Lipid-proximal Interactions
Lipid-proximal Interactions - Related Videos
08:53
Using Scaffold Liposomes to Reconstitute Lipid-proximal Protein-protein Interactions In Vitro
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Cited by 6 •
2017
This paper describes a method for assessing the interactions and assemblies of integral membrane proteins in vitro with various partner factors in a lipid-proximal environment.
03:43
Microscale Thermophoresis to Study Protein-Lipid Interactions in Solution
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2025
This video demonstrates microscale thermophoresis for studying the protein-lipid interaction. The assay detects the interaction between molecules by quantifying the thermophoretic movement of fluorescent-labeled proteins in response to a temperature gradient. The fluorescent molecule is mixed with different concentrations of the non-fluorescent lipid molecules, and the mixture of molecules in the solution is loaded into capillaries. A temperature gradient is applied to the samples in the...
03:32
Amplified Luminescent Proximity Homogeneous Assay: A Bead-Based Proximity Assay to Screen Small Molecules Inhibiting Protein-Protein Interactions
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2025
In this video, we demonstrate the amplified luminescent proximity homogeneous assay—a bead-based proximity assay. It utilizes homogeneously-sized acceptor and donor beads, immobilized with two proteins that tend to interact to screen potential small molecules inhibiting protein interactions.
03:08
Detection of Protein-Protein Interactions in Drosophila Larvae Using a Proximity Ligation Assay
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2025
This video demonstrates the visualization of protein-protein interactions at the Drosophila neuromuscular junction (NMJ) using Proximity Ligation Assay (PLA). After isolating the body walls, interacting proteins are probed with primary antibodies and PLA-conjugated secondary antibodies. The proximity of the interacting proteins facilitates the ligation of probes with connector oligonucleotides, forming circular DNA, which is then amplified by rolling circle amplification. Fluorescent probes...
04:49
Proximity Ligation Assay to Study In Situ Protein-Protein Interactions
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2025
This video describes the proximity ligation assay to study in situ protein-protein interactions in nematode cells. The close proximity of the proteins of interest generates the circular DNA template with the help of a PLA probe attached to a secondary antibody. The probe is further amplified using the amplification solution, which produces a long single-stranded DNA followed by the hybridization of the detector probe, enabling the localization of protein-protein interactions in cells.
FAQs
The balance among electrostatic attraction, hydrophobic contact, and recognition at a specific lipid-binding site determines how a molecule associates with a membrane. These contributions can position proteins or peptides at the surface or within the bilayer, while the resulting orientation may influence conformation and activity. Examining their relative roles connects molecular contact patterns with biochemical function.
Changing lipid composition can alter the environment surrounding a membrane-associated molecule and thereby affect its positioning, conformation, or activity. Because lipid-proximal interactions depend on nearby lipids, composition provides a biochemical link between membrane organization and molecular behavior. Studying these changes helps explain how variations in membrane makeup can influence recruitment, enzymatic regulation, and signaling.
A specific lipid-binding site provides a localized molecular feature through which a biomolecule can recognize or associate with particular nearby lipids. More general electrostatic or hydrophobic contacts can also position a molecule without requiring the same type of localized recognition. Distinguishing these possibilities helps researchers interpret whether membrane association depends mainly on overall lipid environment or defined binding regions.
Researchers combine experimental and computational approaches to identify regions that contact lipids and to examine how lipid composition changes molecular behavior. These approaches can connect candidate lipid-binding regions with effects on positioning, conformation, or activity. Using both perspectives supports a more complete analysis of membrane-associated molecules and the biochemical consequences of their lipid environment.
Analysis can show which parts of a protein, peptide, or other biomolecule participate in membrane association and whether altered lipid composition changes its behavior. Interpreting these relationships helps connect molecular contacts with protein organization, enzymatic regulation, and signaling. The resulting information can clarify how membrane composition contributes to functional changes in biochemical systems.
These interactions provide a framework for studying membrane-associated pathways whose behavior may change when lipid environments or molecular contacts are altered. By linking lipid composition with recruitment, organization, enzyme regulation, and signaling, researchers can investigate possible disease mechanisms. The same analysis may identify molecular features relevant to therapeutic targets involving membrane-associated biochemical processes.