Polymers of amino acids are known as polypeptides or proteins. Vibrational spectroscopy can also be used to characterize the conformation of peptides, polypeptides, and proteins. Proteolysis is the breakdown of proteins into smaller polypeptides or amino acids. Trypsin then cleaves proteins to smaller polypeptides. Pepsin breaks down proteins into polypeptides. The resulting polyamides are known as proteins or polypeptides. They are very common motifs in proteins and polypeptides. SDS is a strong detergent agent used to denature native proteins to unfolded, individual polypeptides. Complexes of two or more polypeptides (i.e. multiple subunits) are called multimers. A 3 helix is a type of secondary structure found in proteins and polypeptides. The viral envelope is made of modified Golgi membranes containing viral-specific polypeptides, including hemagglutinin. The biuret test is a chemical test for proteins and polypeptides. There are three main classes of biopolymers&colon; polysaccharides, polypeptides, and polynucleotides. Prokaryotes and plants have multi-subunit ACCs composed of several polypeptides. A frame-shifting mechanism between these two nonstructural polypeptides translates RNA-dependent RNA polymerase.