is made of a chain of . Their interaction with makes the chain curl up to give the protein its correct shape.
Protein folding illustration courtesy of Tomixdf
When placed it water it curls up into a specific shape because the sticky ones are pulled to the outside while the slippery ones slide into the inside of the protein. So a proteinís shape is decided by which amino acids it contains and in what order they are joined together.
This is another reason water is essential for life. In today we find enzymes, hair, muscle and feathers made from protein.
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