Receptor-ligand Interaction
Receptor-ligand Interaction - Related Videos
05:57
Biomembrane Force Probe to Quantitate Receptor-Ligand Interactions
0 Views •
2025
In this video, biomembrane force probes (BFPs) are used to measure the forces between receptors and ligands. This technique can detect interactions by monitoring the pressure needed to break the bonds between the pMHC conjugated on the probe beads and the TCRs on the target cells.
06:27
Competitive Binding Assay to Identify Compounds Disrupting Receptor-Ligand Interactions
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2025
In this video, we describe a flow cytometry-based competitive binding assay to detect the interactions between the CXC Chemokine Receptor 4 (CXCR4) and its fluorescently-labeled natural ligand CXC Chemokine Ligand 12 (CXCL12), in the presence of a CXCR4-targeting small molecule. Incubating CXCR4-expressing cells with lower small molecule concentrations allows CXCR4-CXCL12 binding to some extent, which progressively declines upon a gradual increase in small molecule concentrations.
03:35
ELISA-Based Reporter Assay to Study the Receptor-Ligand Interaction in BW Cells
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2025
This video demonstrates the reporter assay-based detection of the receptor-ligand interaction. The successful receptor-ligand interaction activates the downstream signaling pathway, causing the generation and release of cytokines as secretory reporter molecules in the solution, which is confirmed using ELISA.
08:40
An ELISA Based Binding and Competition Method to Rapidly Determine Ligand-receptor Interactions
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Cited by 40 •
2016
The presented protocols describe two enzyme-linked immunosorbent assay (ELISA) based techniques for the rapid investigation of ligand-receptor interactions: The first assay allows the determination of dissociation constant between ligand and receptor. The second assay enables a rapid screening of blocking peptides for ligand-receptor interactions.
12:38
Titration ELISA as a Method to Determine the Dissociation Constant of Receptor Ligand Interaction
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Cited by 29 •
2018
A detailed protocol to perform a titration ELISA is described. Moreover, a novel algorithm is presented to evaluate titration ELISAs and to obtain a dissociation constant of binding of a soluble ligand to a microtiter plate-immobilized receptor.
FAQs
Affinity describes how strongly a ligand binds, whereas specificity reflects how selectively a receptor recognizes one ligand over others. Both arise from molecular complementarity and the combined effects of hydrogen bonds, electrostatic attraction, and hydrophobic interactions. Considering these properties helps explain why related signaling molecules can produce different cellular responses.
The forces involved in receptor-ligand interaction work together to determine whether binding is favorable and selective. Hydrogen bonds, electrostatic attraction, and hydrophobic interactions each contribute to molecular complementarity. If the complementarity between the molecules changes, their affinity or specificity can also change, altering how effectively the receptor detects the signaling molecule.
Binding can cause the receptor protein to undergo a conformational change, meaning its three-dimensional shape shifts after ligand recognition. That structural change can initiate intracellular signaling and connect an extracellular binding event with a cellular response. This mechanism helps explain how receptors translate environmental information into regulated biological activity.
Studying binding reveals how molecular complementarity, affinity, and specificity influence receptor recognition. That information helps researchers clarify cellular mechanisms and design therapeutics that act through receptor systems. Understanding the interaction also provides a basis for evaluating how changes in ligand or receptor properties could affect signaling and biological outcomes.
Receptor-ligand interaction provides a recognition basis for diagnostic assays because selective binding can distinguish a particular signaling molecule from other molecules. Characterizing affinity and specificity helps clarify how reliably that recognition may occur. This makes binding studies relevant when developing assays intended to detect biologically important molecules.
These interactions contribute to neurotransmission, hormone action, immune responses, and cell growth. In each context, ligand recognition allows cells to detect information outside or around them and can initiate signaling through receptor conformational change. Studying the binding event therefore connects molecular recognition with diverse biological functions in biology.