What is the definition of a dominant trait in biology? What is the difference between biology and AP biology? What is the difference between molecular biology and cell biology?
DNA gyrase, often referred to simply as gyrase, is an enzyme that relieves strain while double-strand DNA is being unwound by helicase. It is also known as DNA topoisomerase II. This causes negative supercoiling of the DNA. Bacterial DNA gyrase is the target of many antibiotics, including nalidixic acid, novobiocin, and ciprofloxacin.
See function of DNA. Most bacteria, become resistant to antibiotics by way of one or more of the following mechanisms that are coded for by genes in the bacterial chromosome or in plasmids (def): 1. Producing an enzyme capable of inactivating the antibiotic; 2.ost bacteria, however, become resistant to antibiotics as a result of mutation or genetic recombination. Mutation (def) in bacterial DNA can alter the order of nucleotide bases in a gene and alter that gene product.