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Angewandte Chemie International Edition
Communication

Efficient Replication Bypass of Size‐Expanded DNA Base Pairs in Bacterial Cells*

James C. Delaney Dr.

Departments of Chemistry and Biological Engineering, Massachusetts Institute of Technology, Cambridge, MA 02139 (USA)

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Jianmin Gao Dr.

Department of Chemistry, Stanford University, Stanford, CA 94305 (USA)

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Haibo Liu Dr.

Department of Chemistry, Stanford University, Stanford, CA 94305 (USA)

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Nidhi Shrivastav

Departments of Chemistry and Biological Engineering, Massachusetts Institute of Technology, Cambridge, MA 02139 (USA)

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John M. Essigmann Prof. Dr.

E-mail address:jessig@mit.edu

Departments of Chemistry and Biological Engineering, Massachusetts Institute of Technology, Cambridge, MA 02139 (USA)

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Eric T. Kool Prof. Dr.

E-mail address:kool@stanford.edu

Department of Chemistry, Stanford University, Stanford, CA 94305 (USA)

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First published: 14 May 2009
Cited by: 35
*

We thank the U.S. National Institutes of Health (CA80024 to J.M.E. and GM63587 to E.T.K.) for support. J.G. and H.L. acknowledge Stanford Graduate Fellowships.

Abstract

Supersize me! Size‐expanded DNA bases (xDNA) are able to encode natural DNA sequences in replication. In vitro experiments with a DNA polymerase show nucleotide incorporation opposite the xDNA bases with correct pairing. In vivo experiments using E. coli show that two xDNA bases (xA and xC, see picture) encode the correct replication partners.

Number of times cited: 35

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