👉 The term "polypeptide" is often used in biotechnology and molecular biology to describe a long chain of amino acids that serves as the primary structural unit for proteins. Polypeptides are composed of two chains, one with a single amino acid (peptide) and another with a double amino acid (protein). They are typically found in a wide variety of biological processes such as signal transduction pathways, enzyme catalysis, and cell signaling. Polypeptide chains can be further divided into
