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National Repository of Grey Literature 1 records found  Search took 0.01 seconds. 
Enzymatic Incorporation of Biotin into DNA for DNA Hybridization Analysis and for Sensitive Detection of PCR-Amplified DNA
 Špaček, Jan ; Zenka, Martin ; Haroniková, Lucia ; Havran, Luděk ; Fojta, Miroslav
We present two enzymatical electrochemical assays for DNA analysis. For hybridization analysis we used probes with biotin-14-dC introduced to 3' OH end by terminal transferase. For detection of PCR products we used Deep Vent polymerase to incorporate biotin-14-dCduring PCR. In both cases streptavidin-alkaline phosphatase conjugate was subsequently attached to the incorporated biotins and was used to catalyze dephosphorylation of 1-naphthyl phosphate to 1-naphthol, the electrochemical signal of which was utilized for detection. Compared to the former method, biotin incorporation during PCR offers lower molar detection limits, whereas application of the biotin-tailed probe can provide us with more selective detection.
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