TABLE 1.

Purification table^a

Purification step	Vol (ml)	Protein (mg/ml)	Ribulose 5-P reductase sp act (μmol/min/mg)	CDP-ribitol PPase sp act (μmol/min/mg)	Recovery (%)
					Reductase	PPase
Crude extract	48	6.25	1.88	0.22	100.0	100.0
DEAE-Sepharose	14	4.57	5.60	1.42	63.5	137.7
Blue-Sepharose	4	2.48	37.50	15.70	65.8	235.5

^aElution of DEAE- and Blue-Sepharose columns was performed as described in Materials and Methods and the legend to Fig. 5. PPase, pyrophosphorylase; 5-P, 5-phosphate.