TABLE 1.

Distribution of activities of isoamylase, β-lactamase, and malate dehydrogenase in transformants^a

Introduced vector	Fraction	Isoamylase (%)	β-Lactamase (%)	Malate dehydrogenase (%)
pIF13	Ex	56	50	3
	Pe	42	50	5
	In	1	0	92
pIF12	Ex	52	56	4
	Pe	46	42	6
	In	2	1	90
pUC19	Ex	0	6	0
	Pe	0	90	6
	In	0	4	94
pMF13	Ex	6	ND	ND
	Pe	93	ND	ND
	In	1	ND	ND

^aThe values are the averages of three experiments. Ex, extracellular; Pe, periplasmic; In, intracellular; ND, not determined.