HDV Ribozymes

Part of the Current Topics in Microbiology and Immunology book series (CT MICROBIOLOGY, volume 307)


The self-cleaving RNA sequences, or ribozymes, in the genomic and antigenomic strands of hepatitis delta virus (HDV) RNA fold into structures that are similar to each other but distinct from those of small ribozymes associated with the RNA replicons that infect plants. HDV ribozymes have provided a tractable system for studying the mechanism of catalytic RNA, and results of biochemical and structural studies on the HDV ribozymes, from a number of labs, have enhanced our understanding and expanded our thinking about the potential for catalytic roles of RNA side chains. The results of these studies are consistent with models suggesting that both an active-site cytosine and a divalent metal ion have catalytic roles in facilitating the cleavage reaction in the HDV ribozymes. Despite recent advances, details about the catalytic mechanism of the HDV ribozyme continue to be debated, and these ribozymes should serve as a good system for further study.


Cleavage Reaction Hepatitis Delta Virus Hammerhead Ribozyme Hairpin Ribozyme Ribozyme Activity 
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© Springer-Verlag Berlin Heidelberg 2006

Authors and Affiliations

  1. 1.Department of BiochemistryDuke University Medical CenterDurhamUSA

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