Abstract

The application of conventional enzymological methods to the study of hairpin and hammerhead ribozymes has led to valuable insights into the mechanisms by which these small RNAs catalyze phosphodiester cleavage and ligation reactions. Here, protocols are presented for measuring rate constants for simple cleavage and ligation reactions mediated by minimal hammerhead and hairpin ribozymes under standard experimental conditions. Information is also provided to help researchers recognize and interpret more complex reaction kinetics that can be observed for ribozyme-sequence variants under a variety of reaction conditions.

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