MSMEG_0918 is not Essential for the Growth of .

Copper homeostasis plays a crucial role in mycobacteria. In , Rv0474 is a copper-responsive regulator with a copper-binding motif but its homolog in , MSMEG_0918, lacks the copper-binding motif. We generated MSMEG_0918 knockdown strains of using CRISPRi. We confirmed the strains had varying levels of expression using RT-PCR. We demonstrated that MSMEG_0918 under-expression did not alter the growth of in standard aerobic culture as compared to the wild-type. Our knockdown strains (CHROME1 and CHROME2) could be further used towards understanding the role of MSMEG_0918 in .