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Protein Organization01:24

Protein Organization

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Proteins are polymers of amino acid residues. They are versatile and responsible for different cellular functions, including DNA replication, molecular transport, catalysis, and structural support. Proteins have a hierarchical structure comprising at least three levels of organization: primary, secondary, and tertiary structure. Some large proteins have a quaternary structure where individual protein subunits are linked together.
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Protein and Protein Structure02:15

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Proteins are one of the most abundant organic molecules in living systems and have the most diverse range of functions of all macromolecules. Proteins may be structural, regulatory, contractile, or protective. They may serve in transport, storage, or membranes; or they may be toxins or enzymes. Their structures, like their functions, vary greatly. They are all, however, amino acid polymers arranged in a linear sequence.
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Conservation of Protein Domains Over Different Proteins02:26

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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.
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A proteome is the entire set of proteins that a cell type produces. We can study proteomes using the knowledge of genomes because genes code for mRNAs, and the mRNAs encode proteins. Although mRNA analysis is a step in the right direction, not all mRNAs are translated into proteins.
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A Protocol for Computer-Based Protein Structure and Function Prediction
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Computational Methods for Protein Tertiary Structure Analysis.

Antigoni Avramouli1

  • 1Department of Informatics, Ionian University, Corfu, Greece. c15avra@ionio.gr.

Advances in Experimental Medicine and Biology
|July 24, 2023
PubMed
Summary

Maintaining protein folding accuracy is crucial but challenging due to cellular errors. Predicting protein structures aids in understanding mutation effects and developing targeted therapies for precision medicine.

Keywords:
Misfolding diseasesPharmacotherapyPrecision medicineProtein misfoldingTertiary structure

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Area of Science:

  • Biochemistry
  • Molecular Biology
  • Computational Biology

Background:

  • Cellular systems struggle to maintain protein folding accuracy, leading to misfolded proteins.
  • Genetic variations and environmental stress exacerbate protein misfolding issues.
  • Misfolded proteins are implicated in various cellular dysfunctions and diseases.

Purpose of the Study:

  • To explore the utility of protein structure prediction in analyzing mutation effects.
  • To investigate the potential of computational approaches for understanding macromolecular complexes.
  • To identify opportunities for developing targeted peptide-based pharmacotherapies.

Main Methods:

  • Tertiary protein structure analysis and prediction using computational systems.
  • In silico modeling to study the impact of mutations on protein structure.
  • Analysis of macromolecular complexes through computational simulations.

Main Results:

  • Protein structure prediction offers a viable method for studying mutation effects.
  • Computational systems facilitate the analysis of complex molecular interactions.
  • The study highlights the potential of in silico methods in drug discovery.

Conclusions:

  • Protein structure prediction is a valuable tool for understanding protein misfolding and mutation impacts.
  • Advancements in computational power enhance the study of molecular mechanisms.
  • This approach paves the way for precision medicine and novel peptide-based treatments.