Capillary electrophoresis for capture and concentrating of target nucleic acids by affinity gels modified to contain single-stranded nucleic acid probes

2006 ◽  
Vol 578 (1) ◽  
pp. 31-42 ◽  
Author(s):  
Andrew Chan ◽  
Ulrich J. Krull
Keyword(s):  
Capillary Electrophoresis ◽  
Nucleic Acid ◽  
Nucleic Acids ◽  
Nucleic Acid Probes

scholarly journals Strand displacement and duplex invasion into double-stranded DNA by pyrrolidinyl peptide nucleic acids

2015 ◽  
Vol 13 (35) ◽  
pp. 9223-9230 ◽  
Author(s):  
Peggy R. Bohländer ◽  
Tirayut Vilaivan ◽  
Hans-Achim Wagenknecht
Keyword(s):  
Nucleic Acid ◽  
Nucleic Acids ◽  
Peptide Nucleic Acid ◽  
Peptide Nucleic Acids ◽  
Dna Duplexes ◽  
Strand Displacement ◽  
Nucleic Acid Probes ◽  
Double Stranded Dna

Strand displacement and duplex invasion of DNA duplexes by pyrrolidinyl peptide nucleic acid are demonstrated using the concept of wavelength-shifting nucleic acid probes.

scholarly journals Next-generation fluorescent nucleic acids probes for microscopic analysis of intracellular nucleic acids

2019 ◽  
Vol 49 (1) ◽  
Author(s):  
Akimitsu Okamoto
Keyword(s):  
Gene Expression ◽  
Nucleic Acid ◽  
Nucleic Acids ◽  
Fluorescence Imaging ◽  
Cell Function ◽  
Microscopic Analysis ◽  
Next Generation ◽  
Nucleic Acid Probes ◽  
Specific Fluorescence ◽  
Methylated Dna

AbstractFluorescence imaging of nucleic acids is a very important technique necessary to understand gene expression and the resulting changes in cell function. This mini-review focuses on sequence-specific fluorescence imaging of intracellular RNA and methylated DNA using fluorescent nucleic acid probes. A couple of functional fluorescent nucleic acid probes developed by our laboratory are introduced and the examples of their application to fluorescence imaging of intracellular nucleic acids are described.

scholarly journals A quantitative luminescence assay for nonradioactive nucleic acid probes.

1996 ◽  
Vol 44 (6) ◽  
pp. 657-660 ◽  
Author(s):  
V V Didenko ◽  
P J Hornsby
Keyword(s):  
Alkaline Phosphatase ◽  
Nucleic Acid ◽  
Nucleic Acids ◽  
Light Emission ◽  
Accurate Determination ◽  
Nucleic Acid Probes ◽  
Radioactive Label ◽  
Luminescence Assay ◽  
Antibody Conjugate

In histochemical work with digoxigenin- or biotin-labeled nucleic acid probes, reproducibility of in situ hybridization depends on accurate measurement of the amount of non-radioactive label being used. We describe a rapid and sensitive assay for nonradioactive label incorporated into nucleic acids employing a luminogenic substrate for alkaline phosphatase, CSPD (disodium 3-(4-methoxyspirol¿1,2-dioxetane-3,2'-(5'-chloro)tricyclo [3.3.1.1(3,7)]decan¿-4-yl)phenyl phosphate). An alkaline phosphatase-antibody conjugate was bound to digoxigenin-labeled nucleic acids spotted on nylon membranes. Light emission from the reaction of the bound alkaline phosphatase with CSPD was measured with a luminometer. This method allows an accurate determination of digoxigenin incorporated into nucleic acid probes in the range of 0.5-500 fmol of nonradioactive label.

Nucleic Acid Molecules Prepared by Monolayer Techniques

1972 ◽  
Vol 30 ◽  
pp. 178-179
Author(s):  
Dimitrij Lang
Keyword(s):  
Electron Microscopy ◽  
Standard Deviation ◽  
Nucleic Acid ◽  
Cytochrome C ◽  
Nucleic Acids ◽  
Contour Length ◽  
Sample Standard Deviation ◽  
Molecular Weights ◽  
Length Measurements ◽  
Protein Monolayer

The success of the protein monolayer technique for electron microscopy of individual DNA molecules is based on the prevention of aggregation and orientation of the molecules during drying on specimen grids. DNA adsorbs first to a surface-denatured, insoluble cytochrome c monolayer which is then transferred to grids, without major distortion, by touching. Fig. 1 shows three basic procedures which, modified or not, permit the study of various important properties of nucleic acids, either in concert with other methods or exclusively:1) Molecular weights relative to DNA standards as well as number distributions of molecular weights can be obtained from contour length measurements with a sample standard deviation between 1 and 4%.

Snapshot blotting: The transfer of nucleic acids and nucleoprotein complexes from electrophoresis gels to EM grids

1992 ◽  
Vol 50 (1) ◽  
pp. 762-763
Author(s):  
Stephen D. Jett
Keyword(s):  
Nucleic Acid ◽  
Nucleic Acids ◽  
Nucleic Acid Binding ◽  
Mobility Shift ◽  
Carbon Coated ◽  
Nucleoprotein Complexes ◽  
Mobility Shift Assay ◽  
Protein Nucleic Acid ◽  
Gel Mobility Shift ◽  
Nucleic Acid Interactions

The electrophoresis gel mobility shift assay is a popular method for the study of protein-nucleic acid interactions. The binding of proteins to DNA is characterized by a reduction in the electrophoretic mobility of the nucleic acid. Binding affinity, stoichiometry, and kinetics can be obtained from such assays; however, it is often desirable to image the various species in the gel bands using TEM. Present methods for isolation of nucleoproteins from gel bands are inefficient and often destroy the native structure of the complexes. We have developed a technique, called “snapshot blotting,” by which nucleic acids and nucleoprotein complexes in electrophoresis gels can be electrophoretically transferred directly onto carbon-coated grids for TEM imaging.

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