Mutational analysis of the nuclease domain of Escherichia coli ribonuclease III. Identification of conserved acidic residues that are important for catalytic function in vitro.


The ribonuclease III superfamily represents a structurally distinct group of double-strand-specific endonucleases with essential roles in RNA maturation, RNA decay, and gene silencing. Bacterial RNase III orthologs exhibit the simplest structures, with an N-terminal nuclease domain and a C-terminal double-stranded RNA-binding domain (dsRBD), and are active… (More)


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