Poly-γ-glutamic Acid Biosynthesis by a Novel γ-glutamyltranspeptidase from Bacillus cereus
نویسندگان
چکیده
منابع مشابه
Microbial production of poly-γ-glutamic acid.
Poly-γ-glutamic acid (γ-PGA) is a natural, biodegradable and water-soluble biopolymer of glutamic acid. This review is focused on nonrecombinant microbial production of γ-PGA via fermentation processes. In view of its commercial importance, the emphasis is on L-glutamic acid independent producers (i.e. microorganisms that do not require feeding with the relatively expensive amino acid L-glutami...
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Many studies have clarified that poly(γ-glutamic acid) (PGA) increases the solubility of Ca 2+ , suggesting that PGA enhances calcium absorption in the small intestine. However, there has been no report on the specific interaction between PGA and Ca 2+ in water. We studied the aqueous solution properties of PGA calcium salt (PGA-Ca complex). The chelating ability and binding strength of PGA for...
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Poly-γ-glutamic acid (γ-PGA) is a promising microbial polymer with potential applications in industry, agriculture and medicine. The use of high γ-PGA-producing strains is an effective approach to improve productivity of γ-PGA. In this study, we developed a mutant, F3-178, from Bacillus subtilis GXA-28 using genome shuffling. The morphological characteristics of F3-178 and GXA-28 were not ident...
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Poly-γ-glutamic acid (γ-PGA), one type of amino acid polymers, consists of D-and L-glutamic acids linked with amide bonding between α-amino and γ-carboxylic acids. Naturally, γ-PGA could be biodegradable polymer and water-solubleapplied in various industries such as food, cosmetics, and pharmaceutical industries. Variation of initial L-glutamic acid concentration affecting on the production of ...
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ژورنال
عنوان ژورنال: Biotechnology(Faisalabad)
سال: 2013
ISSN: 1682-296X
DOI: 10.3923/biotech.2013.209.212