Three microtubule severing enzymes contribute to the "Pacman-flux" machinery that moves chromosomes.
Three microtubule severing enzymes contribute to the "Pacman-flux" machinery that moves chromosomes.
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DOI:
10.1083/jcb.200612011
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发表时间:
2007-04-23
期刊:
影响因子:
--
通讯作者:
Sharp DJ
中科院分区:
文献类型:
--
作者:
Zhang D;Rogers GC;Buster DW;Sharp DJ
Chromosomes move toward mitotic spindle poles by a Pacman-flux mechanism linked to microtubule depolymerization: chromosomes actively depolymerize attached microtubule plus ends (Pacman) while being reeled in to spindle poles by the continual poleward flow of tubulin subunits driven by minus-end depolymerization (flux). We report that Pacman-flux in Drosophila melanogaster incorporates the activities of three different microtubule severing enzymes, Spastin, Fidgetin, and Katanin. Spastin and Fidgetin are utilized to stimulate microtubule minus-end depolymerization and flux. Both proteins concentrate at centrosomes, where they catalyze the turnover of γ-tubulin, consistent with the hypothesis that they exert their influence by releasing stabilizing γ-tubulin ring complexes from minus ends. In contrast, Katanin appears to function primarily on anaphase chromosomes, where it stimulates microtubule plus-end depolymerization and Pacman-based chromatid motility. Collectively, these findings reveal novel and significant roles for microtubule severing within the spindle and broaden our understanding of the molecular machinery used to move chromosomes.
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影响因子:
3.3
作者:
Kwon, M;Morales-Mulia, S;Scholey, JM
通讯作者:
Scholey, JM
影响因子:
9.2
作者:
Goshima, G;Wollman, R;Vale, RD
通讯作者:
Vale, RD
影响因子:
3.3
作者:
Goshima, G;Vale, RD
通讯作者:
Vale, RD
DOI:
10.1083/jcb.200409058
发表时间:
2005-02-14
期刊:
The Journal of cell biology
影响因子:
--
作者:
Evans KJ;Gomes ER;Reisenweber SM;Gundersen GG;Lauring BP
通讯作者:
Lauring BP
影响因子:
2.4
作者:
Kammermeier, L;Spring, J;Reichert, H
通讯作者:
Reichert, H