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Related Concept Videos

Ligand Binding Sites02:40

Ligand Binding Sites

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Proteins are dynamic macromolecules that carry out a wide variety of essential processes; however, the activities of most proteins depend on their interactions with other molecules or ions, known as ligands.
Protein-ligand interactions are quite specific; even though numerous potential ligands surround a cellular protein at any given time, only a particular ligand can bind to that protein. Moreover, a ligand binds only to a dedicated area on the surface of the protein, known as the...
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Transcriptional regulators bind to specific cis-regulatory sequences in the DNA to regulate gene transcription. These cis-regulatory sequences are very short, usually less than ten nucleotide pairs in length. The short length means that there is a high probability of the exact same sequence randomly occurring throughout the genome.  Since regulators can also bind to groups of similar sequences, this further increases the chances of random binding. Transcriptional regulators form...
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Antigen receptors are essential components of the immune system crucial in defending the body against foreign invaders. These receptors are present on the surface of B and T cells, enabling them to recognize antigens and mount an appropriate immune response.
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Many proteins’ biological role depends on their interactions with their ligands, small molecules that bind to specific locations on the protein known as ligand-binding sites. Ligand-binding sites are often conserved among homologous proteins as these sites are critical for protein function.
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Enzyme-linked receptors are cell-surface receptors acting as an enzyme or associating with an enzyme intracellularly. They make excellent drug targets. Drugs can bind to the extracellular ligand-binding domain or directly affect their enzymatic domain and alter their activity.
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Functional DNA as a Molecular Tool in Regulating Immunoreceptor-Ligand Interactions.

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  • 1Institute of Materiobiology, Department of Chemistry, College of Science, Shanghai University, Shanghai 200444, China.

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Functional DNA precisely arranges immune molecules, revealing how immunoreceptors trigger cell responses. This DNA-based approach advances understanding of immune signaling and its therapeutic applications in disease.

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Area of Science:

  • Immunology
  • Biophysics
  • Molecular Biology

Background:

  • Immune responses involve dynamic organization of immunoreceptors at cell interfaces.
  • Understanding the biophysical mechanisms of immunoreceptor signaling is crucial for controlling immune cell fate and function.
  • Existing tools for manipulating receptor-ligand interactions are being enhanced by DNA technologies.

Purpose of the Study:

  • To explore recent advances in using functional DNA to investigate immunoreceptor signaling.
  • To highlight the applications of DNA-mediated regulation of immunoreceptor activation in immunotherapy.
  • To discuss challenges and opportunities in applying functional DNA for immune modulation.

Main Methods:

  • Utilizing functional DNA for controllable assembly and precise arrangement of immune molecules at cell interfaces.
  • Investigating immunoreceptor triggering at the single-molecule level using DNA nanotechnology.
  • Applying DNA-based strategies to regulate immunoreceptor-ligand interactions.

Main Results:

  • Functional DNA enables precise spatial and temporal control over immune molecule organization.
  • DNA-based tools provide novel insights into the biophysical principles of immunoreceptor triggering.
  • Demonstrated potential for DNA-mediated regulation in immunotherapies for major diseases.

Conclusions:

  • Functional DNA is a powerful molecular tool for dissecting complex immunoreceptor signaling pathways.
  • Precise regulation of immune cell activation via functional DNA holds significant promise for therapeutic interventions.
  • Further research is needed to overcome challenges and fully exploit the potential of DNA in immune modulation and immunotherapy.