Journal
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
Volume 139, Issue 25, Pages 8487-8496Publisher
AMER CHEMICAL SOC
DOI: 10.1021/jacs.7b01640
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Funding
- Ministry of Education, Culture, Sports, Science and Technology (Japan) [25248038, 15H01402, 17H01213, 15H05492, 17H05440]
- Grants-in-Aid for Scientific Research [17H01213, 15H05492, 15H01402, 25248038, 17H05440] Funding Source: KAKEN
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Simultaneous formation of specific covalent linkages at nucleotides in given DNA sequences demand distinct orthogonal reactivity of DNA modification agents. Such highly specific reactions require well-balanced reactivity and affinity of the DNA modification agents. Conjugation of a sequence-specific DNA binding zinc finger protein and a self-ligating protein tag provides a modular adaptor that expedites formation of a covalent bond between the protein tag and a substrate-modified nucleotide at a specific DNA sequence. The modular adaptor stably locates a protein of interest fused to it at the target position on DNA scaffold in its functional form. Modular adaptors with orthogonal selectivity and fast reaction kinetics to specific DNA sequences enable site-specific location of different protein molecules simultaneously. Three different modular adaptors consisting of zinc finger proteins with distinct DNA sequence specificities and self-ligating protein tags with different substrate specificities achieved orthogonal covalent bond formation at respective sequences on the same DNA scaffold with an overall coassembly yield over 90%. Application of this unique set of orthogonal modular adaptors enabled construction of a cascade reaction of three enzymes from xylose metabolic pathway on DNA scaffold.
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