Patent ID: 7592167

Claim:
A method for preparing a functional peptide fiber bonded to a functional material via a pair of connecting substances, comprising: providing a plurality of peptide structure units having an α-helix or a β-sheet structure, each peptide structure unit comprising a peptide chain, wherein the α-helix structure has a hydrophobic group at an N-terminal or C-terminal of the peptide chain; connecting a first connecting substance to the peptide chain; forming a β-sheet of fibrous form by mixing the peptide structure units in an aqueous solution; and bonding a second connecting substance to the first connecting substance, the second connecting substance being connected to a functional material and having a biochemical specificity for the first connecting substance; wherein: the first connecting substance is one of a biotin group and an avidin group, one of an antibody and an antigen, one of an enzyme and a substrate, an inhibitor or a coenzyme, or one of a metal and a ligand of the metal; the second connecting substance is the other of the biotin group and the avidin group, the other of the antibody and the antigen, the other of the enzyme and the substrate, the inhibitor or the coenzyme, or the other of the metal and the ligand of the metal; and the functional material is selected from the group consisting of proteins, carbohydrates, lipids, coenzyme, pigments comprising fluorescence groups, liquid crystalline molecules and metallic ligands.