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Learn about the four levels of protein structure, including primary, secondary, tertiary, and quaternary structures, in this Khan Academy tutorial.

Now, any protein that's made up of a single polypeptide is only going to have primary structure, secondary structure and tertiary structure, but if we're dealing with something like hemoglobin, …

This article goes over the forces driving protein folding and the forces that stabilize protein structure, as well as causes of protein denaturation.

Even if you know the sequence, what is the shape of that protein, and based on that shape, how can we use that to think about how to manipulate that protein in different ways or who knows?

Proteins: Both viruses and cells have proteins. However, viruses have a protein coat (capsid) that encases their genetic material, whereas cells produce various proteins for structure, function, …

Proteins are molecules that carry out many different functions in cells. For example, some proteins provide structure for the cell. Others help carry out chemical reactions. Proteins are …

Proteins are essential molecules that perform a variety of functions in the body, including structural support, catalyzing reactions, and transporting molecules.

A single mRNA copied from one gene can code for lots of different proteins if it’s spliced in different ways. This explains how humans are able to produce about 100,000 proteins from …

The fluid mosaic model of the plasma membrane. Protein, lipid, and carbohydrate components of the membrane.