Patent ID: 7105323

Claim:
A method for fabricating a precious metal-recombinant apoferritin complex, the method comprising a step of mixing the recombinant apoferritin and anionic precious metal complex ions consisiting of at least one of gold (Au) or platinum (Pt) complex ions, wherein: the amino acid residue of the recombinant apoferritin that corresponds to the 50 th residue of SEQ ID NO:2 is substituted with a basic amino acid, a nonpolar amino acid, or a neutral amino acid; the amino acid residue of the recombinant apoferritin that corresponds to the 53 rd residue of SEQ ID N022 is substituted with a basic amino acid, a nonpolar amino acid, or a neutral amino acid; the amino acid residue of the recombinant apoferritin that corresponds to the 56 th residue of SEQ ID NO:2 is substituted with a basic amino acid, a nonpolar amino acid, or a neutral amino acid; the amino acid residue of the recombinant apoferritin that corresponds to the 120 th residue of SEQ ID NO:2 is substituted with serine (Ser), alanine (Ala), or glycine (Gly); the amino acid residue of the recombinant apoferritin that corresponds to the 123 rd residue of SEQ ID NO:2 is substituted with serine (Ser), alanine (Ala), or glycine (Gly); the recombinant apoferritin comprises a residue that corresponds to the 46 th residue of SEQ ID NO:2; and the resulting complex comprises recombinant apoferritin holding a precious metal complex therein, and the precious metal complex consisting of at least one of gold (Au) or platinum (Pt).