Enhancer Promoter Pairing
Enhancer Promoter Pairing - Related Videos
13:47
Enhanced Reduced Representation Bisulfite Sequencing for Assessment of DNA Methylation at Base Pair Resolution
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Cited by 115 •
2015
Enhanced Reduced Representation Bisulfite Sequencing is a method for the preparation of sequencing libraries for DNA methylation analysis based on restriction enzyme digestion combined with cytosine bisulfite conversion. This protocol requires 50 ng of starting material and yields base pair resolution data at GC-rich genomic regions.
10:58
Plant Promoter Analysis: Identification and Characterization of Root Nodule Specific Promoter in the Common Bean
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Cited by 15 •
2017
Promoter expression analyses are crucial to improving the understanding of gene regulation and the spatiotemporal expression of target genes. Herein we present a protocol to identify, isolate, and clone a plant promoter. Further, we describe the characterization of the nodule-specific promoter in the common bean hairy roots.
02:27
DNA Base Pairing
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2020
Erwin Chargaff’s rules on DNA equivalence paved the way for the discovery of base pairing in DNA. Chargaff’s rules state that in a double-stranded DNA molecule, the amount of adenine (A) is equal to the amount of thymine (T); the amount of guanine (G) is equal to the amount of cytosine (C); and the sum of purines, A and G, is equal to the sum of pyrimidines, C and T (i.e., A+G = C+T). Later work by Watson and Crick revealed that in double-stranded DNA, A always forms two hydrogen bonds...
02:40
The Eukaryotic Promoter Region
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2020
The eukaryotic promoter region is a segment of DNA located upstream of a gene. It contains an RNA polymerase binding site, a transcription start site, and several cis-regulatory sequences. The proximal promoter region is located in the vicinity of the gene and has cis-regulatory sequences and the core promoter. The core promoter is the binding site for RNA polymerase and is usually located between -35 and +35 nucleotides from the transcription start site. The distal promoter regions are...
04:01
VSEPR Theory and the Effect of Lone Pairs
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2020
Effect of Lone Pairs of Electrons on Molecule Geometry It is important to note that electron-pair geometry around a central atom is not the same thing as its molecular structure. Molecular structure describes the location of the atoms, not the electrons. The geometry that includes all electron pairs is the electron-pair geometry. The electron-pair geometries describe all regions where electrons are located, bonds as well as lone pairs. The structure that includes only the placement of the...
FAQs
Enhancer-promoter pairing depends on coordinated molecular and structural events. Sequence-specific transcription factors bind enhancer DNA and recruit coactivators, creating a regulatory platform. At the same time, chromatin folding brings the enhancer near the promoter, where the assembled regulatory complex can influence RNA polymerase II initiation. This coordination helps connect regulatory information in distal DNA with transcriptional output.
Boundary elements and three-dimensional genome organization help determine which regulatory contacts are possible. By constraining chromatin interactions, they can limit the reach of an enhancer or organize the genomic space in which a promoter encounters regulatory elements. Consequently, interpreting enhancer-promoter pairing requires attention to surrounding genome architecture, not only to the enhancer's sequence or distance from a gene.
The relevant pairing can vary with cellular state, helping produce cell-type-specific gene expression. During development and differentiation, regulatory enhancers and promoters participate in gene-control programs that differ between cell types. Studying these relationships therefore links three-dimensional genome organization to changing transcriptional patterns and helps explain how distinct biological identities emerge from the same genome.
Mapping these relationships links distal regulatory enhancers with the promoters they may influence, allowing researchers to interpret regulatory DNA in relation to gene expression. The resulting view is useful for explaining cell-type-specific transcription and changes associated with development or differentiation. It also places individual regulatory elements within a broader model of genome function rather than treating them as isolated sequences.
A noncoding variant may be located outside a gene yet still be relevant if it affects an enhancer that is functionally paired with that gene's promoter. Pairing maps help connect disease-associated regulatory changes to potential gene targets, providing a way to interpret regulatory variation through gene-control relationships rather than coding sequence alone.
Genome editing can produce outcomes that are difficult to interpret when regulatory DNA is considered in isolation. Knowing enhancer-promoter relationships helps researchers ask whether an edited enhancer or promoter has altered a regulatory connection and the associated influence on transcription. This context supports more focused interpretation of genome-editing outcomes and their consequences for gene regulation.