Ciprofloxacin acts on
Ans. is 'b' i.e., DNA gyrase Major mechanism of action of fluoroquinolone is inhibition of bacterial enzyme DNA gyrase.Recent evidence indicates that in gram positive bacterias, the major target is topoisomerase IV.So greater affinity for topoisomerase IV may confer higher potency against gram positive bacteria.
DNA histone proteins
DNA gyrase
Camp
mRNA polymerase
Anti Microbial