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

	[DsbA protein] with reduced L-cysteine residues	+			=		[DsbA protein] carrying a disulfide bond	+
	[DsbA protein] with reduced L-cysteine residues	+		ubiquinone Q8	=		[DsbA protein] carrying a disulfide bond	+		ubiquinol Q8