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  • Title: Transcriptional Knockdown in Pneumococci Using CRISPR Interference.
    Author: Kjos M.
    Journal: Methods Mol Biol; 2019; 1968():89-98. PubMed ID: 30929208.
    Abstract:
    Sequence-specific knockdown of gene expression using CRISPR interference (CRISPRi) has recently been developed for Streptococcus pneumoniae. By coexpression of a catalytically inactive Cas9-protein (dCas9) and a single guide RNA (sgRNA), CRISPRi can be used to knock down transcription of any gene of interest. Gene specificity is mediated by a 20 bp sequence on the sgRNA, and new genes can be targeted by replacing this 20 bp sequence. Here, a protocol is provided for design of sgRNAs and construction of CRIPSRi strains in S. pneumoniae, based on the vectors published by Liu et al. (Mol Syst Biol 13:931, 2017).
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