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Related Concept Videos

Conservation of Protein Domains Over Different Proteins02:26

Conservation of Protein Domains Over Different Proteins

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Protein domains are small structurally independent units that are part of a single amino acid chain.  Although these domains are often structurally independent, they may rely on synergistic effects to perform their functions as part of a larger protein. Protein domains may be conserved within the same organism, as well as across different organisms.
A limited set of protein domains often duplicate and recombine during evolution. These domains can be organized in different combinations to...
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Protein Dynamics in Living Cells01:19

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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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Conservation of Protein Domains02:26

Conservation of Protein Domains

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Mechanisms of Membrane Domain Formation00:59

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Different physical properties of lipids and proteins allow them to localize and form distinct islands or domains in the membrane. Some membrane domains are formed due to protein-protein interactions, whereas others are formed due to the presence of specific lipids such as sphingolipids and sterols—for example, large proteins, such as bacteriorhodopsin, aggregate and create distinct domains.
Another mechanism for membrane domain formation involves membrane proteins interacting with...
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Protein Diffusion in the Membrane01:24

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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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Membrane Domains01:18

Membrane Domains

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The membrane domains concentrate specific lipids and proteins at one place within the membrane, which helps in cell signaling, adhesion, and other critical cellular processes. These domains can differ in size, composition, function, and lifespan.
Protein Domains
The membrane comprises a group of distinct proteins responsible for carrying out a cell's specific function. For example, the plasma membrane of the human sperm, or a single germ cell, contains a unique set of proteins in the...
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Updated: Dec 17, 2025

Structure-Based Simulation and Sampling of Transcription Factor Protein Movements along DNA from Atomic-Scale Stepping to Coarse-Grained Diffusion
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Using Cellular Automata to Simulate Domain Evolution in Proteins.

Xuan Xiao1, Guang-Fu Xue1, Biljana Stamatovic2

  • 1Computer Department, Jing-De-Zhen Ceramic Institute, Jingdezhen, China.

Frontiers in Genetics
|June 26, 2020
PubMed
Summary
This summary is machine-generated.

We developed a new simulation method for multi-domain protein evolution, including domain fusions, insertions, and deletions. Our approach achieves high success rates and offers a user-friendly web server for predicting protein domain architecture evolution trends.

Keywords:
cellular automatonmulti-domain proteinsprotein domain architectureprotein evolutionsimulation

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Area of Science:

  • Evolutionary biology
  • Bioinformatics
  • Computational biology

Background:

  • Proteins are crucial for biological processes like catalysis and immune functions.
  • Understanding protein evolution is fundamental to evolutionary biology.
  • General models aid sequence analysis and simulation but often lack multi-domain complexity.

Purpose of the Study:

  • To develop a novel method for simulating multi-domain protein evolution.
  • To incorporate domain fusions, insertions, and deletions into evolutionary models.
  • To provide a tool for predicting protein domain architecture evolution.

Main Methods:

  • Development of a new simulation method for multi-domain protein evolution.
  • Incorporation of domain fusion, insertion, and deletion events.
  • Validation through simulation tests and assessment of predictor success rates.

Main Results:

  • The developed simulation method demonstrates remarkably high success rates in prediction.
  • A user-friendly web server (http://jci-bioinfo.cn/domainevo) has been established.
  • Simulation results enable prediction of protein domain architecture evolution trends.

Conclusions:

  • The new simulation method accurately models multi-domain protein evolution.
  • The web server provides an accessible tool for experimental scientists.
  • This work advances the prediction of evolutionary trajectories in protein domain architectures.