Abstract
The design of proteins that can bind any RNA sequence of interest has many potential biological and medical applications. Here we have expanded the recognition of Pumilio and FBF homology protein (PUF) repeats beyond adenine, guanine and uracil and evolved them to specifically bind cytosine. These repeat sequences can be used to create PUF domains capable of selectively binding RNA targets of diverse sequence and structure.
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Acknowledgements
We thank M. Wickens (University of Wisconsin–Madison) for the YBZ1 yeast strain, T. Ito (University of Tokyo) for the pGAD-RC plasmid, R. King for advice on oligonucleotide synthesis with trimer phosphoramidites and K.L. Hamilton for technical assistance. This work was supported by fellowships and grants from the Australian Research Council and the National Health and Medical Research Council.
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A.F., M.F.M.R., K.K.A.N. and O.R. conducted experiments; A.F. and O.R. designed experiments, interpreted data and prepared the manuscript.
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Filipovska, A., Razif, M., Nygård, K. et al. A universal code for RNA recognition by PUF proteins. Nat Chem Biol 7, 425–427 (2011). https://doi.org/10.1038/nchembio.577
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DOI: https://doi.org/10.1038/nchembio.577
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