Reports

Synthesis of Block Oligonucleotides

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Science  12 Mar 1965:
Vol. 147, Issue 3663, pp. 1310-1311
DOI: 10.1126/science.147.3663.1310

Abstract

The concentration of sodium chloride strongly influences primed polymerization of nucleoside diphosphates by polynucleotide phosphorylase. High concentrations of NaCl allow the addition of only a few nucleotide residues onto the 3' end of the primer. When pure oligonucleotides are used as primers and when the product is fractionated, pure block oligonucleotides can be obtained.

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