Microtubule-based mitotic spindles contain a micron-sized mixed-nucleotide zone
Microtubule-based mitotic spindles contain a micron-sized mixed-nucleotide zone
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基于微管的有丝分裂纺锤体包含微米大小的混合核苷酸区域
DOI:
10.1101/2021.07.23.453504
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发表时间:
2021
期刊:
影响因子:
--
通讯作者:
Castrogiovanni C
中科院分区:
文献类型:
--
作者:
Castrogiovanni C
Current models infer that the microtubule-based mitotic spindle is built from GDP-tubulin with small GTP caps at microtubule plus-ends, including those that attach to kinetochores (K-fibres). Here we reveal that K-fibres additionally contain a dynamic mixed-nucleotide zone that reaches several microns in length. This zone becomes visible in cells expressing fluorescently labelled EBs, a known marker for GTP-tubulin, and endogenously-labelled HURP - a protein which we show to preferentially bind the GDP microtubule latticein vitro. In living cells HURP accumulates on the ends of depolymerising K-fibres, whilst avoiding recruitment to nascent polymerising K-fibres. This gives rise to a growing “HURP-gap” which we can recapitulate in a minimal computational simulation. We therefore postulate that the K-fibre lattice contains a dynamic, micron-sized mixed-nucleotide zone.One Sentence SummaryWe reveal that the microtubules of the mitotic spindle contain a third, uncharacterized domain, a mixed nucleotide zone that resides between the GTP-cap and the GDP-tubulin lattice.
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DOI:
--
发表时间:
2021
期刊:
bioRxiv
影响因子:
--
作者:
Onur Sen;Jonathan U. Harrison;N. Burroughs;A. McAinsh
通讯作者:
A. McAinsh
DOI:
10.1083/jcb.200909005
发表时间:
2010-03-08
期刊:
The Journal of cell biology
影响因子:
--
作者:
Jaqaman K;King EM;Amaro AC;Winter JR;Dorn JF;Elliott HL;McHedlishvili N;McClelland SE;Porter IM;Posch M;Toso A;Danuser G;McAinsh AD;Meraldi P;Swedlow JR
通讯作者:
Swedlow JR
影响因子:
4
作者:
Roth D;Fitton BP;Chmel NP;Wasiluk N;Straube A
通讯作者:
Straube A
影响因子:
11.8
作者:
Maciejowski J;Drechsler H;Grundner-Culemann K;Ballister ER;Rodriguez-Rodriguez JA;Rodriguez-Bravo V;Jones MJK;Foley E;Lampson MA;Daub H;McAinsh AD;Jallepalli PV
通讯作者:
Jallepalli PV
DOI:
10.1101/2019.12.31.891234
发表时间:
2020
期刊:
bioRxiv
影响因子:
--
作者:
B. Castle;Kristen McKibben;E. Rhoades;D. Odde
通讯作者:
D. Odde