Molecular architecture and oligomerization of Candida glabrata Cdc13 underpin its telomeric DNA-binding and unfolding activity.
Molecular architecture and oligomerization of Candida glabrata Cdc13 underpin its telomeric DNA-binding and unfolding activity.
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念珠菌CDC13的分子结构和寡聚的基础是其端粒DNA结合和展开活性。
DOI:
10.1093/nar/gkac1261
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发表时间:
2023-01-25
影响因子:
14.9
通讯作者:
Llorca, Oscar
中科院分区:
文献类型:
--
作者:
Coloma, Javier;Gonzalez-Rodriguez, Nayim;Balaguer, Francisco A.;Gmurczyk, Karolina;Aicart-Ramos, Clara;Nuero, oscar M.;Luque-Ortega, Juan Roman;Calugaru, Kimberly;Lue, Neal F.;Moreno-Herrero, Fernando;Llorca, Oscar
The CST complex is a key player in telomere replication and stability, which in yeast comprises Cdc13, Stn1 and Ten1. While Stn1 and Ten1 are very well conserved across species, Cdc13 does not resemble its mammalian counterpart CTC1 either in sequence or domain organization, and Cdc13 but not CTC1 displays functions independently of the rest of CST. Whereas the structures of human CTC1 and CST have been determined, the molecular organization of Cdc13 remains poorly understood. Here, we dissect the molecular architecture of Candida glabrata Cdc13 and show how it regulates binding to telomeric sequences. Cdc13 forms dimers through the interaction between OB-fold 2 (OB2) domains. Dimerization stimulates binding of OB3 to telomeric sequences, resulting in the unfolding of ssDNA secondary structure. Once bound to DNA, Cdc13 prevents the refolding of ssDNA by mechanisms involving all domains. OB1 also oligomerizes, inducing higher-order complexes of Cdc13 in vitro. OB1 truncation disrupts these complexes, affects ssDNA unfolding and reduces telomere length in C. glabrata. Together, our results reveal the molecular organization of C. glabrata Cdc13 and how this regulates the binding and the structure of DNA, and suggest that yeast species evolved distinct architectures of Cdc13 that share some common principles.
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影响因子:
16.8
作者:
通讯作者:
--
DOI:
10.1073/pnas.2112376119
发表时间:
2022-04-12
影响因子:
11.1
作者:
通讯作者:
--
影响因子:
14.9
作者:
Bhattacharjee A;Wang Y;Diao J;Price CM
通讯作者:
Price CM
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
DOI:
10.1126/science.1170633
发表时间:
2009-11-13
期刊:
Science (New York, N.Y.)
影响因子:
--
作者:
de Lange T
通讯作者:
de Lange T