Abstract:
The present invention relates to a method for producing 5-norbornen-2-carboxylic acid from 5-norbornen-2-endo-carbonitrile and/or 5-norbornen-2-exo-carbonitrile. The invention relates more specifically to a method for producing 5-norbornen-2-carboxylic acid at a high substrate concentration. Furthermore, the invention relates to a polypeptide suitable for the enzymatic reaction of 5-norbornen-2-carbonitrile to 5-norbornen-2-carboxylic acid, particularly also at a high substrate concentration, as well as to a nucleic acid coding for the polypeptide, a composition containing 5-norbornen-2-carbonitrile to 5-norbornen-2-endo-carboxylic acid and 5-norbornen-2-exo-carboxylic acid, as well as the use of the polypeptide.
Abstract:
The invention relates to a method for reesterifying or esterifying side chains in polymers. Said method comprises the following steps: a) a copolymer is produced which is obtained by polymerizing aa) at least one (meth)acrylate of general formula (I) as component A, wherein R 1 represents H or CH 3 while R 2 represents H or an alkyl radical that can be optionally substituted with functional groups such as acryl groups, ether groups, amino groups, epoxy groups, halogen groups, or sulfonic acid groups, and ab) at least one monomer of general formula (II) as component B, wherein R 3 has the same meaning as R 1 , R 4 has the same meaning as R 2 , and n = 1 to 40, and b) reesterifying or esterifying the carboxyl group containing the radical R 4 with an alcohol in the presence of an enzyme catalyzing the reesterification or esterification process. The invention also relates to said polymers and the use thereof.
Abstract:
A process for the production of an optically enriched tertiary alcohol of the formula (2a) or (2b), by reacting an epoxide of the formula (1) with a nucleophilic agent Nu in the presence of halohydrin dehalogenase.
Abstract:
The invention relates to novel proteins, in particular, exhibiting a protease activity and promoting the production of extracellular lipases by bacteria, in particular, by Burkholderia-type bacteria, to coding nucleic acid sequences, expression constructs containing them, host modified thereby, to a method for producing proteins exhibiting a protease activity and to a lipase production method, in particular by Burkholderia-type bacteria.
Abstract:
The invention relates to a method for producing the optically active alkanols of formula (I), wherein n is an integer of from 0 to 5; Cyc represents an optionally substituted, mononuclear or polynuclear, saturated or unsaturated, carbocylic or heterocyclic ring, and R
Abstract:
The present invention relates to new aminoacid sequences isolated from Adenia racemosa encoding S-hydroxynitrile lyases and their use in methods for the production of nitriles and/or carboxylic acids, preferably optically active nitriles and/or carboxylic acids. The invention further relates to nucleic acid encoding said S-hydroxynitrile lyases, recombinant expression constructs comprising said nucleic acid sequences, recombinant vectors comprising the nucleic acid sequences or the expression constructs, to recombinant organisms, preferably microorganisms or yeasts, comprising the nucleic acid sequences, expression constructs or vectors. The invention additionally relates to a method for the production of cyanohydrins and/or carboxylic acids, preferably optically active cyanohydrins and/or carboxylic acids from racemic aldehydes and cyanide.
Abstract:
The invention relates to a novel electron donor system for enzymes with redox properties and to its use in enzyme-catalyzed oxidation reactions, such as the production of omega hydroxylated fatty acids. The invention further relates to an improved analysis method for fatty acid monoxygenases and to bioreactors and test kits wherein the inventive electron donor system is advantageously used.
Abstract:
The invention relates to modified cytochrome P450 monooxygenases comprising a modified substrate profile, to nucleic acid sequences that code therefor, to expression constructs and vectors, and to recombinant microorganisms which contain these vectors. The invention also relates to methods for microbiologically producing terminally or subterminally hydroxylated aliphatic carboxylic acids.