A method for selectively arranging ferritin in a specified inorganic
material part formed on a substrate is provided. The method for arranging
ferritin of the present invention is characterized in that ferritin is
selectively arranged on a part including titanium or silicon nitride
(SiN) in an efficient manner by adding a nonionic surface active agent.
Also, selective arrangement capability of ferritin can be markedly
improved by modifying the N-terminus of ferritin with a certain peptide.