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.
Point mutations will only affect a aingle amino acid in a protein chain, which could or could not affect the actual protein. If a point mutation occured and coded for a stop c â¦ odon, that would be an example of one way it could affect the protein chain. change in a single nitrogenous base can change the entire structure of a protein because a change in a single amin â¦ o acid can affect the shape of the protein. A frameshift mutation is a mutation in which a single base is added or deleted from DNA.