Reaction catalyzed by protein dithiol:quinone oxidoreductase DsbB (1.8.5.9)

	a [DsbA protein] with reduced L-cysteine residues	+			=		a [DsbA protein] carrying a disulfide bond	+
	a [DsbA protein] with reduced L-cysteine residues	+		a quinone	=		a [DsbA protein] carrying a disulfide bond	+		a quinol