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 enzymatic and non-enzymatic methods for the production of 3-methylamino-1-(thiene-2-yl)-propane-1-ol; in addition to enzymes for carrying out said method; nucleic acid sequences coding for said enzymes, expression cassettes containing them, vectors and recombinant hosts.
Abstract:
The invention concerns a method for producing optically active alcohols of formula (I) by means of enzymatic reduction of the corresponding ketones, in particular, the production of (1S)-3-methylamino-1-(2-thienyl)-propane-1-ol and (1S)-3-chlorine-1-(2-thienyl)-propane-1-ol.
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 invention relates to proteins that have an enzymatic activity for reducing substituted alkanones, such as 3-methylamino-1-(2-thienyl)-propane-1-on. The invention also relates to nucleic acids that encode these proteins, to nucleic acid constructs, vectors, genetically modified microorganisms and to methods for producing substituted (S) alkanols, such as for example (S)-3-methylamino-1-(2-thienyl)-(S)-propanol.
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 present Invention relates to new nitrilases with modified Substrate acceptance, the method to obtain them and the use of the aforesaid nitrilases. Said nitrilases are encoded by a polypeptide sequence, which at a Position corresponding to Position 296 in wild-type Alcaligenes faecalis comprises an amino acid which is not tyrosine. The Invention further relates to nucleic acid sequences and amino acid sequences encoding Said nitrilases, expression constructs comprising Said nucleic acid sequences, vectors comprising the nucleic acid sequences or the exPression constructs, to organisms, preferably microorganisms, comprising the nucleic acid sequences, expression constructs or vectors. The Invention additionally relates to a method for preparing carboxylic acids, preferably substituted chiral carboxylic acids from racemic nitriles.
Abstract:
The present invention relates to proteins which have an enzymatic activity for hydrolyzing L-pantolactone. The invention further relates to nucleic acids which code for these proteins, to nucleic acid constructs, vectors, genetically modified microorganisms and to a process for preparing D-pantolactone.
Abstract:
The present invention relates to proteins which have an enzymatic activity for hydrolyzing L-pantolactone. The invention further relates to nucleic acids which code for these proteins, to nucleic acid constructs, vectors, genetically modified microorganisms and to a process for preparing D-pantolactone.
Abstract:
Isolated nucleic acid (I), encoding a polypeptide with L-pantolactone hydrolase (LPH) activity comprising a 810 base pair sequence (1), equivalents of (1) within the degeneracy of the genetic code, is new. All sequences are fully defined in the specification. Independent claims are also included for the following: (a) derivatives of (1) that encode a polypeptide with at least 50% homology with a 269 amino acid sequence (2), without significant loss of enzymatic activity; (b) polypeptides (II) encoded by (I); (c) nucleic acid constructs containing (I) linked to one or more regulatory elements; (d) vector containing (I) or the construct of (b); (e) microorganism containing (I), the construct of (b) or the vector of (c); (f) LPH (IIa) with specified properties; and (g) production of D-pantolactone (III) by treating racemic pantolactone with (IIa) or the microorganisms of (d). All sequences are fully defined in the specification.