phosphodiester bond

Medical Dictionary

phosphodiester bond phos·pho·di·es·ter bond (fŏs'fō-dī-ěs'tər)
n.
The covalent chemical bond that holds together the polynucleotide chains of RNA and DNA by joining a specific carbon in the phosphate group in a sugar having five carobs, such as ribose, to a specific carbon in the hydroxyl group of the five-carbon sugar in the adjacent nucleotide.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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