Promoter Sequence Recognition
Promoter Sequence Recognition - Related Videos
08:04
DNA Sequence Recognition by DNA Primase Using High-Throughput Primase Profiling
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Cited by 3 •
2019
Protein binding microarray (PBM) experiments combined with biochemical assays link the binding and catalytic properties of DNA primase, an enzyme that synthesizes RNA primers on template DNA. This method, designated as high-throughput primase profiling (HTPP), can be used to reveal DNA-binding patterns of a variety of enzymes.
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...
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.
11:55
Physiological Correlates of Emotion Recognition
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2023
Source: Laboratories of Jonas T. Kaplan and Sarah I. Gimbel—University of Southern California The autonomic nervous system (ANS) controls the activity of the body's internal organs and regulates changes in their activity depending on the current environment. The vagus nerve, which innervates many of the internal organs, is an important part of the system. When our brain senses danger, vagal tone is inhibited, leading to a set of changes in the body designed to make us more prepared to fight or...
09:04
Sequence-specific and Selective Recognition of Double-stranded RNAs over Single-stranded RNAs by Chemically Modified Peptide Nucleic Acids
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Cited by 12 •
2017
We report the protocols for the synthesis and purification of Peptide Nucleic Acid (PNA) oligomers incorporating modified residues. The biochemical and biophysical methods for the characterization of the recognition of RNA duplexes by the modified PNAs are described.
FAQs
Recognition depends on complementary interactions between promoter motifs in DNA and the molecules that bind them. Transcription factors and RNA polymerase identify these sequence features near the transcription start site, where their binding helps position the polymerase. This spatial arrangement gives transcription a defined starting point rather than allowing RNA synthesis to begin indiscriminately across the gene.
Regulatory proteins can strengthen or inhibit assembly at a promoter. When they support the interaction of transcription factors and RNA polymerase, they promote a configuration favorable for initiation; inhibitory proteins reduce or interfere with that assembly. This control provides a molecular route for adjusting whether a gene is transcribed, rather than changing the underlying promoter sequence itself.
Recognition links DNA sequence features with the regulatory state of a cell. Signals can influence regulatory proteins, which in turn affect assembly near particular promoters. As a result, different cells or developmental contexts can activate different genes even though the process relies on the same general transcriptional machinery. This link helps explain coordinated development and specialized cellular responses.
Recognition is an upstream organizing step, whereas initiation is the point at which RNA synthesis begins. Binding at promoter motifs positions RNA polymerase near the transcription start site and helps recruit the machinery needed for initiation. Separating these stages clarifies how sequence identification is converted into a functional transcription event and where regulatory proteins can influence the transition.
They would examine promoter motifs, their location near the transcription start site, interactions with transcription factors and RNA polymerase, and the effect of regulatory proteins on assembly. Researchers can then relate these features to whether transcription begins and how it is controlled. This framework connects DNA sequence information with gene-expression outcomes.
It can help researchers connect particular promoter motifs and regulatory interactions with the placement and control of transcription initiation. That knowledge supports the design of synthetic promoters, whose sequence features can be considered in relation to transcription-factor binding, RNA-polymerase positioning, and regulatory activation or inhibition. The broader goal is to direct gene expression through engineered regulatory sequences.
Researchers can use this framework to investigate how promoter motifs, transcription-factor interactions, and regulatory proteins influence gene-expression control in disease-related studies. Examining assembly near the transcription start site helps connect molecular regulation with the decision to initiate transcription. This makes promoter recognition relevant for tracing how altered control of gene expression may participate in disease mechanisms.