摘要:
The present invention relates to a process for the production of a polyamine involving the use of enzymes; in particular to a process performed in aqueous environment; to the polyamines produced by said method; as well as the use of said polyamines for manufacturing paper, for immobilizing enzymes, or for preparing pharmaceutical or cosmetical compositions. The invention also relates to a novel method for in situ regeneration of cofactors NAD(P)+.
摘要:
The present invention relates to novel mutants with cyclase activity and use thereof in a method for biocatalytic cyclization of terpenes, such as in particular for the production of isopulegol by cyclization of citronellal; a method for the preparation of menthol and methods for the biocatalytic conversion of further compounds with structural motifs similar to terpene.
摘要:
The present invention relates to a biocatalytic method of preparing a mono-acylated polyol catalyzed by triacylglycerol lipase mutants, as for example derived from Candida antarctica lipase B (CALB); a biocatalytic method of enantioselectively preparing an asymmetric mono-acylated polyol, catalyzed by the same enzyme mutants; as well as the use of a mutated triacylglycerol lipase in a method of preparing mono-acylated polyols. The invention also provides novel mutants, coding sequences thereof, and recombinant microorganisms carrying said coding sequences.
摘要:
The invention relates to a method for the enzyme-catalysed hydrolysis of polyacrylic acid esters. According to said method, at least one polyacrylic acid ester is provided and incubated with at least one enzyme selected from enzymes (EC 3.1) acting on ester bindings, until the ester groups contained in the polyacrylic acid ester are partially or fully hydrolytically split, and optionally the modified polymer obtained thereby is isolated. The invention also relates to the enzymes used and mutants thereof, nucleic acids coding for the enzymes, vectors comprising the nucleic acids, micro-organisms comprising the vectors, and the use of the enzymes, the vectors or the micro-organisms for carrying out a method for the enzyme-catalysed hydrolysis of polyacrylic acid esters. The present application also relates to polymer reaction products that can be obtained by the method, and methods for producing esterases.
摘要:
The present invention relates to a multi-stage process for producing substituted, optically active alcohols, comprising an enzyme-catalyzed synthesis step, in particular a synthesis step which is catalyzed by an alcohol dehydrogenase. The inventive method is particularly suitable for producing phenylephrine, i.e. 3-[(1R)-1-hydroxy-2-methylamino-ethyl]-phenol.
摘要:
A method for enzymatic preparation of compounds of the general formula (2) from unsaturated alkene derivatives of the general formula (1) by reducing a compound of the formula (1) in the presence of a reductase, comprising at least one of the polypeptide sequences SEQ ID NO: 1, 2 or 3 or having a functionally equivalent polypeptide sequence which is at least 80% identical to SEQ ID NO: 1, 2 or 3.
摘要翻译:一种通过在还原酶的存在下还原式(1)的化合物,从通式(1)的不饱和烯烃衍生物中酶制备通式(2)的化合物的方法,所述方法包括至少一种多肽序列 具有与SEQ ID NO:1,2或3至少80%相同的功能等同多肽序列的SEQ ID NO:1,2或3。
摘要:
The invention relates to a method for the enzyme-catalysed hydrolysis of polyacrylic acid esters. According to said method, at least one polyacrylic acid ester is provided and incubated with at least one enzyme selected from enzymes (EC 3.1) acting on ester bindings, until the ester groups contained in the polyacrylic acid ester are partially or fully hydrolytically split, and optionally the modified polymer obtained thereby is isolated. The invention also relates to the enzymes used and mutants thereof, nucleic acids coding for the enzymes, vectors comprising the nucleic acids, micro-organisms comprising the vectors, and the use of the enzymes, the vectors or the micro-organisms for carrying out a method for the enzyme-catalysed hydrolysis of polyacrylic acid esters. The present application also relates to polymer reaction products that can be obtained by the method, and methods for producing esterases.
摘要:
The present invention relates to modified cytochrome P450 monooxygenases with an altered substrate profile, to nucleic acid sequences coding therefor, to expression constructs and vectors, to recombinant microorganisms which comprise these vectors, and to processes for the microbiological production of terminally or subterminally hydroxylated aliphatic carboxylic acids.
摘要:
A process for the racemisation of an optically active alpha-hydroxyketone by incubating said alpha-hydroxyketone in the presence of an acetoin racemase of Lactobacillus.