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. 2018 Mar 10;46(8):4114–4128. doi: 10.1093/nar/gky181

Table 2. Cleavage CC50 values for various compounds on wild-type E. coli DNA gyrase.

Compound CC50 (μM)
ciprofloxacin 0.18
t1 0.75
t2 2.25
t3 1.08
b1 4.45

All these values were obtained with a single preparation of wild-type E. coli DNA gyrase. The CC50 value is defined as the concentration giving half the total amount of cleavage obtained at saturating amount of compound.