Protein Stability
Protein Stability - Related Videos
04:46
Synthesis of Nanodisc-Stabilized Membrane Protein Antigens Using a Cell-Free System
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2025
Source: Gilmore, S. F., et al. Cell-Free Scaled Production and Adjuvant Addition to a Recombinant Major Outer Membrane Protein from Chlamydia muridarum for Vaccine Development. J. Vis. Exp. (2022)This video demonstrates the cell-free synthesis of nanodisc-stabilized membrane protein antigens using a dual-compartment system. The device maintains optimal conditions for efficient protein synthesis, proper folding, and stable integration into nanodiscs.
10:21
A Technique for Stabilizing Membrane Proteins in Nanodiscs
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2026
This study outlines the procedure for reconstituting the membrane protein TWIK-related acid-sensitive K+ channel 2 (Task2) into nanodiscs. The successful assembly was confirmed by single-particle cryo-electron microscopy, which yielded well-defined two-dimensional class averages.
01:53
RNA Stability
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2019
Intact DNA strands can be found in fossils, while scientists sometimes struggle to keep RNA intact under laboratory conditions. The structural variations between RNA and DNA underlie the differences in their stability and longevity. Because DNA is double-stranded, it is inherently more stable. The single-stranded structure of RNA is less stable but also more flexible and can form weak internal bonds. Additionally, most RNAs in the cell are relatively short, while DNA can be up to 250 million...
08:13
Differential Scanning Calorimetry — A Method for Assessing the Thermal Stability and Conformation of Protein Antigen
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Cited by 117 •
2017
Differential scanning calorimetry measures the thermal transition temperature(s) and total heat energy required to denature a protein. Results obtained are used to assess the thermal stability of protein antigens in vaccine formulations.
09:45
Measuring Protein Stability in Living Zebrafish Embryos Using Fluorescence Decay After Photoconversion (FDAP)
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Cited by 14 •
2015
Protein levels in cells and tissues are often tightly regulated by the balance of protein production and clearance. Using Fluorescence Decay After Photoconversion (FDAP), the clearance kinetics of proteins can be experimentally measured in vivo.
FAQs
Protein stability reflects a balance among several interactions rather than one dominant force. Hydrogen bonds and ionic forces help maintain structural organization, hydrophobic interactions favor the arrangement of nonpolar regions, and disulfide bonds can provide additional support. The relative contribution of these interactions helps determine whether a protein remains properly folded and biologically functional in a particular environment.
Environmental conditions can shift the balance of interactions that supports a protein’s folded state. Changes in temperature, pH, solvent composition, or other chemical conditions may weaken stabilizing forces, promote unfolding, or encourage aggregation. Comparing protein behavior across these conditions helps identify environments that preserve structure and function, which is important for cellular studies and biotechnology.
Mutations can alter the interactions that support a protein’s native structure, changing how it responds to its chemical environment. If the resulting protein becomes more prone to unfolding or aggregation, it may lose biological function or form improperly organized structures. Studying these stability changes helps connect molecular alterations with misfolding-related disorders in biology.
Researchers can examine how well a protein retains its native structure and biological function when temperature, pH, solvent composition, or chemical environment changes. Observing signs of unfolding or aggregation across those conditions reveals which factors challenge the protein and which preserve it. This comparison provides a basis for selecting suitable conditions in cellular research, purification, or formulation.
Purification and formulation require conditions that help a protein remain properly folded and functional while it is handled outside its original biological setting. Monitoring the effects of solvent composition, pH, temperature, and other chemical conditions can help identify environments that limit unfolding or aggregation. Stable preparations are consequently important for maintaining protein quality in biotechnology.
Protein stability provides a target for improving how engineered enzymes and therapeutic proteins withstand environmental challenges. By understanding which interactions and conditions preserve folding and function, researchers can guide the development of more robust proteins. This knowledge also supports drug development and the design of biotherapeutics whose structural integrity is better maintained during their intended use.