Chaperone proteins such as Hsp70 help nascent polypeptides reach their native fold and prevent aggregation.
Folding is guided by a funnel-shaped energy landscape, but crowded cells risk aggregation. Chaperones such as Hsp70 bind exposed hydrophobic regions and chaperonins such as GroEL give an enclosed space for folding. Heat shock increases chaperone production.
Misfolding underlies diseases like cystic fibrosis (ΔF508 CFTR) and Alzheimer's.
Chaperone proteins such as Hsp70 help nascent polypeptides reach their native fold and prevent aggregation.
Protein Folding and Chaperones is one of the 51 topics in Biomolecules & Biochemistry. It is rated Advanced, so it suits learners who want specialist depth. Related topics in this area include Prions, Lipid Rafts, Protein Post-Translational Modification.
Anfinsen's ribonuclease experiment showed that a denatured protein can refold spontaneously.
Work through the Beginner topics in Biomolecules & Biochemistry first, such as Water Properties, Carbon Chemistry, Carbohydrates, then return to Protein Folding and Chaperones. Advanced topics assume the Intermediate vocabulary.
The closest topics to Protein Folding and Chaperones are Prions, Lipid Rafts, Protein Post-Translational Modification, Activation Energy. Comparing them side by side is a good way to see how the ideas connect.
Read the summary and the in-depth section, then use the quick check on the interactive lesson for Protein Folding and Chaperones. To practise the whole of Biomolecules & Biochemistry, use the Biomolecules & Biochemistry quiz.
Protein Folding and Chaperones: Chaperone proteins such as Hsp70 help nascent polypeptides reach their native fold and prevent aggregation. Prions: Misfolded infectious proteins that convert normal proteins into the abnormal form, causing diseases like scrapie. Read both side by side and note what each one explains.
First, read the summary and write the definition in your own words. Second, read the in-depth section and note any example. Third, compare it with Prions and explain the difference aloud. Finally, take the Biomolecules & Biochemistry quiz and come back to this page for any question you miss.
Misfolded infectious proteins that convert normal proteins into the abnormal form, causing diseases like scrapie.
⚗️ Biomolecules & BiochemistryCholesterol and sphingolipid-rich membrane microdomains that cluster signalling proteins.
⚗️ Biomolecules & BiochemistryChemical changes such as phosphorylation, glycosylation and ubiquitination that regulate protein activity and fate.
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⚗️ Biomolecules & Biochemistry