Nucleic Acids Research, Vol 25, Issue 23 4835-4841, Copyright © 1997 by Oxford University Press
T Horn, CA Chang and MS Urdea
The divergent synthesis of branched DNA (bDNA) comb structures is
described. This new type of bDNA contains one unique oligonucleotide, the
primary sequence, covalently attached through a comb-like branch network to
many identical copies of a different oligonucleotide, the secondary
sequence. The bDNA comb structures were assembled on a solid support and
several synthesis parameters were investigated and optimized. The bDNA comb
molecules were characterized by polyacrylamide gel electrophoretic methods
and by controlled cleavage at periodate- cleavable moieties incorporated
during synthesis. The developed chemistry allows synthesis of bDNA comb
molecules containing multiple secondary sequences. In the accompanying
article we describe the synthesis and characterization of large bDNA combs
containing all four deoxynucleotides for use as signal amplifiers in
nucleic acid quantification assays.
ARTICLES
An improved divergent synthesis of comb-type branched oligodeoxyribonucleotides (bDNA) containing multiple secondary sequences
Nucleic Acids Diagnostics, Chiron Diagnostics, Emeryville, CA 94608, USA. thorn@chiron.com
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