Table 6. Conditions used to measure HPR activities.

Protein Sample	Enzyme Activity
	NADH-HP	NADPH-HP	NADH-glyoxylate	NADPH-glyoxylate
Recombinant HPR1	30–2,000 μm HP	0.5–20 mm HP	0.625–40 mm glycolate	5–150 mm glycolate
	200 μm NADH	750 μm NADPH	200 μm NADH	1 mm NADH
Recombinant HPR1	6.25–400 μm NADH	12.5–500 μm NADPH	25–800 μm NADH	25–500 μm NADPH
	500 μm HP	15 mm HP	50 mm glyoxylate	30 mm glyoxylate
Leaf extract	400 μm NADH	400 μm NADPH	400 μm NADH	400 μm NADPH
	1.5 mm HP	7.5 mm HP	50 mm glyoxylate	50 mm glyoxylate
	30 μg protein	30 μg protein	60 μg protein	100 μg protein