Featured Articles and Protocols

  • Coronavirus qPCR Primer and probe sets for the detection of SARS-CoV-2 (Corona Virus), with additional real-time RT-PCR, RT-qPCR and supporting reagents available.
  • Learn about the steps in phosphoramidite solid-phase method of Oligonucleotide Synthesis method that we use for DNA oligonucleotide manufacturing.
  • Annealing is the process of heating and cooling two single-stranded oligonucleotides with complementary sequences. Heat breaks all hydrogen bonds, and cooling allows new bonds to form between the sequences.

Technical Literature

  • Learn about the steps in phosphoramidite solid-phase method of Oligonucleotide Synthesis method that we use for DNA oligonucleotide manufacturing.
  • This technical bulletin will help you select the best purification option for your oligo, depending upon the oligo type and its intended application.
  • DNA absorbs ultraviolet light due to its highly conjµgated nature. DNA may thus be easily quantitated in a UV spectrometer.
  • Several phosphate backbone variants have been developed in an attempt to alter the chemical properties of native-state DNA and therefore overcome the two major challenges involved with using oligonucleotides in vivo.
  • The ultimate goal of most antisense research is to develop therapeutic agents for diseases such as diabetes, cancer, and HIV/ AIDS. Phosphorothioate oligonucleotides (commonly referred to as S-oligos) are often the molecules of choice because of their resistance to cellular nuclease degradation.
  • There is a wide selection of possible custom probes that can be used for qPCR, and each has advantages for different applications.
  • Digital PCR (dPCR) is an end-point PCR method that is used for absolute quantification and for analysis of minority sequences against a background of similar majority sequences.
  • Frequently asked questions about Locked Nucleic Acids (LNA)
  • Two commonly used quenchers, TAMRA™ and DABYCL, limit the ultimate sensitivity and flexibility of qPCR. TAMRA is not a dark quencher and therefore contributes to an overall increase in background because of its own native fluorescence. DABCYL, though a dark quencher, has an inadequate absorption footprint that overlaps very poorly with reporter dyes emitting above 480 nm.
  • Oligonucleotide Handling & Stability is a techniques in order to ensure trouble-free experiments. Proper storage of your oligo will maximize its shelf life, allowing you to get the most use from the oligo
  • Calculate the melting temperature (Tm) of oligonucleotides using theoretical method like the nearest neighbor or the basic method. The DNA Tm is the temperature at which 50% of the oligonucleotide is duplexed with its perfect complement and 50% is free in solution.

Protocols, Procedures, Safety & Quality

Product Citations & Our Publications

Guo Y, Ye JY, Divin C, Huang B, Thomas TP, Baker, Jr. JR, Norris TB. 2010. Real-Time Biomolecular Binding Detection Using a Sensitive Photonic Crystal Biosensor. Anal. Chem.. 82(12):5211-5218. http://dx.doi.org/10.1021/ac100576y
Kudla G, Murray AW, Tollervey D, Plotkin JB. 2009. Coding-Sequence Determinants of Gene Expression in Escherichia coli. Science. 324(5924):255-258. http://dx.doi.org/10.1126/science.1170160
Lacroix-Lamandé S, Rochereau N, Mancassola R, Barrier M, Clauzon A, Laurent F. Neonate Intestinal Immune Response to CpG Oligodeoxynucleotide Stimulation. PLoS ONE. 4(12):e8291. http://dx.doi.org/10.1371/journal.pone.0008291
Omumi A, Beach DG, Baker M, Gabryelski W, Manderville RA. 2011. Postsynthetic Guanine Arylation of DNA by Suzuki?Miyaura Cross-Coupling. J. Am. Chem. Soc.. 133(1):42-50. http://dx.doi.org/10.1021/ja106158b
Pandey M, Syed S, Donmez I, Patel G, Ha T, Patel SS. 2009. Coordinating DNA replication by means of priming loop and differential synthesis rate. Nature. 462(7275):940-943. http://dx.doi.org/10.1038/nature08611
Wang Z, Elbaz J, Remacle F, Levine RD, Willner I. 2010. All-DNA finite-state automata with finite memory. Proceedings of the National Academy of Sciences. 107(51):21996-22001. http://dx.doi.org/10.1073/pnas.1015858107
Yang L, Kemadjou JR, Zinsmeister C, Bauer M, Legradi J, Müller F, Pankratz M, Jäkel J, Strähle U. 2007. Transcriptional profiling reveals barcode-like toxicogenomic responses in the zebrafish embryo. Genome Biol. 8(10):R227. http://dx.doi.org/10.1186/gb-2007-8-10-r227
Zykovich A, Korf I, Segal DJ. 2009. Bind-n-Seq: high-throughput analysis of in vitro protein?DNA interactions using massively parallel sequencing. 37(22):e151-e151. http://dx.doi.org/10.1093/nar/gkp802
Okabe K, Harada Y, Zhang J, Tadakuma H, Tani T, Funatsu T. 2011. Real time monitoring of endogenous cytoplasmic mRNA using linear antisense 2?-O-methyl RNA probes in living cells. 39(4):e20-e20. http://dx.doi.org/10.1093/nar/gkq1196


Beginning May 8, 2022, BHQ™ (Black Hole Quencher™) 1 and 2 will no longer be available as a modification to Custom DNA Oligos and Custom qPCR Probes. The replacements will be BXQ™ (Block All Quencher™) 1 and 2. Information about the BXQ dark quenchers will be added from time-to-time to key oligo landing pages up until the date of change. As these key landing pages are updated, this message will be updated to provide links to the new information. If you have any questions, please contact your local company representative.

Alternatively, to learn more about BXQ, please visit the manufacturer’s website: BXQ | AAT Bioquest.