mTORC1 Controls Phase Separation and the Biophysical Properties of the Cytoplasm by Tuning Crowding.
mTORC1 Controls Phase Separation and the Biophysical Properties of the Cytoplasm by Tuning Crowding.
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DOI:
10.1016/j.cell.2018.05.042
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发表时间:
2018-07-12
期刊:
影响因子:
64.5
通讯作者:
Holt, L. J.
中科院分区:
文献类型:
--
作者:
Delarue, M.;Brittingham, G. P.;Pfeffer, S.;Surovtsev, I. V.;Pinglay, S.;Kennedy, K. J.;Schaffer, M.;Gutierrez, J. I.;Sang, D.;Poterewicz, G.;Chung, J. K.;Plitzko, J. M.;Groves, J. T.;Jacobs-Wagner, C.;Engel, B. D.;Holt, L. J.
Macromolecular crowding has a profound impact on reaction rates and the physical properties of the cell interior, but the mechanisms that regulate crowding are poorly understood. We developed Genetically Encoded Multimeric nanoparticles (GEMs) to dissect these mechanisms. GEMs are homomultimeric scaffolds fused to a fluorescent protein that self-assemble into bright, stable particles of defined size and shape. By combining tracking of GEMs with genetic and pharmacological approaches, we discovered that the mTORC1 pathway can modulate the effective diffusion coefficient of particles ≥ 20 nm in diameter more than 2-fold by tuning ribosome concentration, without any discernable effect on the motion of molecules ≤ 5 nm. This change in ribosome concentration affected phase separation both in vitro and in vivo. Together, these results establish a role for mTORC1 in controlling both the mesoscale biophysical properties of the cytoplasm and biomolecular condensation.
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影响因子:
64.5
作者:
Cai X;Chen J;Xu H;Liu S;Jiang QX;Halfmann R;Chen ZJ
通讯作者:
Chen ZJ
影响因子:
7.7
作者:
Bykov YS;Schaffer M;Dodonova SO;Albert S;Plitzko JM;Baumeister W;Engel BD;Briggs JA
通讯作者:
Briggs JA
DOI:
10.1073/pnas.1716305114
发表时间:
2017-12-26
影响因子:
11.1
作者:
Albert S;Schaffer M;Beck F;Mosalaganti S;Asano S;Thomas HF;Plitzko JM;Beck M;Baumeister W;Engel BD
通讯作者:
Engel BD
影响因子:
64.5
作者:
Guo Q;Lehmer C;Martínez-Sánchez A;Rudack T;Beck F;Hartmann H;Pérez-Berlanga M;Frottin F;Hipp MS;Hartl FU;Edbauer D;Baumeister W;Fernández-Busnadiego R
通讯作者:
Fernández-Busnadiego R
影响因子:
4.4
作者:
COHEN, MH;TURNBULL, D
通讯作者:
TURNBULL, D