Protein Structure and Folding

After a polypeptide is produced in protein synthesis, it’s not necessarily a functional protein yet! Explore protein folding that occurs within levels of protein structure with the Amoeba Sisters! Primary, secondary, tertiary, and quaternary protein structure levels are briefly discussed. Video also mentions chaperonins (chaperone proteins) and how proteins can be denatured.

Table of Contents:
0:41 Reminder of Protein Roles
1:06 Modifications of Proteins
1:25 Importance of Shape for Proteins
1:56 Levels of Protein Structure
2:06 Primary Structure
3:10 Secondary Structure
3:45 Tertiary Structure
4:58 Quaternary Structure [not in all proteins]
6:01 Proteins often have help in folding [introduces chaperonins]
6:40 Denaturing Proteins

*Further Reading Suggestions*

Related to Protein Misfoldings:

Learn About “The Protein Folding Problem”:

Factual References:

OpenStax, Biology. OpenStax CNX. Jun 1, 2018

Reece, J. B., & Campbell, N. A. (2011). Campbell biology. Boston: Benjamin Cummings / Pearson.

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The Amoeba Sisters videos demystify science with humor and relevance. The videos center on Pinky’s certification and experience in teaching biology at the high school level. For more information about The Amoeba Sisters, visit:

We cover the basics in biology concepts at the secondary level. If you are looking to discover more about biology and go into depth beyond these basics, our recommended reference is the FREE, peer reviewed, open source OpenStax biology textbook:

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