A chemiluminescent based Southern blot assay is described for the detection of gene rearrangements in human hematologic malignancies. The DNA probes for regions of rearrangements within the immunoglobulin genes were labeled with digoxigenin-11-dUTP and detected by an antibody conjugated to alkaline phosphatase with Lumiphos 530 as a substrate. This assay has proven more sensitive than colorimet...

CONTENTS Abstract We describe the use of PCR to generate sense and antisense template DNA for nonradioactive in vitro transcription reactions. The resulting digoxigenin-labeled RNA probes can be used in a small-scale Northern hybridization procedure that is performed in microcentrifuge tubes. This kind of Northern approach is especially useful when the expression of several genes is to be initi...

A molecular probe, p3POT, was constructed of PSTVd, PVY, PLRV cDNA fragments introduced into pUC18 vector. Sequencing of the inserts revealed that cloned fragments covered conservative parts of pathogenic genomes. Dot-blot hybridization of digoxigenin-labelled construct to crude extracts from plants infected with different potato viruses proved high sensitivity and specificity of the p3POT prob...

A dot blot hybridization immunoenzymatic assay for the rapid detection of cytomegalovirus DNA in urine samples was developed by using a digoxigenin-labeled probe which was immunoenzymatically visualized by antidigoxigenin Fab fragments labeled with alkaline phosphatase. A total of 516 urine samples from different groups of subjects were analyzed, and the hybridization assay was able to yield re...

Designed "DNA carriers" have been proposed as a new method for nanopore based specific protein detection. In this system, target protein molecules bind to a long DNA strand at a defined position creating a second level transient current drop against the background DNA translocation. Here, we demonstrate the ability of this system to quantify protein concentrations in the nanomolar range. After ...

We have developed microtiter assays for detecting catalysis by type IB topoisomerases and retroviral integrases. Each assay employs model DNA substrates containing biotin in one strand and digoxigenin in another. In each case action of the enzyme results in the formation of a single DNA strand containing both groups. This allows the reaction product to be quantified by capturing biotinylated pr...