiler, Florian;Malsam, Joerg;Krause, Jean Michel;Soellner, Thomas H.
Complexins and synaptotagmins regulate calcium-dependent exocytosis. A central helix in complexin confers specific binding to the SNARE fusion machinery. An accessory helix in the amino-terminal region inhibits membrane fusion by blocking SNAREpin zippering. We now show that an amphipathic helix in the carboxy-terminal region of complexin I binds lipid bilayers and affects SNARE-mediated lipid mixing in a liposome fusion assay. The substitution of a hydrophobic amino acid within the helix by a charged residue abolishes the lipid interaction and the stimulatory effect of complexin I in liposome fusion. In contrast, the introduction of the bulky hydrophobic amino acid tryptophan stimulates lipid binding and liposome fusion. This data shows that local complexin-lipid interactions can play a role in membrane fusion.
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DOI:
10.1126/science.1166500
发表时间:
2009-01-23
期刊:
Science (New York, N.Y.)
影响因子:
--
作者:
Giraudo CG;Garcia-Diaz A;Eng WS;Chen Y;Hendrickson WA;Melia TJ;Rothman JE
通讯作者:
Rothman JE
影响因子:
16.8
作者:
Xue M;Reim K;Chen X;Chao HT;Deng H;Rizo J;Brose N;Rosenmund C
通讯作者:
Rosenmund C
影响因子:
64.8
作者:
Fukuda, R;McNew, JA;Söllner, TH
通讯作者:
Söllner, TH
影响因子:
25
作者:
Huntwork, Sarah;Littleton, J. Troy
通讯作者:
Littleton, J. Troy
影响因子:
56.9
作者:
Hu, C;Ahmed, M;Rothman, JE
通讯作者:
Rothman, JE