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Updated: Jul 7, 2026

Exploring Sequence Space to Identify Binding Sites for Regulatory RNA-Binding Proteins
Published on: August 9, 2019
Rapid selection of accessible and cleavable sites in RNA by Escherichia coli RNase P and random external guide
Eirik W Lundblad1, Gaoping Xiao, Jae-Hyeong Ko
1Department of Molecular, Cellular, and Developmental Biology, Yale University, New Haven, CT 06520, USA.
Abstract:
A method of inhibiting the expression of particular genes by using external guide sequences (EGSs) has been improved in its rapidity and specificity. Random EGSs that have 14-nt random sequences are used in the selection procedure for an EGS that attacks the mRNA for a gene in a particular location. A mixture of the random EGSs, the particular target RNA, and RNase P is used in the diagnostic procedure, which, after completion, is analyzed in a gel with suitable control lanes. Within a few hours, the procedure is complete. The action of EGSs designed by an older method is compared with EGSs designed by the random EGS method on mRNAs from two bacterial pathogens.
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