Supramolecular Structure

Supramolecular structure refers to the organized arrangement of molecules held together by noncovalent interactions rather than covalent bonds, enabling complex biological systems to form and function. Hydrogen bonding, electrostatic attraction, hydrophobic effects, van der Waals forces, and π–π interactions guide reversible assembly into structures such as protein complexes, lipid membranes, nucleic-acid assemblies, and molecular capsules. In biological techniques, analyzing or engineering these structures helps researchers study molecular recognition, self-assembly, transport, and signaling, while supporting applications including biosensor design, drug delivery, biomaterials, and nanotechnology. Because these assemblies respond to their chemical environment, they provide adaptable platforms for investigating dynamic cellular processes.

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Research

JoVE Journal - Chemistry

Synthesis and Characterization of Supramolecular Colloids

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Cited by 3 •

2016

A protocol for the synthesis and characterization of colloids coated with supramolecular moieties is described. These supramolecular colloids undergo self-assembly upon the activation of the hydrogen-bonds between the surface-anchored molecules by UV-light.

Research

JoVE Journal - Engineering
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Controlling the Size, Shape and Stability of Supramolecular Polymers in Water

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Cited by 13 •

2012

The goal of this experiment is to determine and control the size, shape and stability of self-assembled discotic amphiphiles in water. For aqueous based supramolecular polymers such level of control is very difficult. We apply a strategy using both repulsive and attractive interactions. The experimental techniques applied to characterize this system are broadly applicable.

Directed Assembly of Elastin-like Proteins into defined Supramolecular Structures and Cargo Encapsulation In Vitro

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Cited by 4 •

2020

At the interface of organic and aqueous solvents, tailored amphiphilic elastin-like proteins assemble into complex supramolecular structures such as vesicles, fibers and coacervates triggered by environmental parameters. The described assembly protocols yield Protein Membrane-Based Compartments (PMBCs) with tunable properties, enabling the encapsulation of various cargo.

An Injectable and Drug-loaded Supramolecular Hydrogel for Local Catheter Injection into the Pig Heart

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Cited by 21 •

2015

Supramolecular hydrogelators based on ureido-pyrimidinones allow full control over the macroscopic gel properties and the sol–gel switching behavior using pH. Here, we present a protocol for formulating and injecting such a supramolecular hydrogelator via a catheter delivery system for local delivery directly in relevant areas in the pig heart.

Studying the Supramolecular Organization of Photosynthetic Membranes within Freeze-fractured Leaf Tissues by Cryo-scanning Electron Microscopy

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Cited by 19 •

2016

Here we describe a procedure for studying freeze-fractured plant tissues. High-pressure frozen leaf samples are freeze-fractured and double-layer coated, yielding well preserved frozen-hydrated samples that are imaged using the cryo-scanning electron microscope at high magnifications with minimal beam damage.

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