TABLE 5.

Metabolic enzymes involved in acyl-CoA metabolism, ATP formation, and oxidation-reduction of NAD(P) and methylviologen by P. gingivalis ATCC 33277

Enzyme	Substrate	Electron carrier	Sp act (U/g of protein)a
Acyl-CoA:acetate CoA-transferase	Butyryl-CoA and acetate		100 ± 7.07
	Propionyl-CoA and acetate		154 ± 17.8
	Succinyl-CoA and acetate		80.7 ± 16.2
Phosphotransacetylase	Acetyl-CoA and inorganic phosphate		4.83 ± 2.35
Acetate kinase	Acetate and ATP		9.42 ± 5.07
Methylviologen:NAD(P) oxidoreductase		NADH and MVoxb	510 ± 123
		NADPH and MVox	65.8 ± 19.3

^aMean ± standard deviation obtained from three independent experiments. 

^bMV_ox, oxidized methylviologen.