Optimization of extracellular 5-aminolevulinic acid production from Escherichia coli transformed with ALA synthase gene of Bradyrhizobium japonicum
1999
Choi, C. | Hong, B.S. | Sung, H.C. | Lee, H.S. | Kim, J.H.
Extracellular accumulation of 5-aminolevulinic acid (ALA) by an E. coli overexpressing ALA synthase (ALAS) was achieved by inserting a hemA gene from Bradyrhizobium japonicum and expressed under the control of T7 promoter. At pH 7.0 extracellular ALA reached up to 15 mM in a jar fermenter with an addition of glycine (30 mM) and succinate (90 mM) in the medium. ALA accumulation was increased to 20 mM by adding levulinic acid (30 mM) to the cultures.
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书目信息
其它主题
Photodynamic herbicides; Aminolevulinic acid; Gene overexpression; Hema gene
语言
英语
类型
Journal Article; Text
2024-02-28
MODS