Label as you fold: Methyltransferase-assisted functionalization of DNA nanostructures

Christian Heck, Dmitry Torchinsky, Gil Nifker, Felix Gularek, Yael Michaeli, Elmar Weinhold, Yuval Ebenstein

Research output: Contribution to journalArticlepeer-review

Abstract

Non-DNA labels are key components for the construction of functional DNA nanostructures. Here, we present a method to graft covalent labels onto DNA origami nanostructures in an enzymatic one-pot reaction. The DNA methyltransferase M.TaqI labels the DNA nanostructures with azide groups, which serve as universal attachment points via click chemistry. Direct labeling with fluorescent dyes is also demonstrated. The procedure yields structures with high fluorescence intensities and narrow intensity distributions. In combination with UV crosslinking it enables the creation of temperature-stable, intense fluorescent beacons.

Original languageEnglish
Pages (from-to)20287-20291
Number of pages5
JournalNanoscale
Volume12
Issue number39
DOIs
StatePublished - 21 Oct 2020

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