Protein Structural Dynamics
Protein Structural Dynamics - Related Videos
09:51
Investigating Protein Sequence-structure-dynamics Relationships with Bio3D-web
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Cited by 2 •
2017
A protocol for the online investigation of protein sequence-structure-dynamics relationships using Bio3D-web is presented.
12:03
Dynamics of Structures
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2023
Source: Roberto Leon, Department of Civil and Environmental Engineering, Virginia Tech, Blacksburg, VA It is rare nowadays that a whole year goes by without a major earthquake event wreaking havoc somewhere around the world. In some cases, like the 2005 Banda Ache earthquake in Indonesia, the damage involved large geographic areas and casualties in the six figures. In general, the number and intensity of earthquakes is not increasing, however, the vulnerability of the built environment is...
13:43
Correlative Microscopy for 3D Structural Analysis of Dynamic Interactions
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Cited by 15 •
2013
We describe a correlative microscopy method that combines high-speed 3D live-cell fluorescent light microscopy and high-resolution cryo-electron tomography. We demonstrate the capability of the correlative method by imaging dynamic, small HIV-1 particles interacting with host HeLa cells.
01:56
Structural Protein Function
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2020
Structural proteins are a category of proteins responsible for functions ranging from cell shape and movement to providing support to major structures such as bones, cartilage, hair, and muscles. This group includes proteins such as collagen, actin, myosin, and keratin. Collagen, the most abundant protein in mammals, is found throughout the body. In connective tissue, such as skin, ligaments, and tendons, it provides tensile strength and elasticity. In bones and teeth, it mineralizes to form...
09:18
Time-resolved ElectroSpray Ionization Hydrogen-deuterium Exchange Mass Spectrometry for Studying Protein Structure and Dynamics
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Cited by 15 •
2017
Conformational flexibility plays a critical role in protein function. Herein, we describe the use of time-resolved electrospray ionization mass spectrometry coupled to hydrogen-deuterium exchange for probing the rapid structural changes that drive function in ordered and disordered proteins.
FAQs
Thermal fluctuations can move atoms and reshape local interactions within a protein, while solvent interactions influence which conformations are accessible. Because these motions occur over time, they help explain why a protein can support function through changing structural states rather than behaving as a permanently rigid object.
Binding of ligands, cofactors, or other biomolecules can shift the conformational population of a protein. The resulting change need not remain near the binding site: motion can propagate through the structure and influence a distant active site or allosteric region. This provides a mechanistic basis for regulation through molecular interactions.
Active sites and allosteric regions can be linked through propagated conformational motion. A change at one location may therefore alter the structural environment at another, connecting molecular recognition or binding events with functional regulation. Examining this coupling helps researchers relate observed protein movements to catalysis, signaling, and other biological outcomes.
Researchers characterize protein motions with nuclear magnetic resonance spectroscopy, time-resolved crystallography, cryo-electron microscopy, and molecular dynamics simulations. These methods form a toolkit for examining conformational changes over time, allowing studies to connect structural observations with functional questions about active sites, allosteric regions, ligand effects, and interactions with other biomolecules.
Changes in conformational behavior can be examined in relation to misfolding, rather than only to normal function. By connecting structural motion with the tendency of proteins to adopt different states, researchers can investigate how altered dynamics may relate to misfolding. This perspective broadens structural analysis from individual conformations to functional and pathological outcomes.
By linking conformational motion to catalysis, molecular recognition, signaling, and misfolding, researchers can use structural dynamics to frame questions about how proteins work or lose proper behavior. The same knowledge can support drug design aimed at stabilizing or altering specific functional states of a protein.