Drosophila katanin is a microtubule depolymerase that regulates cortical-microtubule plus-end interactions and cell migration.
Drosophila katanin is a microtubule depolymerase that regulates cortical-microtubule plus-end interactions and cell migration.
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DOI:
10.1038/ncb2206
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发表时间:
2011-04
影响因子:
21.3
通讯作者:
Sharp DJ
中科院分区:
文献类型:
--
作者:
Zhang D;Grode KD;Stewman SF;Diaz-Valencia JD;Liebling E;Rath U;Riera T;Currie JD;Buster DW;Asenjo AB;Sosa HJ;Ross JL;Ma A;Rogers SL;Sharp DJ
Regulation of microtubule dynamics at the cell cortex is important for cell motility, morphogenesis and division. Here we show that the Drosophila Katanin, Dm-Kat60, functions to generate a dynamic cortical-microtubule interface in interphase cells. In S2 cells, Dm-Kat60 concentrates at the interphase cell cortex where it suppresses the polymerization of microtubule plus-ends thereby preventing the formation of aberrantly dense cortical arrays. Dm-Kat60 also localizes to the leading edge migratory D17 cells and negatively regulates multiple parameters of their motility. Finally, in vitro, Dm-Kat60 severs and depolymerizes MTs from their ends. Based on these data, we propose that Dm-Kat60 removes tubulin from microtubule ends or lattice that contact specific cortical sites to preventing stable and/or lateral attachments. The asymmetric distribution of such an activity could help generate regional variations in MT behaviors involved in cell migration.
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