Abstract
A new procedure for non-radioactive detection of single-copy DNA-DNA hybrids combines an existing non-radioactive labeling and detection kit with a new substrate AMPPD for the enzyme alkaline phosphatase. The main advantages of this procedure are the possibility to reuse the blots easily and the much shorter detection time compared to radioactive detection methods.
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Abbreviations
- Ac:
-
acetate
- AMPPD:
-
3-(2′-spiroadamantane)-4-methoxy-4-(3″-phosphoryloxy)phenyl-1,2-dioxetane disodium salt
- AP:
-
alkaline phosphatase
- BCIP:
-
5-bromo-4-chloro-3-indolyl phosphate
- anti-dig:
-
antibody against digoxigenin
- NBT:
-
nitroblue tetrazolium salt
References
Allefs, J.J.H.M., E.M.J. Salentijn, F.A. Krens and G.J.A. Rouwendal. 1990. Optimization of non-radioactive Southern blot hybridization: single-copy detection and reuse of blots. Nucleic Acids Res. 18:3099–3100.
Bronstein I. and P. McGrath. 1989. Chemiluminescence lights up. Nature 338:599–600.
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Kreike, C.M., de Koning, J.R.A. & Krens, F.A. Non-radioactive detection of single-copy DNA-DNA hybrids. Plant Mol Biol Rep 8, 172–179 (1990). https://doi.org/10.1007/BF02669513
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DOI: https://doi.org/10.1007/BF02669513