Fusion pores with low conductance are cation selective.
Fusion pores with low conductance are cation selective.
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电导率低的融合孔是阳离子的选择性。
DOI:
10.1016/j.celrep.2021.109580
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发表时间:
2021-08-24
期刊:
影响因子:
8.8
通讯作者:
Lindau M
中科院分区:
文献类型:
--
作者:
Delacruz JB;Sharma S;Rathore SS;Huang M;Lenz JS;Lindau M
Many neurotransmitters are organic ions that carry a net charge, and their release from secretory vesicles is therefore an electrodiffusion process. The selectivity of early exocytotic fusion pores is investigated by combining electrodiffusion theory, measurements of amperometric foot signals from chromaffin cells with anion substitution, and molecular dynamics simulation. The results reveal that very narrow fusion pores are cation selective, but more dilated fusion pores become anion permeable. The transition occurs around a fusion pore conductance of ~300 pS. The cation selectivity of a narrow fusion pore accelerates the release of positively charged transmitters such as dopamine, noradrenaline, adrenaline, serotonin, and acetylcholine, while glutamate release may require a more dilated fusion pore. For transmission, a fusion pore forms when vesicle and target membranes are brought together by SNARE proteins. Delacruz et al. demonstrate that selectivity of the pore accelerates release of positively charged transmitters such as dopamine, noradrenaline, adrenaline, serotonin, and acetylcholine, while glutamate release may require a more dilated fusion pore.
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DOI:
10.1085/jgp.27.1.37
发表时间:
1943-09-20
期刊:
The Journal of general physiology
影响因子:
--
作者:
Goldman DE
通讯作者:
Goldman DE
DOI:
10.1021/acs.jpcb.6b07142
发表时间:
2017-04-20
期刊:
The journal of physical chemistry. B
影响因子:
--
作者:
Gu RX;Ingólfsson HI;de Vries AH;Marrink SJ;Tieleman DP
通讯作者:
Tieleman DP
影响因子:
5.5
作者:
Hess, Berk;Kutzner, Carsten;Lindahl, Erik
通讯作者:
Lindahl, Erik
影响因子:
21.3
作者:
Gong, Liang-Wei;Alvarez de Toledo, Guillermo;Lindau, Manfred
通讯作者:
Lindau, Manfred
DOI:
10.1016/0005-2736(72)90365-3
发表时间:
1972-01-01
期刊:
BIOCHIMICA ET BIOPHYSICA ACTA
影响因子:
--
作者:
BRECKENRIDGE, WC;MORGAN, IG;GOMBOS, G
通讯作者:
GOMBOS, G