Target Binding Duplex
Target Binding Duplex - Related Videos
04:10
Helicase Activity Measurement of a Target Protein Using Biotin-Labeled RNA Duplexes
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2025
In this video, we demonstrate the procedure to determine the helicase activity of a target protein to unwind the biotin-labeled dsRNA substrate. The activity of the enzyme was identified by analyzing the electrophoretic mobility shift, followed by a chemiluminescence assay using chemiluminescent enzyme-conjugated streptavidin.
08:45
Duplex Digital PCR for Simultaneous Quantification of Dual Genetic Markers
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2025
In this video, we demonstrate the duplex digital PCR (ddPCR) technique — a modification of the traditional PCR technique that is useful in detecting two different genetic markers simultaneously. A single PCR reaction is partitioned into nanoliter-sized emulsified droplets that are independently amplified, and the detection of differently colored fluorescence amplification signals from the fraction of droplets is used to compute the initial concentration of the target sequences.
11:42
Iterative Optimization of DNA Duplexes for Crystallization of SeqA-DNA Complexes
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2012
Crystal structure of protein–DNA complexes can provide insight into protein function, mechanism, as well as, the nature of the specific interaction. Here, we report how to optimize the length, sequence and ends of duplex DNA for co-crystallization with Escherichia coli SeqA, a negative regulator of replication initiation.
07:05
Chromatin Immunoprecipitation to Identify Target Protein Binding Sites on Genomic DNA
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2025
In this video, we demonstrate the chromatin immunoprecipitation technique to identify protein binding sites on specific regions of the genomic DNA of oligodendrocyte precursor cells via the selective immunoprecipitation of protein-bound chromatin fragments. This method helps to study the interaction of several regulatory proteins, including transcription factors involved in gene regulation.
07:25
In Vitro Methods for Comparing Target Binding and CDC Induction Between Therapeutic Antibodies: Applications in Biosimilarity Analysis
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Cited by 2 •
2017
This protocol describes the in vitro comparison of two key functional characteristics of rituximab: target binding and complement-dependent cytotoxicity (CDC) induction. The methods were employed for a side-to-side comparison between reference rituximab and a rituximab biosimilar. These assays can be employed during biosimilar development or as a quality control in their production.
FAQs
Hydrogen bonding and base stacking contribute different parts of duplex stability. Sequence-specific base pairing aligns complementary nucleotides, while stacking interactions between neighboring bases further stabilize the assembled structure. Together, these forces support selective recognition of the intended nucleic acid sequence and allow researchers to examine how oligonucleotide design affects binding.
They determine whether a duplex forms and how strongly it is maintained under the selected experimental conditions. Controlling these variables helps researchers compare hybridization strength across designed oligonucleotides, assess sequence-selective interactions, and optimize probe or oligonucleotide performance for a chosen nucleic acid target in a reproducible way.
Complementarity determines which target sequence can align with the designed oligonucleotide for productive base pairing. This sequence dependence gives the duplex its selective recognition behavior, rather than treating all nucleic acids as equivalent binding partners. In biochemistry, that property supports probe design and the study of sequence-selective molecular interactions.
Hybridization strength provides a way to characterize how effectively a designed oligonucleotide associates with its complementary target under defined conditions. Measuring or comparing that strength can guide sequence and condition optimization, while also revealing whether a candidate probe forms a sufficiently stable complex for recognition, measurement, or modulation of the target.
A basic study begins by selecting a designed oligonucleotide and its intended complementary target, then examining duplex formation under suitable ionic and temperature conditions. Researchers can compare the resulting hybridization strength among designs. This workflow supports optimization of probe sequences and evaluation of sequence-selective interactions in a biochemical experiment.
These experiments can indicate whether a designed oligonucleotide recognizes its intended nucleic acid sequence and how strongly the resulting complex is maintained under the selected conditions. The information can be used to assess hybridization strength, refine oligonucleotide or probe design, and establish a molecular basis for measuring or modulating a specific target.
Target binding duplexes are relevant to molecular diagnostics, gene regulation, and nucleic acid-based therapeutics because sequence-selective recognition can connect a designed oligonucleotide with a specific nucleic acid target. In each setting, studying duplex formation helps relate molecular binding to measurement or modulation, while biochemistry provides the framework for analyzing the underlying interactions.