What are proteins?
Q: What are proteins?
A: Proteins are long-chain molecules built from small units known as amino acids.
Q: How are amino acids joined?
A: Amino acids are joined with peptide bonds.
Q: What is a polypeptide?
A: A polypeptide is a single linear polymer chain of amino acids.
Q: Where does the sequence of amino acids in a polypeptide come from?
A: The sequence of amino acids in a polypeptide comes from the DNA sequence of a gene.
Q: What happens shortly after synthesis to some amino acids?
A: Shortly after synthesis, some amino acids are chemically modified.
Q: What does the modification of amino acids in proteins do?
A: The modification of amino acids in proteins alters the folding, stability, activity, and function of the protein.
Q: Are all proteins made up of only amino acids?
A: No, sometimes proteins have non-peptide groups attached, as cofactors.
