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Nucleic Acids Research, 1978, Vol. 5, No. 7 2297-2311
© 1978

Articles

Simplified methods for large scale enzymatic synthesis of oligoribonucleotides

Betty Wai-King Shum and Donald M. Crothers

Department of Chemistry, Yale University New Haven, CT 06520, USA

Received May 15, 1978. We report simplified methods for large scale enzymatic synthesis of oligoribonucleotides using polynucleotide phosphorylase. The main features of the method are use of RPC-5 chromatography, including chromatography at two pH values to deal with the problem of primer phosphorolysis, rapid dialysis for large scale desalting, simplified methods for enzyme removal, and high resolution 1H and 31P NMR for product identification and demonstration of purity. The capacity of the method is adequate to allow beginning with grams of material in the first polymerization step, so that product yields of several milligrams, sufficient for many physical studies, are possible after as many as three separate polymerization reactions.


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