A-overhang-dependent repeat expansion determination (ADRED)

In this study we present a quick and easy method for counting trinucleotide repeats by de-oxyadenosine overhang (A-overhang)-dependent repeat expansion determination (ADRED). During standard Taq DNA polymerase-based sequencing reactions, the unterminated sequencing products of short PCR fragments ar...

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Veröffentlicht in:BioTechniques. - 1991. - 45(2008), 5 vom: 22. Nov., Seite 577-80
1. Verfasser: Achmüller, Clemens (VerfasserIn)
Weitere Verfasser: Köhler, Andrea, Bösch, Sylvia, Schneider, Rainer
Format: Online-Aufsatz
Sprache:English
Veröffentlicht: 2008
Zugriff auf das übergeordnete Werk:BioTechniques
Schlagworte:Journal Article Research Support, Non-U.S. Gov't Deoxyadenosines DNA 9007-49-2 Taq Polymerase EC 2.7.7.-
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520 |a In this study we present a quick and easy method for counting trinucleotide repeats by de-oxyadenosine overhang (A-overhang)-dependent repeat expansion determination (ADRED). During standard Taq DNA polymerase-based sequencing reactions, the unterminated sequencing products of short PCR fragments are tagged with a 3'-end A-overhang that is visible as an intense peak in an electropherogram; this allows for easy and precise determination of the fragment length and thus the extent of repeat expansions. ADRED has clear advantages over existing methods, because repeat numbers of both normal and pathogenic (expanded) alleles can be analyzed without using labeled primers or labeled DNA standards. Because ADRED includes a sequencing step, disease-relevant polymorphisms (e.g., CAA interruptions in spinocerebellar ataxia type 2) can simultaneously be detected 
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700 1 |a Bösch, Sylvia  |e verfasserin  |4 aut 
700 1 |a Schneider, Rainer  |e verfasserin  |4 aut 
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