Which is also called molecular glue

Enzyme DNA ligase is also called as molecule or glue, as it works to repair broken DNA by joining two nucleotides in a DNA strand. It is commonly used in genetic engineering to do the reverse of restriction enzyme, i.e,. to join together complementary restriction fragments. DNA gyrase is an enzyme of class topoisomerase that relieves torque or strain in DNA during DNA replication. DNA helicase unwinds the double helix to make site of DNA synthesis. DNA polymerase catalyses formation of new DNA on template strand.