Concept
Version 14
Created by Boundless
Protein Structure
![Four levels of protein structure](../../../../../../../../../figures.boundless-cdn.com/18576/full/figure-03-04-09.jpeg)
Four levels of protein structure
The four levels of protein structure can be observed in these illustrations.
Source
Boundless vets and curates high-quality, openly licensed content from around the Internet. This particular resource used the following sources:
"OpenStax College, Proteins. October 16, 2013."
http://cnx.org/content/m44402/latest/Figure_03_04_09.jpg
OpenStax CNX
CC BY 3.0.