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. 2020 May 4;47(4):413–423. doi: 10.1007/s10295-020-02277-5

Table 2.

Number of exconjugantsa and percentage of survivalb from Cas9 tolerance experiments

Plasmid Theophylline concentration (mM)
0 0.5 1 2
Streptomyces coelicolor M145
pCM2.1 0 N/A N/A N/A
pCM(-cas9) 10,140a/100b 5,640/55 6,000/59 1,800/17
pCMU 13,200/100 8,208/62 7,044/53 3,780/28
pCMUtuf 0 0 0 0
pCMU-4 11,760/100 8,124/69 5,712/49 1,440/12.2
pCMU-4tuf 10,560/100 36/0.003 0 0
Streptomyces lividans TK24
pCM2.1 0 N/A N/A N/A
pCM(-cas9) 19,320/100 16,920/88 12,960/67 3,276/17
pCMU 0 0 0 0
pCMUtuf 0 0 0 0
pCMU-4 18,000/100 12,516/70 9,516/53 1,560/9
pCMU-4tuf 20,304/100 5,760/28 3,480/17 240/0.01

aNumber of exconjugants expressed as number of colony-forming units (CFUs) per conjugation

bPercentage of survival considering number of CFUs in the uninduced condition (0 mM theophylline) as 100%