De Novo Synthesis and Development of an RNA Enzyme

Overview

Journal Proc Natl Acad Sci U S A

Specialty Science

Date 2004 Sep 15

PMID 15365187

Citations 42

Authors

Yoshiya Ikawa

Kentaro Tsuda

Shigeyoshi Matsumura

Tan Inoue

Affiliations

Soon will be listed here.

Abstract

Arbitrary manipulation of molecular recognition at the atomic level has many applications. However, systematic design and de novo synthesis of an artificial enzyme based on such manipulation has been a long-standing challenge in the field of chemistry and biotechnology. In this report, we developed an artificial RNA ligase by implementing a synthetic strategy that fuses a series of 3D molecular modelings based on naturally occurring RNA-RNA recognition motifs with a small-scale combinatorial synthesis of a modular catalytic unit. The resulting ligase produces a 3'-5' linkage in a template-directed manner for any combinations of two nucleotides at the reaction site. The reaction rate is 10(6)-fold over that of the uncatalyzed reaction with a yield higher than those of previously reported ligase ribozymes. The strategy may be applicable to the synthesis and development of a variety of nonnatural functional RNAs with defined 3D structures.

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