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Touchdown-PCR
ββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββ
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Die Touchdown-PCR ist eine Variante der Polymerasekettenreaktion, bei der in jedem Zyklus der Amplifikation die Hybridisierungstemperatur leicht abgesenkt wird, um in Mischungen spezifischere Bindungen zwischen Vorlage und Primern zu erzielen.cite-ref-pmid1861999-1-0[1]
Contents
β’ Eigenschaften
β’ Einzelnachweise
ββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββ
Eigenschaften
Bei der Touchdown-PCR wird im ersten Zyklus die maximale Hybridisierungstemperatur verwendet.cite-ref-pmid8679209-2-0[2] In jedem weiteren Zyklus wird sie um ein bis zwei Grad Celsius abgesenkt. Sie wird eingesetzt, wenn mehrere Primer oder mehrere Bindungsstellen fΓΌr Primer und dementsprechend mehrere Hybridisierungstemperaturen vorkommen, wie z. B. degenerierte Primermischungen.cite-ref-pmid8068332-3-0[3]cite-ref-pmid39955471-4-0[4]
Einzelnachweise
cite-note-pmid1861999-11. β R. H. Don, P. T. Cox, B. J. Wainwright, K. Baker, J. S. Mattick: 'Touchdown' PCR to circumvent spurious priming during gene amplification. In: Nucleic acids research. Band 19, Nummer 14, Juli 1991, S. 4008, doi:10.1093/nar/19.14.4008, PMID 1861999, PMC 328507 (freier Volltext).
cite-note-pmid8068332-33. β K. H. Roux: Using mismatched primer-template pairs in touchdown PCR. In: BioTechniques. Band 16, Nummer 5, Mai 1994, S. 812β814, PMID 8068332.
cite-note-pmid39955471-44. β S. M. Hussain, A. Sharif, F. Bashir, S. Ali, A. Javid, A. I. Hussain, A. Ghafoor, M. A. Alshehri, A. Naeem, E. Naeem, M. Amjad: Polymerase Chain Reaction: A Toolbox for Molecular Discovery. In: Molecular Biotechnology. [elektronische VerΓΆffentlichung vor dem Druck] Februar 2025, doi:10.1007/s12033-025-01390-z, PMID 39955471 (Review).