CHE 161 - Proteins
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6 Terms
Describe the structure of proteins.
Proteins are composed of polypeptides, built from 20 types of amino acids.
What is a peptide bond and where is it located?
A peptide bond connects amino acids. It is the bond from the last C group of one amino to the N of the other amino.
What is the primary structure of a protein?
The primary structure of a protein is the sequence of amino acids.
Describe the secondary structure of a protein.
The secondary structure of a protein refers to the coils and folds within a single polypeptide chain. This can be in helix form or in beta pleated sheets. This occurs due to hydrogen bonding.
Describe the tertiary structure of a protein.
The tertiary structure of a protein refers to the 3D structure of a single polypeptide chain. The alpha helices and beta sheets will fold into a particular shape, depending on hydrophobic interactions.
What are the four bonds that influence a protein’s tertiary structure?
Ionic bonds
Disulfide bonds
Hydrogen bonds
Hydrophobic interactions
