... probably involved in the transfer ofelectrons from the two specific binding sites and the twospecific pathways suggested [13] for transport of electrons from the two quinol types to [Fe-S] clusters, ... purchased from Aldrich. Juglone (5-hydroxy-1,4-naphthoquinone), plumb-agin (5-hydroxy 2-methyl-1,4-naphthoquinone), coen-zyme Q0(2,3-dimethyl 5-methyl-p-benzoquinone) andbenzyl viologen were from ... reductase from Escherichia coli K12. Biochemistry 24,40–46.13. Giordani, R., Buc, J., Cornish-Bowden, A. & Cardenas, M.L.(1997) Kinetics of membrane-bound nitrate reductase A from Escherichia...