H. Sasabe et al., CYTOCHROME B(562) - ELECTROACTIVE PROTEIN FOR BIOELECTRONICS, Molecular crystals and liquid crystals science and technology. Section A, Molecular crystals and liquid crystals, 255, 1994, pp. 271-278
To develop bioelectronic devices and/or the structural analyses of pro
teins, two-dimensional crystallization of proteins is required. Heme p
roteins are particularly interesting due to electron transfer characte
ristics associated with the porphyrin-based prosthetic group. Cytochro
me b(562) has been chosen as a model protein for the fabrication of tw
o-dimensional crystals. Three approaches in making two-dimensional cry
stals of cytochrome b(562) are presented here: (1) the formation of mo
nomolecular layer of cytochrome b(562) reconstituted with alkylated he
me, (2) the control of surface charge density of cytochrome b(562) and
(3) the enhancement of thermal stability both by means of protein eng
ineering.