摘要:
There is provided a process for industrial production of simple 3-carboxy-cis,cis-muconic acid and/or 3-carboxymuconolactone from low molecular mixtures derived from plant components such as vanillin, vanillic acid and protocatechuic acid, via a multistage enzyme reaction.A recombinant plasmid containing a vanillate demethylase gene (vanAB genes), benzaldehyde dehydrogenase gene (ligV gene) and protocatechuate 3,4-dioxygenase gene (pcaHG genes); transformants incorporating the plasmid; and a process for production of 3-carboxy-cis,cis-muconic acid and/or 3-carboxymuconolactone characterized by culturing the transformants in the presence of vanillin, vanillic acid, protocatechuic acid or a mixture of two or more thereof.
摘要:
There is provided a process for industrial production of simple 3-carboxy-cis,cis-muconic acid and/or 3-carboxymuconolactone from low molecular mixtures derived from plant components such as vanillin, vanillic acid and protocatechuic acid, via a multistage enzyme reaction. A recombinant plasmid containing a vanillate demethylase gene (vanAB genes), benzaldehyde dehydrogenase gene (ligV gene) and protocatechuate 3,4-dioxygenase gene (pcaHG genes); transformants incorporating the plasmid; and a process for production of 3-carboxy-cis,cis-muconic acid and/or 3-carboxymuconolactone characterized by culturing the transformants in the presence of vanillin, vanillic acid, protocatechuic acid or a mixture of two or more thereof.
摘要:
Industrial-scale fermentative production of 3-carboxy-cis,cis-muconic acid from terephthalic acid. Also, a protocatechuate 4,5-ring-cleaving enzyme gene-disrupted strain in which the gene coding for (a) the amino acid sequence set forth in SEQ ID NO: 1 or 3, or (b) the amino acid sequence set forth in SEQ ID NO: 1 or 3 which has a deletion, substitution, addition and/or insertion of one or more amino acids and exhibits protocatechuate 4,5-ring cleavage activity, present in the chromosomal DNA of microbial cells, has been disrupted; recombinant plasmids comprising the Tph gene and protocatechuate 3,4-dioxygenase gene; transformants obtained by introducing the recombinant plasmids into the disrupted strain; and a process for production of 3-carboxy-cis,cis-muconic acid and/or 3-carboxymuconolactone characterized by culturing the transformants in the presence of terephthalic acid.
摘要翻译:从对苯二甲酸工业规模发酵生产3-羧基 - 顺式,顺式 - 粘康酸。 此外,原儿茶素4,5环切割酶基因破坏的菌株,其中编码(a)SEQ ID NO:1或3所示的氨基酸序列的基因,或(b)阐述的氨基酸序列 在具有一个或多个氨基酸的缺失,取代,添加和/或插入并且表现出存在于微生物细胞的染色体DNA中的原儿茶素4,5-环切割活性的SEQ ID NO:1或3已被破坏; 包含Tph基因和原儿茶素3,4-双加氧酶基因的重组质粒; 通过将重组质粒导入破碎的菌株获得的转化体; 以及3-羧基 - 顺式,顺式 - 粘酸和/或3-羧基粘土内酯的制备方法,其特征在于在对苯二甲酸存在下培养转化体。
摘要:
The invention provides biodegradable polyesters, polyurethanes, comprising 3-carboxymuconolactone as a structural unit, 3-carboxymuconolactone esters and a process for their production.Polyesters comprising a repeating unit represented by the following formula (I): [wherein R represents a hydrocarbon-based divalent residue which, in the structure, optionally contains a heteroatom without an active hydrogen], polyurethanes comprising the polyester structure; 3-carboxymuconolactone esters; and a process for their production.