Volume 4, Issue 4 pp. 633-655
Review

Ribozyme Catalysis of Metabolism in the RNA World

Xi Chen

Xi Chen

Department of Chemistry and Biochemistry, Institute for Cell and Molecular Biology, University of Texas at Austin, Austin, TX 78712, USA

Search for more papers by this author
Na Li

Na Li

Department of Chemistry and Biochemistry, Institute for Cell and Molecular Biology, University of Texas at Austin, Austin, TX 78712, USA

Search for more papers by this author
Andrew D. Ellington

Andrew D. Ellington

Department of Chemistry and Biochemistry, Institute for Cell and Molecular Biology, University of Texas at Austin, Austin, TX 78712, USA

Search for more papers by this author
First published: 19 April 2007
Citations: 162

Abstract

In vitro selection has proven to be a useful means of explore the molecules and catalysts that may have existed in a primoridal ‘RNA world’. By selecting binding species (aptamers) and catalysts (ribozymes) from random sequence pools, the relationship between biopolymer complexity and function can be better understood, and potential evolutionary transitions between functional molecules can be charted. In this review, we have focused on several critical events or transitions in the putative RNA world: RNA self-replication; the synthesis and utilization of nucleotide-based cofactors; acyl-transfer reactions leading to peptide and protein synthesis; and the basic metabolic pathways that are found in modern living systems.

The full text of this article hosted at iucr.org is unavailable due to technical difficulties.