Supercoiling in bacteria is typically introduced by enzymes called
A) gyrases.
B) helicases.
C) ligases.
D) polymerases.
E) endonucleases.

Question

Quizplus · Accepted Answer

Gyrases are enzymes that are responsible for introducing supercoiling into bacterial DNA. They do this by cutting the DNA strands, allowing them to rotate around each other, and then resealing them back together. This results in the twisting and coiling of the DNA molecule, which can help to compact it and regulate gene expression. Helicases, ligases, polymerases, and endonucleases all play important roles in DNA replication, repair, and modification, but they do not typically introduce supercoiling into bacterial DNA.

Supercoiling in Bacteria Is Typically Introduced by Enzymes Called