Journal: Proceedings of the National Academy of Sciences of the United States of America
Article Title: Alkaline-mediated differential interaction (AMDI): A simple automatable single-nucleotide polymorphism assay
Figure Lengend Snippet: Effect of individual constituents of the PCR on background fluorescence in the presence or absence of CABS. Each column represents the result of three PCRs performed: 1, in the absence of Taq Gold polymerase, but in the presence of oligonucleotides and template; 2, in the absence of Taq Gold polymerase and template, but in the presence of oligonucleotides; 3, in the absence of Taq Gold polymerase, template, and one oligonucleotide but in the presence of one oligonucleotide; 4, in the absence of primers and template, but in the presence of Taq Gold polymerase; 5, in the absence of template, but in the presence of both primers and polymerase; 6, as in case 3, except in the presence of the alternative primer of the primer combination; 7, in which specific amplicon is produced; and 8, in which no amplicon is expected. Conditions 1, 2, and 6 show the effect of CABS in reducing the background fluorescence caused by the single-strand oligonucleotides. The reaction with CABS in conditions 5 and 8 shows the residual effect caused by primer/dimers, in the case of 8 with additional template DNA.
Article Snippet: The reaction mixture consisted of 67 mM Tris⋅HCl (pH 8.4) at 25°C, 16.6 mM ammonium sulfate, 2 mM magnesium chloride, 0.01% (vol/vol) Tween 20, 200 μM of each dNTP, 1 μM of each primer, and 0.5 units Hotstart Taq DNA polymerase (Qiagen) or AmpliTaq Gold (Perkin–Elmer).
Techniques: Polymerase Chain Reaction, Fluorescence, Amplification, Produced