Scleroproteins or fibrillar proteins are long, filamentous protein and one of the two main classes of the tertiary structure of the protein ( this globular proteins ). They are exclusively in animals, in the construction of connective tissue, tendons, bone and muscle fibers. Scleroproteins examples include keratin, collagen and elastin.The scleroproteins usually have a cylindrical, and mostly structural protein or catalytic activity storage functions. They are typically insoluble in water and have a tendency to form aggregates because they have hydrophobic groups on its surface.Its primary structures ( 41 amino acid sequence; they are less diversified in terms of type of amino acid that is found, there are often repetitions of sections of the sequence along the polypeptide chain. As a result of secondary structure are features such as a triple helices in collagen formation. There are normally several links between the different polypeptide chains, such as between keratin chains disulfide bonds.The scleroproteins are more resistant to denaturation of globular proteins.
