Journal
MOLECULAR CELL
Volume 23, Issue 4, Pages 447-450Publisher
CELL PRESS
DOI: 10.1016/j.molcel.2006.08.001
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The recent X-ray crystal structure of a hammerhead ribozyme derived from Schistosoma mansoni containing the rate-enhancing peripheral domain has a catalytic core that is very different from the catalytic core present in the structure of the minimal hammerhead, which lacks a peripheral domain (Martick and Scott, 2006). The new structure reconciles many of the disagreements between the minimal hammerhead structure and the biochemical data on the cleavage properties of chemically modified hammerheads. The new structure also emphasizes the dynamic nature of small RNA domains and provides a cautionary tale for everyone who tries to use structure to understand function.
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