Improved RAD51 binders through motif shuffling based on the modularity of BRC repeats
Improved RAD51 binders through motif shuffling based on the modularity of BRC repeats
复制标题
通过基于 BRC 重复模块性的基序改组改进 RAD51 结合物
DOI:
10.1101/2020.05.14.097071
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发表时间:
2020
期刊:
影响因子:
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通讯作者:
Lindenburg L
中科院分区:
文献类型:
--
作者:
Lindenburg L
Exchanges of protein sequence modules support leaps in function unavailable through point mutations during evolution. Here we study the role of the two RAD51-interacting modules within the eight binding BRC repeats of BRCA2. We created 64 chimeric repeats by shuffling these modules and measured their binding to RAD51. We found that certain shuffled module combinations were stronger binders than any of the module combinations in the natural repeats. Surprisingly, the contribution from the two modules was poorly correlated with affinities of natural repeats, with a weak BRC8 repeat containing the most effective N-terminal module. The binding of the strongest chimera, BRC8-2, to RAD51 was improved by −2.4 kCal/mol compared to the strongest natural repeat, BRC4. A crystal structure of RAD51:BRC8-2 complex shows an improved interface fit and an extended β-hairpin in this repeat. BRC8-2 was shown to function in human cells, preventing the formation of nuclear RAD51 foci after ionizing radiation.
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DOI:
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发表时间:
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期刊:
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影响因子:
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作者:
通讯作者:
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影响因子:
6.8
作者:
Fabio Lapenta;R. Jerala
通讯作者:
R. Jerala
影响因子:
2.1
作者:
Nomme, Julian;Takizawa, Yoshimasa;Takahashi, Masayuki
通讯作者:
Takahashi, Masayuki
影响因子:
2.9
作者:
Roehrl, MHA;Wang, JY;Wagner, G
通讯作者:
Wagner, G
DOI:
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发表时间:
2016
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影响因子:
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作者:
Fabrice Gielen;M. Butz;E. Rees;M. Erdélyi;T. Moschetti;M. Hyvonen;J. Edel;C. Kaminski;F. Hollfelder
通讯作者:
F. Hollfelder