摘要:
The present invention relates to enzymic and nonenzymic processes for preparing 3-methylamino-1-(thien-2-yl)propan-1-ol; as well as to enzymes for implementing these processes; and to nucleic acid sequences encoding these enzymes, to expression cassettes containing these nucleic acid sequences, to vectors and to recombinant hosts.
摘要:
A polypeptide with pyruvate decarboxylase activity, derived from the pyruvate decarboxylase from Zymomonas mobilis by substitution of an amino acid in position 553.
摘要:
The invention relates to nucleic acid sequences which code for a polypeptide having nitrilase activity, to nucleic acid constructs comprising the nucleic acid sequences, and to vectors comprising the nucleic acid sequences or the nucleic acid constructs. The invention further relates to amino acid sequences which are encoded by the nucleic acid sequences, and to microorganisms comprising the nucleic acid sequences, the nucleic acid constructs or vectors comprising the nucleic acid sequences or the nucleic acid constructs.The invention additionally relates to a process for preparing chiral carboxylic acids from the racemic nitriles.
摘要:
The invention relates to novel cytochrome P450 monooxygenases from thermophilic bacteria, in particular the genus Thermus sp., to nucleotide sequences encoding them, to the recombinant production of these monooxygenases and to their use for the microbiological oxidation of organic compounds.
摘要:
A gene construct comprising a biotin gene having the sequence SEQ ID No. 1 or SEQ ID No. 3, organisms which comprise this gene construct, the use of these sequences or of the gene construct for preparing biotin, and a process for preparing biotin are described.
摘要翻译:包含具有序列SEQ ID No.1或SEQ ID No.3的生物素基因的基因构建体,包含该基因构建体的生物体,这些序列或基因构建体用于制备生物素的用途以及制备生物素的方法是 描述。
摘要:
The present invention relates to a method for the enzymatic decarboxylation of malonic acid (propanedioic acid) derivatives catalyzed by enzymes structurally and/or functionally related to arylmalonate decarboxylase (AMDase) as isolated from microorganisms of the genus Bordetella. The present invention also relates to novel enzymes with a decarboxylase activity, useful for performing the claimed method, mutants thereof, corresponding coding sequences and expression systems, methods of preparing said novel enzymes, and screening methods for obtaining further suitable enzymes also having said decarboxylase activity.
摘要:
The invention relates to a process for preparing urethane-containing acrylic- and (meth)acrylic esters by reacting a urethane-containing alcohol with a reactant acrylic- or (meth)acrylic ester of a saturated alcohol in the presence of at least one polymerization inhibitor and an enzyme as a catalyst within a reactor, wherein the saturated alcohol released in the process and optionally an entraining agent form an azeotrope with an excess of the reactant (meth)acrylic ester, such that the azeotrope is removed by distillation under reduced pressure and at least one substream from the bottom of the reactor is circulated through the top of the distillation column. Using this process, urethane-containing acrylic- and (meth)acrylic esters are prepared in high yields and high purities under mild conditions from economically obtainable reactants with no significant polymer formation.
摘要:
Process for producing optically active 3-aminocarboxylic acid ester compounds of general Formula I, and the ammonium salts thereof, in which R1 stands for alkyl, alkoxyalkyl, alkenyl, cycloalkyl, heterocycloalkyl, aryl, or hetaryl, and R2 stands for alkyl, cycloalkyl or aryl, in which an enantiomeric mixture of a simply N-acylated 3-aminocarboxylic acid ester of general formula (I.b), in which R1 and R2 have the meanings given above and R3 stands for hydrogen, alkyl, cycloalkyl or aryl, is submitted to an enantioselective deacylation by adding a polypeptide according to claim 1.
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 invention relates to a method for the enzymatic reduction of alkyne derivatives of the formula (1), wherein R1 represents H, C1-C6-alkyl, C2-C6-alkenyl, or an optionally substituted carbocyclic or heterocyclic, aromatic or non-aromatic group, R2 represents H, C1-C6-alkyl, C2-C6-alkenyl, by reaction in the presence of special reductases.