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Related Concept Videos

Protein Dynamics in Living Cells01:19

Protein Dynamics in Living Cells

2.2K
Different fluorescence-based techniques are used to study the protein dynamics in living cells. These techniques include FRAP, FRET, and PET.
Fluorescent recovery after photobleaching (FRAP) is a fluorescent-protein-based detection technique used to quantify protein movement rates within the cell. This method exposes a small portion of the cell to an intense laser beam. The laser beam causes permanent photobleaching of the fluorophore-tagged proteins in the exposed region. As the bleached...
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Protein Folding01:25

Protein Folding

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Proteins are chains of amino acids linked together by peptide bonds. Upon synthesis, a protein folds into a three-dimensional conformation, critical to its biological function. Interactions between its constituent amino acids guide protein folding, and hence the protein structure is primarily dependent on its amino acid sequence.
Protein Structure Is Critical to Its Biological Function
Proteins perform a wide range of biological functions such as catalyzing chemical reactions, providing...
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Mechanical Protein Functions01:58

Mechanical Protein Functions

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Proteins perform many mechanical functions in a cell. These proteins can be classified into two general categories- proteins that generate mechanical forces and proteins that are subjected to mechanical forces. Proteins providing mechanical support to the structure of the cell, such as keratin, are subjected to mechanical force, whereas proteins involved in cell movement and transport of molecules across cell membranes, such as an ion pump, are examples of generating mechanical force. 
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Intrinsically Disordered Proteins02:18

Intrinsically Disordered Proteins

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Intrinsically disordered proteins are a group of proteins that do not fold into specific three-dimensional structures. Their structural flexibility allows them to complement ordered proteins to perform functions that are inaccessible to rigid structures. They are more common in eukaryotes than prokaryotes and may either be exclusively intrinsically disordered or hybrid proteins, consisting of a mix of ordered and disordered regions. The absence of a rigid structure in these proteins can be...
17.9K
Microtubule Instability02:17

Microtubule Instability

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Microtubules are hollow cylindrical filaments having a diameter of approximately 25 nm and a length that varies from 200 nm to 25 μm. GTP-bound tubulin subunits form αβ-heterodimers for microtubule assembly. These core building blocks interact longitudinally, polymerizing into protofilaments. The protofilaments then interact with one another through lateral bonding forces to form stable cylindrical microtubules. These cylindrical filaments are dynamic as they undergo repeated...
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Protein Diffusion in the Membrane01:24

Protein Diffusion in the Membrane

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Proteins show rotational as well as lateral diffusion across the membrane. The lateral diffusion of proteins was confirmed through the cell fusion experiment where mouse and human cells were fused, resulting in hybrid cells. When the human and mouse cells fused, the specific membrane proteins on human and mouse cells were marked with the red and green-fluorescent markers, respectively. Initially, the red and green fluorescence was located on the respective hemisphere of the cell. As time...
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Study of Protein Dynamics via Neutron Spin Echo Spectroscopy
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Protein dynamics: The future is bright and complicated!

Kwangho Nam1, Magnus Wolf-Watz2

  • 1Department of Chemistry and Biochemistry, University of Texas at Arlington, Arlington, Texas 76019, USA.

Structural Dynamics (Melville, N.Y.)
|March 3, 2023
PubMed
Summary

Protein dynamics, crucial for biological functions, are explored across vast timescales. Integrating experimental and computational methods is key to understanding protein structure, dynamics, and function relationships.

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Area of Science:

  • Biophysics and structural biology focusing on protein dynamics.

Background:

  • Biological systems rely on motion, evident in proteins exhibiting dynamics from femtoseconds to milliseconds.
  • A significant challenge is quantitatively linking protein structure, dynamics, and function.

Purpose of the Study:

  • To outline future research directions in protein dynamics, with a specific focus on enzymes.
  • To address complex questions regarding allosteric signal propagation and the interplay of local and collective motions.

Main Methods:

  • Conceptual and methodological advancements are making the study of protein dynamics more accessible.
  • Integration of experimental and computational approaches is proposed as a way forward.

Main Results:

  • The field is advancing, enabling deeper exploration of the connections between protein structure, dynamics, and function.
  • Complex research questions, such as allosteric signal propagation and motion coupling, are becoming addressable.

Conclusions:

  • The integration of experiment and computation, alongside expanded sequence and structure data, is vital for future progress.
  • The field is poised to significantly comprehend the role of dynamics in biological function.