共 34 条
Production of succinate and polyhydroxyalkanoate from substrate mixture by metabolically engineered Escherichia coli
被引:35
作者:
Kang, Zhen
[2
]
Du, Lili
[2
]
Kang, Junhua
[2
]
Wang, Yang
[2
]
Wang, Qian
[1
,2
]
Liang, Quanfeng
[2
]
Qi, Qingsheng
[1
,2
]
机构:
[1] Shandong Univ, Sch Life Sci, Natl Glycoengn Res Ctr, Jinan 250100, Peoples R China
[2] Shandong Univ, Sch Life Sci, State Key Lab Microbial Technol, Jinan 250100, Peoples R China
基金:
中国国家自然科学基金;
关键词:
Succinate;
PHA;
Escherichia coli;
Metabolic engineering;
Biorefinery;
PSEUDOMONAS-AERUGINOSA;
ANAEROBIC FERMENTATION;
REGULATED EXPRESSION;
ENZYME-ACTIVITY;
ACID PRODUCTION;
BIOFUELS;
GLYCEROL;
BIOREFINERY;
STRAINS;
FEEDSTOCKS;
D O I:
10.1016/j.biortech.2011.03.070
中图分类号:
S2 [农业工程];
学科分类号:
0828 ;
摘要:
The strategic design of this study aimed at producing succinate and polyhydroxyalkanoate (PHA) from substrate mixture of glycerol/glucose and fatty acid in Escherichia coli. To accomplish this, an E. coli KNSP1 strain derived from E. coli LR1110 was constructed by deletions of ptsG, sdhA and pta genes and overexpression of phaC1 from Pseudomonas aeruginosa. Cultivation of E. coli KNSP1 showed that this strain was able to produce 21.07 g/L succinate and 0.54 g/L PHA (5.62 wt.% of cell dry weight) from glycerol and fatty acid mixture. The generated PHA composed of 58.7 mol% 3-hydroxyoctanoate (3HO) and 41.3 mol% 3-hydroxydecanoate (3HD). This strain would be useful for complete utilization of byproducts glycerol and fatty acid of biodiesel production process. (C) 2011 Elsevier Ltd. All rights reserved.
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页码:6600 / 6604
页数:5
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