DNAmoreDB - A Database of Deoxyribozymes

Published on 2016 in J. Am. Chem. Soc. volume 138 issue 7.

PubMed ID: 26854515

DOI:10.1021/jacs.5b12647

Abstract:

DNA catalysts (deoxyribozymes) for a variety of reactions have been identified by in vitro selection. However, for certain reactions this identification has not been achieved. One important example is DNA-catalyzed amide hydrolysis, for which a previous selection experiment instead led to DNA-catalyzed DNA phosphodiester hydrolysis. Subsequent efforts in which the selection strategy deliberately avoided phosphodiester hydrolysis led to DNA-catalyzed ester and aromatic amide hydrolysis, but aliphatic amide hydrolysis has been elusive. In the present study, we show that including modified nucleotides that bear protein-like functional groups (any one of primary amino, carboxyl, or primary hydroxyl) enables identification of amide-hydrolyzing deoxyribozymes. In one case, the same deoxyribozyme sequence without the modifications still retains substantial catalytic activity. Overall, these findings establish the utility of introducing protein-like functional groups into deoxyribozymes for identifying new catalytic function. The results also suggest the longer-term feasibility of deoxyribozymes as artificial proteases.



DNAzymes linked to this article:

Copyright © Genesilico - All rights reserved
This website is free, open to all users and there is no login required.
If you have any advice or suggestions for corrections or improvements, please contact: Almudena Ponce Salvatierra