Meanwhile, proteins are long molecules made up of multiple peptide subunits, and are also known as polypeptides. Peptides are generally considered to be short chains of two or more amino acids. There are seven types of proteins: antibodies, contractile proteins, enzymes, hormonal proteins, structural proteins, storage proteins, and transport proteins. Red blood cells contain a protein compound that carries oxygen throughout the body. Your body uses it to build and repair tissue. ![]() Protein is an important building block of bones, muscles, cartilage and skin. What are three uses of proteins in the body? What is the opposite of protein? inorganic molecule The polypeptide will then fold into a specific conformation depending on the interactions (dashed lines) between its amino acid side chains. When connected together by a series of peptide bonds, amino acids form a polypeptide, another word for protein. Proteins are present in all living organisms and include many essential biological compounds such as enzymes, hormones, and antibodies. ![]() A protein is a naturally occurring, extremely complex substance that consists of amino acid residues joined by peptide bonds.
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