ELECTRICAL CONDUCTIVITY OF SOLID STATE PROTEINS: SIMPLE PROTEINS AND CYTOCHROME c3 AS ANHYDROUS FILM

The difference in electrical resistivity between hemoproteins and simple proteins was reported. The resistivities of mono-hemoproteins were in the range of 109–1011 Ωcm at 303 K, whereas that of ferrocytochrome c3 was extremely low, and possessed an anomalous temperature dependence. The resistivity of cytochrome c3 was as low as 57 Ωcm at 268 K. The inclination of the temperature dependence corresponded to the value of 3.7×105 J·mol−1. Above this temperature, the resistivity increased.