Formation of High-Conductive C Subunit Channels upon Interaction with Cyclophilin D.
Formation of High-Conductive C Subunit Channels upon Interaction with Cyclophilin D.
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DOI:
10.3390/ijms222011022
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发表时间:
2021-10-13
影响因子:
5.6
通讯作者:
Pavlov EV
中科院分区:
文献类型:
--
作者:
Amodeo GF;Krilyuk N;Pavlov EV
The c subunit of the ATP synthase is an inner mitochondrial membrane (IMM) protein. Besides its role as the main component of the rotor of the ATP synthase, c subunit from mammalian mitochondria exhibits ion channel activity. In particular, c subunit may be involved in one of the pathways leading to the formation of the permeability transition pore (PTP) during mitochondrial permeability transition (PT), a phenomenon consisting of the permeabilization of the IMM due to high levels of calcium. Our previous study on the synthetic c subunit showed that high concentrations of calcium induce misfolding into cross-β oligomers that form low-conductance channels in model lipid bilayers of about 400 pS. Here, we studied the effect of cyclophilin D (CypD), a mitochondrial chaperone and major regulator of PTP, on the electrophysiological activity of the c subunit to evaluate its role in the functional properties of c subunit. Our study shows that in presence of CypD, c subunit exhibits a larger conductance, up to 4 nS, that could be related to its potential role in mitochondrial toxicity. Further, our results suggest that CypD is necessary for the formation of c subunit induced PTP but may not be an integral part of the pore.
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影响因子:
4.3
作者:
Bonora, Massimo;Bononi, Angela;Pinton, Paolo
通讯作者:
Pinton, Paolo
影响因子:
4
作者:
Angelova PR;Ludtmann MH;Horrocks MH;Negoda A;Cremades N;Klenerman D;Dobson CM;Wood NW;Pavlov EV;Gandhi S;Abramov AY
通讯作者:
Abramov AY
DOI:
10.1083/jcb.102.1.97
发表时间:
1986-01
期刊:
The Journal of cell biology
影响因子:
--
作者:
Schwerzmann K;Cruz-Orive LM;Eggman R;Sänger A;Weibel ER
通讯作者:
Weibel ER
影响因子:
3.9
作者:
Walker, John E.
通讯作者:
Walker, John E.
影响因子:
3.4
作者:
Pavlov, E;Bladen, C;French, RJ
通讯作者:
French, RJ