Dna-rna Duplex
Dna-rna Duplex - Related Videos
11:42
Iterative Optimization of DNA Duplexes for Crystallization of SeqA-DNA Complexes
0 Views •
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.
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.
16:42
Generation of RNA/DNA Hybrids in Genomic DNA by Transformation using RNA-containing Oligonucleotides
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Cited by 4 •
2010
This work shows how to form an RNA/DNA hybrid at the chromosomal level and reveal transfer of genetic information from RNA to genomic DNA in yeast cells.
13:16
Assessment of DNA Contamination in RNA Samples Based on Ribosomal DNA
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Cited by 26 •
2018
Here, we present a protocol for tracing genomic DNA (gDNA) contamination in RNA samples. The presented method utilizes primers specific for the internal transcribed spacer region (ITS) of ribosomal DNA (rDNA) genes. The method is suited for reliable and sensitive detection of DNA contamination in most eukaryotes and prokaryotes.
00:58
Eukaryotic RNA Polymerases
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2025
RNA Polymerase (RNAP) is conserved in all animals, with bacterial, archaeal, and eukaryotic RNAPs sharing significant sequence, structural, and functional similarities. Among the three eukaryotic RNAPs, RNA Polymerase II is most similar to bacterial RNAP in terms of both structural organization and folding topologies of the enzyme subunits. However, these similarities are not reflected in their mechanism of action. All three eukaryotic RNAPs require specific transcription factors, of which the...
FAQs
Hydrogen bonds form between RNA nucleotides and matching bases in the DNA sequence, allowing the two strands to align selectively. The extent of sequence complementarity therefore influences whether a hybrid forms and how well it is maintained. This pairing principle lets researchers examine specific nucleic acid interactions rather than treating all DNA-RNA contacts as equivalent.
Stability depends on the sequence involved and the conditions in which the hybrid forms. Under some sequence and environmental conditions, a DNA-RNA duplex can be more stable than the corresponding DNA-DNA structure, but this outcome is not universal. Comparing matched hybrids helps researchers evaluate how strand composition and pairing context affect nucleic acid behavior.
An R-loop contains a DNA-RNA hybrid associated with a displaced portion of DNA. Because this structure can arise during genetic information flow, its formation connects RNA production with the physical organization of the genome. Studying R-loops helps geneticists investigate how DNA-RNA interactions influence genome stability rather than viewing hybrids only as transient pairing events.
DNA-RNA duplexes can arise during transcription, replication, and RNA processing. Their occurrence across these processes shows that hybrid formation is connected to several stages of genetic information handling, not just RNA production. Examining when the hybrids appear can help researchers relate sequence pairing to gene expression, genome maintenance, and the processing of RNA molecules.
Researchers analyze these hybrids to examine how RNA interacts with DNA during the movement and regulation of genetic information. Their presence can provide context for transcription and other RNA-related events, while sequence complementarity helps connect a hybrid to a particular genetic region. This makes the structures useful for investigating gene expression and genome regulation.
In antisense research, complementary pairing provides a way to study how one nucleic acid sequence interacts with another related sequence. DNA-RNA duplexes therefore serve as molecular models for examining sequence-specific regulation rather than nonspecific nucleic acid association. These studies can clarify how complementary interactions contribute to controlling genetic information and RNA-related processes.
Detection methods can use complementary sequence pairing to identify or investigate particular nucleic acid interactions. When an RNA sequence matches a DNA target, hybrid formation provides a molecular basis for studying that association. This application extends DNA-RNA duplex research beyond natural genetic processes to analytical approaches focused on sequence recognition and nucleic acid detection.
Comparison reveals how strand composition, sequence, and formation conditions influence hybrid behavior. A DNA-RNA duplex may show different stability from a corresponding DNA-DNA duplex, while its occurrence during transcription, replication, or RNA processing gives it distinct biological context. Such comparisons help researchers interpret whether an observed hybrid reflects regulation, information flow, or genome stability.