Scientists at the Department of Energy (DOE)'s Oak Ridge National Laboratory (ORNL) have shown that more than 93% of possible E. coli CRISPR-Cas9 guide RNAs—molecules that direct the gene-editing CRISPR tool to the right spot in DNA—work as intended, a far higher percentage than researchers expected. They also discovered why a small number of guides fail and developed a simple way to repair them. The work is published in the journal Nucleic Acids Research.

Scientists at the Department of Energy (DOE)'s Oak Ridge National Laboratory (ORNL) have shown that more than 93% of possible E. coli CRISPR-Cas9 guide RNAs—molecules that direct the gene-editing CRISPR tool to the right spot in DNA—work as intended, a far higher percentage than researchers expected. They also discovered why a small number of guides fail and developed a simple way to repair them. The work is published in the journal Nucleic Acids Research.

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