EQ0 quencher can be incorporated at any position within an Oligonucleotide. This quencher has a broad visible absorption but no detectable fluorescence emission making this quencher an useful acceptor in FRET appplications. This quencher can pair with reporter dyes such as AMCA, AMCA-X, DEAC, DEAC-X, MCA, MCC, CF™ 350, CF™405S, CF™405M, Pacific Blue™, Cascade Blue®, Marina Blue®, Alexa Fluor® 350, Alexa Fluor® 405, DyLight® 350, DyLight® 405, ATTO 390, ATTO 425, ATTO 465, iFluor™350, iFLuor™405, BD Horizon V450, BUV395, eFluor®450. A primary amine modified oligonucleotide is used to covalently attach the EQ0 quencher via NHS conjugation chemistry; other cross-linking chemistries are also available depending on particular project specifications. Dual HPLC purification is used to remove failure sequences during first HPLC purification, after labeling, the second HPLC is performed to remove unlabeled oligonucleotides and excessive dye in order to obtain a full length labeled oligonucleotide.
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-20°C To -70°C Oligonucleotides are stable in solution at 4°C for up to 2 weeks. Properly reconstituted material stored at -20°C should be stable for at least 6 months. Dried DNA (when kept at -20°C) in a nuclease-free environment should be stable for years.
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