👉 Pacas are a type of protein that is commonly found in human and animal tissues. They are also called "protein fibers" as they consist of two chains of different amino acids, known as polypeptide chains. Pacas are composed of three main components: glycosaminoglycans (GAGs) which provide structural support to the proteins, as well as a monosaccharide component, which is responsible for the hydrophilic nature of the protein. Pacas have