Protein architecture of the human kinetochore microtubule attachment site.
Protein architecture of the human kinetochore microtubule attachment site.
复制标题
DOI:
10.1016/j.cell.2009.03.035
复制
发表时间:
2009-05-15
期刊:
影响因子:
64.5
通讯作者:
Salmon ED
中科院分区:
文献类型:
--
作者:
Wan X;O'Quinn RP;Pierce HL;Joglekar AP;Gall WE;DeLuca JG;Carroll CW;Liu ST;Yen TJ;McEwen BF;Stukenberg PT;Desai A;Salmon ED
Centromeric chromatin – spindle microtubule interactions mediated by kinetochores drive chromosome segregation. We have developed a two-color fluorescence light microscopy method that measures average label separation, Delta, at < 5 nm accuracy — to elucidate the protein architecture of human metaphase kinetochores. Delta analysis, when correlated with tension states of spindle-attached sister kinetochore pairs, provided information on mechanical properties of protein linkages within kinetochores. Treatment with taxol—which suppresses microtubule dynamics, eliminates tension at kinetochores, and activates the spindle checkpoint—resulted in specific large-scale changes in kinetochore architecture. Cumulatively, Delta analysis revealed compliant linkages close to the centromeric chromatin, suggests a model for how the KMN (KNL1/Mis12 complex/Ndc80 complex) network provides microtubule attachment and generates pulling forces from depolymerization, and reveals architectural changes induced by taxol treatment. The methods described here should also be applicable to other intermediate-scale biological machines in cells.
登录
查看更多内容
影响因子:
64.5
作者:
Ciferri, Claudio;Pasqualato, Sebastiano;Musacchio, Andrea
通讯作者:
Musacchio, Andrea
DOI:
10.1016/j.cub.2009.02.056
发表时间:
2009-04-28
期刊:
Current biology : CB
影响因子:
--
作者:
Joglekar AP;Bloom K;Salmon ED
通讯作者:
Salmon ED
DOI:
10.1083/jcb.200802189
发表时间:
2008-05-05
期刊:
The Journal of cell biology
影响因子:
--
作者:
Kim Y;Heuser JE;Waterman CM;Cleveland DW
通讯作者:
Cleveland DW
影响因子:
3.3
作者:
Hori, Tetsuya;Okada, Masahiro;Fukagawa, Tatsuo
通讯作者:
Fukagawa, Tatsuo
影响因子:
9.2
作者:
Cimini, D;Cameron, LA;Salmon, ED
通讯作者:
Salmon, ED