Abstract
The review is devoted to the use of the CRISPR/Cas system for obtaining knockdowns of target bacterial genes by CRISPR-mediated interference (CRISPRi). CRISPRi is based on the preservation of the ability of the inactivated dCas nuclease in complex with guide RNA to bind a target, which leads to reversible repression of the selected genes. The review describes the principle of operation of CRISPR/Cas and CRIS-PRi/dCas and provides examples of various approaches to the use of CRISPRi with the most popular inactivated nucleases dCas9 and dCas12a. Also, attention is paid to the use of CRISPRi screening for genome-wide studies and the modular system for identifying many important patterns at the Mobile-CRISPRi genome level. In addition, we discuss the use of CRISPRi to optimize biotechnological production, such as the synthesis of malonyl-CoA, L-lysine, L-glutamate, and other significant products.
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