TABLE 5.

Enzyme activities in cell extracts of S. bulderi on different growth substrates^a

Enzyme	Sp act (μmol·min−1·mg of protein−1)
	Glucose	δ-Gluconolactone
Glucose-6-phosphate dehydrogenase	0.52	3.6
6-phosphogluconate dehydrogenase	0.13	1.5
Glucose dehydrogenase	<0.02	7.3
Hexokinase	9.6	5.2
Gluconate kinase	<0.02	<0.02

^aThe yeast was grown at pH 3.0 in anaerobic glucose- or δ-gluconolactone-limited chemostat cultures at a dilution rate of 0.1 h⁻¹.