Amino acid | Definition, Structure, & Facts | Britannica
Solved 7. Amino Acid Sequence and Protein Structure Our | Chegg.com
Proteins | Microbiology
Introduction to proteins and amino acids (article) | Khan Academy
Life Science - Protein structure is the three-dimensional arrangement of atoms in an amino acid-chain molecule. Proteins are polymers – specifically polypeptides – formed from sequences of amino acids, the monomers of