Expanding RNA binding specificity and affinity of engineered PUF domains.
Expanding RNA binding specificity and affinity of engineered PUF domains.
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扩展工程 PUF 结构域的 RNA 结合特异性和亲和力
DOI:
10.1093/nar/gky134
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发表时间:
2018-05-18
影响因子:
14.9
通讯作者:
Wu JW
中科院分区:
文献类型:
--
作者:
Zhao YY;Mao MW;Zhang WJ;Wang J;Li HT;Yang Y;Wang Z;Wu JW
Specific manipulation of RNA is necessary for the research in biotechnology and medicine. The RNA-binding domains of Pumilio/fem-3 mRNA binding factors (PUF domains) are programmable RNA binding scaffolds used to engineer artificial proteins that specifically modulate RNAs. However, the native PUF domains generally recognize 8-nt RNAs, limiting their applications. Here, we modify the PUF domain of human Pumilio1 to engineer PUFs that recognize RNA targets of different length. The engineered PUFs bind to their RNA targets specifically and PUFs with more repeats have higher binding affinity than the canonical eight-repeat domains; however, the binding affinity reaches the peak at those with 9 and 10 repeats. Structural analysis on PUF with nine repeats reveals a higher degree of curvature, and the RNA binding unexpectedly and dramatically opens the curved structure. Investigation of the residues positioned in between two RNA bases demonstrates that tyrosine and arginine have favored stacking interactions. Further tests on the availability of the engineered PUFs in vitro and in splicing function assays indicate that our engineered PUFs bind RNA targets with high affinity in a programmable way.
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影响因子:
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作者:
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通讯作者:
Hall, Traci M. Tanaka
DOI:
10.1107/s0907444904019158
发表时间:
2004-12-01
影响因子:
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DOI:
10.1107/s0907444909052925
发表时间:
2010-02
期刊:
Acta crystallographica. Section D, Biological crystallography
影响因子:
--
作者:
Adams PD;Afonine PV;Bunkóczi G;Chen VB;Davis IW;Echols N;Headd JJ;Hung LW;Kapral GJ;Grosse-Kunstleve RW;McCoy AJ;Moriarty NW;Oeffner R;Read RJ;Richardson DC;Richardson JS;Terwilliger TC;Zwart PH
通讯作者:
Zwart PH