phosphodiesterbond

phos·pho·di·es·ter bond (fŏs'fō-dī-ĕsʹtər) n.

The covalent chemical bond that holds together the polynucleotide chains of RNA and DNA by joining a carbon in the pentose sugar of one nucleotide to a carbon in the pentose sugar of the adjacent nucleotide.

  [phospho- + di-¹ + ester.]

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