TABLE 4.

Comparison of L-threonine production in engineered E. coli strains.

Strains	Carbon source	Time (h)	L-threonine (g/L)	Productivity (g/L/h)	Yield (g/g)	Fermentation mode	References
E. coli βIM4 (pBR322-thrAr)	Glucose	72	13.4	0.186	0.45	Batch	Miwa et al., 1983
E. coli TWF006/pFW01-thrA*BC-asd	Glucose	36	15.9	0.44	0.53	Batch	Zhao et al., 2018
E. coli TH28C (pBRThrABCR3)	Glucose	50	82.4	1.648	0.46	Fed-batch	Lee et al., 2007
E. coli MT201	Glucose	28	102	3.643	0.38	Fed-batch	Lee et al., 2018
E. coli THPE5	Glucose	40	70.8	1.77	0.404	Fed-batch	Liu et al., 2019
E. coli W1688	Glucose	36	10.5	0.292	0.367	Batch	This study
E. coli W1688-fimH*	Glucose	28	17.5	0.63	0.59	Repeated batch	This study