. 2013 Aug 6;6(6):675–684. doi: 10.1111/1751-7915.12075

Table 2.

Characterization of γ-PGA produced by the four E. coli recombinant strains

Strains	Yield (g l⁻¹)	D-glutamate content (%)	Molecular weight (× 10⁴Da)
E. coli-pTrcLpgs (109LP)^a	0.376 ± 0.021	2.46 ± 0.32	3.23 ± 0.26
E. coli-pTrcNpgs (109NP)^a	0.308 ± 0.025	3.28 ± 0.27	3.74 ± 0.38
E. coli-pTrcLRP (109LRP)^a	0.517 ± 0.027	8.96 ± 0.53	5.09 ± 0.33
E. coli-pTrcNRP (109NRP)^a	0.349 ± 0.016	9.33 ± 0.47	5.83 ± 0.42
E. coli-pTrcLpgs (109LP)^b	0.558 ± 0.018	3.01 ± 0.45	5.35 ± 0.28
E. coli-pTrcNpgs (109NP)^b	0.533 ± 0.022	5.94 ± 0.66	5.89 ± 0.55
E. coli-pTrcLRP (109LRP)^b	0.645 ± 0.016	18.13 ± 1.36	6.23 ± 0.46
E. coli-pTrcNRP (109NRP)^b	0.603 ± 0.033	19.59 ± 0.98	6.95 ± 0.79

Carbon source of glucose.

Substrate of L-glutamate.