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Related Concept Videos

Protein-protein Interfaces02:04

Protein-protein Interfaces

Many proteins form complexes to carry out their functions, making protein-protein interactions (PPIs) essential for an organism's survival. Most PPIs are stabilized by numerous weak noncovalent chemical forces. The physical shape of the interfaces determines the way two proteins interact. Many globular proteins have closely-matching shapes on their surfaces, which form a large number of weak bonds. Additionally, many PPIs occur between two helices or between a surface cleft and a polypeptide...
Protein Networks02:26

Protein Networks

An organism can have thousands of different proteins, and these proteins must cooperate to ensure the health of an organism. Proteins bind to other proteins and form complexes to carry out their functions. Many proteins interact with multiple other proteins creating a complex network of protein interactions.
These interactions can be represented through maps depicting protein-protein interaction networks, represented as nodes and edges. Nodes are circles that are representative of a protein,...
Cell Adhesion Molecules - Types and Functions01:20

Cell Adhesion Molecules - Types and Functions

Cell adhesion molecules (CAMs) are pivotal to multicellularity and the coordinated functioning of tissues and organ systems. They enable physical interactions between cells and provide mechanical strength to tissues. They also function as receptors for signal transmission across the plasma membrane. The CAMs are broadly classified into four families - integrins, cadherins, selectins, and immunoglobulin-like CAMs (IgCAMs).
CAM Families
The Integrin family of proteins is primarily  involved in a...
Cells of the Innate Immune Response01:28

Cells of the Innate Immune Response

The innate immune response is an immediate and non-specific response against pathogens, acting swiftly to prevent the spread of infections. The primary cells involved in this response are phagocytes and natural killer (NK) cells.
Phagocytes
Phagocytes police the peripheral tissues by removing cellular debris and responding to the invasion of foreign substances or pathogens. Many phagocytes attack and remove microorganisms even before lymphocytes detect them. The human body has two general...
Immune Surveillance by NK Cells and Phagocytes01:25

Immune Surveillance by NK Cells and Phagocytes

Immune surveillance is an integral part of the innate immune system, involving the continuous monitoring of peripheral tissues to detect and respond to pathogens, infected cells, or cancerous cells. This surveillance is conducted primarily by natural killer (NK) cells and phagocytes, which employ distinct but complementary mechanisms to identify and eliminate threats.
Natural Killer Cells: The Fast Responders
NK cells are large granular lymphocytes found in the blood and lymphatic system. These...

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Related Experiment Video

Updated: Jun 20, 2026

Native Cell Membrane Nanoparticles System for Membrane Protein-Protein Interaction Analysis
07:31

Native Cell Membrane Nanoparticles System for Membrane Protein-Protein Interaction Analysis

Published on: July 16, 2020

Protein-nanoparticle interactions: What does the cell see?

Iseult Lynch, Anna Salvati, Kenneth A Dawson

    Nature Nanotechnology
    |September 8, 2009
    PubMed
    Summary
    This summary is machine-generated.

    Fluorescence correlation spectroscopy quantifies protein interactions on nanoparticle surfaces. This method reveals crucial binding and exchange dynamics for nanomaterial applications.

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    Published on: April 23, 2017

    Area of Science:

    • Biophysics
    • Nanotechnology
    • Surface Chemistry

    Background:

    • Understanding protein behavior on surfaces is crucial for nanomaterial applications.
    • Nanoparticle surfaces present unique environments for protein adsorption and interaction.

    Discussion:

    • Fluorescence correlation spectroscopy (FCS) provides a quantitative approach to study protein dynamics.
    • FCS enables real-time monitoring of protein binding affinity and dissociation rates on nanoparticle surfaces.
    • This technique elucidates the mechanisms governing protein adsorption and desorption kinetics.

    Key Insights:

    • Demonstrated the efficacy of FCS in characterizing protein-surface interactions at the nanoscale.
    • Quantified the binding and exchange behavior of specific proteins on functionalized nanoparticles.
    • Provided insights into the factors influencing protein stability and orientation on nanomaterials.

    Outlook:

    • Future applications of FCS in nanoparticle-based drug delivery and diagnostics.
    • Potential for optimizing nanoparticle functionalization for targeted biological applications.
    • Further exploration of protein dynamics on diverse nanomaterial platforms.