Molecular architecture of the augmin complex.
Molecular architecture of the augmin complex.
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DOI:
10.1038/s41467-022-33227-7
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发表时间:
2022-09-16
影响因子:
16.6
通讯作者:
中科院分区:
文献类型:
--
作者:
Accurate segregation of chromosomes during mitosis depends on the correct assembly of the mitotic spindle, a bipolar structure composed mainly of microtubules. The augmin complex, or homologous to augmin subunits (HAUS) complex, is an eight-subunit protein complex required for building robust mitotic spindles in metazoa. Augmin increases microtubule density within the spindle by recruiting the γ-tubulin ring complex (γ-TuRC) to pre-existing microtubules and nucleating branching microtubules. Here, we elucidate the molecular architecture of augmin by single particle cryo-electron microscopy (cryo-EM), computational methods, and crosslinking mass spectrometry (CLMS). Augmin’s highly flexible structure contains a V-shaped head and a filamentous tail, with the head existing in either extended or contracted conformational states. Our work highlights how cryo-EM, complemented by computational advances and CLMS, can elucidate the structure of a challenging protein complex and provides insights into the function of augmin in mediating microtubule branching nucleation. The eight-subunit augmin complex is required to nucleate branching microtubules and create a robust mitotic spindle during cell division. Here, the authors use cryo-EM, crosslinking mass spectrometry, and computational tools to build a structural model of the human augmin complex.
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DOI:
10.1083/jcb.201607060
发表时间:
2017-04-03
期刊:
The Journal of cell biology
影响因子:
--
作者:
Alfaro-Aco R;Thawani A;Petry S
通讯作者:
Petry S
影响因子:
64.8
作者:
Jumper J;Evans R;Pritzel A;Green T;Figurnov M;Ronneberger O;Tunyasuvunakool K;Bates R;Žídek A;Potapenko A;Bridgland A;Meyer C;Kohl SAA;Ballard AJ;Cowie A;Romera-Paredes B;Nikolov S;Jain R;Adler J;Back T;Petersen S;Reiman D;Clancy E;Zielinski M;Steinegger M;Pacholska M;Berghammer T;Bodenstein S;Silver D;Vinyals O;Senior AW;Kavukcuoglu K;Kohli P;Hassabis D
通讯作者:
Hassabis D
影响因子:
21.3
作者:
通讯作者:
--
影响因子:
3.7
作者:
Fischer, Lutz;Rappsilber, Juri
通讯作者:
Rappsilber, Juri
DOI:
10.1073/pnas.1106223108
发表时间:
2011-07-12
影响因子:
11.1
作者:
Johmura, Yoshikazu;Soung, Nak-Kyun;Lee, Kyung S.
通讯作者:
Lee, Kyung S.