Single-molecule analysis of a molecular disassemblase reveals the mechanism of Hsc70-driven clathrin uncoating.
Single-molecule analysis of a molecular disassemblase reveals the mechanism of Hsc70-driven clathrin uncoating.
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DOI:
10.1038/nsmb.1985
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发表时间:
2011-03
影响因子:
16.8
通讯作者:
中科院分区:
文献类型:
--
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Heat shock cognate protein 70 (Hsc70) supports remodeling of protein complexes -- for example, disassembly of clathrin coats on endocytic coated vesicles. To understand how a simple ATP driven molecular clamp catalyzes a large-scale disassembly reaction, we have used single-particle fluorescence imaging to track the dynamics of Hsc70 and its clathrin substrate in real time. Hsc70 accumulates to a critical level, determined by kinetic modeling to be one Hsc70 for every two functional attachment sites; rapid, all-or-none uncoating then ensues. We propose that Hsc70 traps conformational distortions, seen previously by electron cryomicroscopy, in the vicinity of each occupied site and that accumulation of local strains destabilises the clathrin lattice. Capture of conformational fluctuations may be a general mechanism for chaperone-driven disassembly of protein complexes.
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DOI:
10.1083/jcb.139.5.1089
发表时间:
1997-12-01
期刊:
The Journal of cell biology
影响因子:
--
作者:
Terada K;Kanazawa M;Bukau B;Mori M
通讯作者:
Mori M
影响因子:
2.9
作者:
Barouch, W;Prasad, K;Eisenberg, E
通讯作者:
Eisenberg, E
影响因子:
3.4
作者:
Aitken, Colin Echeverria;Marshall, R. Andrew;Puglisi, Joseph D.
通讯作者:
Puglisi, Joseph D.
影响因子:
64.8
作者:
Fotin, A;Cheng, YF;Kirchhausen, T
通讯作者:
Kirchhausen, T
影响因子:
64.8
作者:
Kerssemakers, Jacob W. J.;Munteanu, E. Laura;Dogterom, Marileen
通讯作者:
Dogterom, Marileen