TABLE 2.

Specific growth rates of E. coli W3110 and its pta mutant (JP231) on various carbon sources^a

Carbon source	Specific growth rate (h−1) of:
	W3110	JP231
TB	1.30 ± 0.05	0.59 ± 0.02
Glucose	0.59 ± 0.05	0.49 ± 0.03
Fructose	0.44 ± 0.02	0.33 ± 0.05
Pyruvate	0.38 ± 0.03	0.17 ± 0.02
Glycerol	0.41 ± 0.01	0.42 ± 0.01
Succinate	0.31 ± 0.03	0.30 ± 0.04

^aThe culture medium contained M9 salts with 2 g of each carbon source liter⁻¹. Results are the means of three independent experiments.