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Related Concept Videos

Molecular Chaperones and Protein Folding03:00

Molecular Chaperones and Protein Folding

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The native conformation of a protein is formed by interactions between the side chains of its constituent amino acids. When the amino acids cannot form these interactions, the protein cannot fold by itself and needs chaperones. Notably, chaperones do not relay any additional information required for the folding of polypeptides; the native conformation of a protein is determined solely by its amino acid sequence. Chaperones catalyze protein folding without being a part of the folded protein.
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Molecular Chaperones and Protein Folding03:00

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Bacterial Protein Maturation01:26

Bacterial Protein Maturation

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Bacterial protein maturation is a tightly regulated process that ensures newly synthesized polypeptides achieve correct functional conformations. This maturation involves a series of modifications, folding events, and quality control steps, often assisted by specialized chaperone proteins.N-Terminal ModificationsThe maturation of bacterial polypeptides begins cotranslationally as the polypeptide exits the ribosome. The first amino acid, N-formylmethionine (fMet), is typically modified at the...
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The Proteasome01:13

The Proteasome

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Eukaryotic cells can degrade proteins through several pathways. One of the most important among these is the ubiquitin-proteasome pathway. It helps the cell eliminate the misfolded, damaged, or unwarranted cytoplasmic proteins in a highly specific manner.
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The Proteasome02:18

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Eukaryotic cells can degrade proteins through several pathways. One of the most important amongst these is the ubiquitin-proteasome pathway. It helps the cell eliminate the misfolded, damaged, or unwarranted cytoplasmic proteins in a highly specific manner.
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The Unfolded Protein Response01:37

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The ER is the hub of protein synthesis in a cell. It has robust systems to quality control protein folding and also for degradation of terminally misfolded proteins. Under normal conditions, a small proportion of misfolded proteins that cannot be salvaged need to be transported to the cytoplasm by the ER-associated degradation or ERAD pathways. However, if the ERAD cannot handle the misfolded proteins, the cell activates the unfolded protein response or UPR to adjust the protein folding...
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Related Experiment Video

Updated: May 1, 2026

Using Caenorhabditis elegans to Screen for Tissue-Specific Chaperone Interactions
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Using pharmacological chaperones to restore proteostasis.

Ya-Juan Wang1, Xiao-Jing Di2, Ting-Wei Mu2

  • 1Center for Proteomics and Bioinformatics and Department of Epidemiology and Biostatistics, Case Western Reserve University School of Medicine, Cleveland, OH 44106, USA.

Pharmacological Research
|April 22, 2014
PubMed
Summary

Pharmacological chaperones are small molecules that help proteins fold correctly and travel within cells. They show promise for treating protein misfolding diseases by improving protein function.

Keywords:
ChaperoneE4031 (PubChem CID: 3185)ERADGABA (PubChem CID: 119)GPCRIon channelLysosomal storage diseaseNN-DNJ (PubChem CID: 501640)Naltrexone (PubChem CID: 5360515)Nicotine (PubChem CID: 89594)Pharmacological chaperoneProtein misfolding diseaseProteostasisSR121463 (PubChem CID: 9810773)

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Area of Science:

  • Biochemistry
  • Molecular Biology
  • Pharmacology

Background:

  • Proteostasis, the balance of protein synthesis, folding, trafficking, and degradation, is crucial for normal cellular function.
  • Defective proteostasis contributes to various protein misfolding diseases.
  • Protein misfolding and aggregation disrupt cellular processes and lead to disease.

Purpose of the Study:

  • To explore the therapeutic potential of pharmacological chaperones in treating protein misfolding diseases.
  • To highlight the role of pharmacological chaperones in enhancing protein folding and trafficking.
  • To focus on the application of pharmacological chaperones for lysosomal enzymes, G protein-coupled receptors (GPCRs), and ion channels.

Main Methods:

  • Pharmacological chaperones are cell-permeant small molecules designed to bind directly to target proteins.
  • These molecules stabilize the native conformation of proteins, promoting proper folding.
  • The study focuses on the mechanism by which chaperones facilitate protein trafficking.

Main Results:

  • Pharmacological chaperones increase the population of natively folded proteins.
  • This enhanced population can effectively engage cellular machinery for transport.
  • The study specifically examines chaperones' effects on lysosomal enzymes, GPCRs, and ion channels.

Conclusions:

  • Pharmacological chaperones represent a promising therapeutic strategy for protein misfolding diseases.
  • By stabilizing proteins and aiding their trafficking, these molecules can ameliorate disease phenotypes.
  • Targeting lysosomal enzymes, GPCRs, and ion channels with pharmacological chaperones offers a viable therapeutic avenue.