Before revision: Proteins thumbnail| 160px| The general structure of an α-amino acid, with the amino group on the left and the carboxyl group on the right Proteins are very large molecules—macro-biopolymers—made from monomers called amino acids.
After revision: Proteins thumbnail| The general structure of an α-amino acid, with the amino group on the left and the carboxyl group on the right Proteins are very large molecules—macro-biopolymers—made from monomers called amino acids.