Structural basis for microtubule binding and release by dynein.
Structural basis for microtubule binding and release by dynein.
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DOI:
10.1126/science.1224151
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发表时间:
2012-09-21
期刊:
影响因子:
--
通讯作者:
Leschziner AE
中科院分区:
文献类型:
--
作者:
Redwine WB;Hernandez-Lopez R;Zou S;Huang J;Reck-Peterson SL;Leschziner AE
Cytoplasmic dynein is a microtubule-based motor required for intracellular transport and cell division. Its movement involves coupling cycles of track binding and release with cycles of force-generating nucleotide hydrolysis. How this is accomplished given the ~25 nm separating dynein’s track- and nucleotide-binding sites is not understood. Here, we present a sub-nanometer-resolution structure of dynein’s microtubule-binding domain bound to microtubules by cryo-electron microscopy that was used to generate a pseudo-atomic model of the complex with molecular dynamics. We identified large rearrangements triggered by track binding and specific interactions, confirmed by mutagenesis and single molecule motility assays, which tune dynein’s affinity for microtubules. Our results provide a molecular model for how dynein’s binding to microtubules is communicated to the rest of the motor.
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影响因子:
16.8
作者:
通讯作者:
--
DOI:
10.1126/science.1164424
发表时间:
2008-12-12
期刊:
Science (New York, N.Y.)
影响因子:
--
作者:
Carter AP;Garbarino JE;Wilson-Kubalek EM;Shipley WE;Cho C;Milligan RA;Vale RD;Gibbons IR
通讯作者:
Gibbons IR
影响因子:
3.3
作者:
Koonce, MP;Tikhonenko, I
通讯作者:
Tikhonenko, I
影响因子:
64.8
作者:
GIBBONS, IR;GIBBONS, BH;ASAI, DJ
通讯作者:
ASAI, DJ
影响因子:
4
作者:
Hook, Peter;Vallee, Richard B.
通讯作者:
Vallee, Richard B.