At the growing end of a DNA chain,DNA polymerase catalyzes the formation of a disulfide bond between the 3'-OH group of the deoxyribose on the last nucleotide and the 5'-phosphate of the dNTP precursor.

Question

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DNA polymerase catalyzes the formation of a phosphodiester bond between the 3'-OH group of the deoxyribose on the last nucleotide and the 5'-phosphate of the incoming dNTP precursor. There is no involvement of disulfide bonds in this process.

At the Growing End of a DNA Chain,DNA Polymerase Catalyzes