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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.
The...
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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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Hypoxia01:23

Hypoxia

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Hypoxia is a medical condition characterized by an inadequate oxygen supply to body tissues. It typically manifests as a bluish discoloration of the skin and mucosae, especially in fair-skinned individuals, when hemoglobin (Hb) saturation drops below 75%.
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There are four primary types of hypoxia, each resulting from a different cause:
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Export of Misfolded Proteins out of the ER01:32

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After folding, the ER assesses the quality of secretory and membrane proteins. The correctly folded proteins are cleared by the calnexin cycle for transport to their final destination, while misfolded proteins are held back in the ER lumen. The ER chaperones attempt to unfold and refold the misfolded proteins but sometimes fail to achieve the correct native conformation. Such terminally misfolded proteins are then exported to the cytosol by ER-associated degradation or ERAD pathway for...
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Related Experiment Video

Updated: Mar 7, 2026

Defining Hsp33's Redox-regulated Chaperone Activity and Mapping Conformational Changes on Hsp33 Using Hydrogen-deuterium Exchange Mass Spectrometry
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Defining Hsp33's Redox-regulated Chaperone Activity and Mapping Conformational Changes on Hsp33 Using Hydrogen-deuterium Exchange Mass Spectrometry

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Molecular chaperones and hypoxic-ischemic encephalopathy.

Cong Hua1, Wei-Na Ju2, Hang Jin2

  • 1Department of Neurosurgery, The First Hospital of Jilin University, Changchun, Jilin Province, China.

Neural Regeneration Research
|March 3, 2017
PubMed
Summary

Hypoxic-ischemic encephalopathy (HIE) causes brain injury and death. Molecular chaperones, like heat shock proteins, protect brain cells and are promising therapeutic targets for HIE treatment.

Keywords:
apoptosiscellular proteolysisexcitatory amino acidhypoxic-ischemic encephalopathyinflammationmolecular chaperonesnerve regenerationneural regenerationoxygen radicalsreviews

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Area of Science:

  • Neuroscience
  • Cell Biology
  • Biochemistry

Background:

  • Hypoxic-ischemic encephalopathy (HIE) results in brain damage and poor outcomes due to hypoxia.
  • Key injury mechanisms involve excitotoxicity, oxidative stress, inflammation, and apoptosis.
  • Cellular changes include protein misfolding, aggregation, and organelle damage.

Purpose of the Study:

  • To review the mechanisms of hypoxic-ischemic brain injury in HIE.
  • To discuss current and emerging treatment strategies for HIE.
  • To highlight the neuroprotective role of molecular chaperones and their therapeutic potential.

Main Methods:

  • Literature review of HIE mechanisms and treatments.
  • Analysis of molecular chaperone function in neuroprotection.
  • Discussion of apoptotic pathways involved in HIE.

Main Results:

  • HIE involves complex molecular and cellular pathways leading to neuronal death.
  • Effective treatments include hypothermia, xenon, melatonin, erythropoietin, and preconditioning.
  • Molecular chaperones, particularly heat shock proteins, maintain protein homeostasis and exert anti-apoptotic effects.

Conclusions:

  • Molecular chaperones are crucial for neuroprotection in HIE.
  • Heat shock proteins play a vital role in preventing apoptosis and maintaining cellular function.
  • Targeting molecular chaperones offers a promising therapeutic strategy for HIE.