Patents Assigned to PharmaZell GmbH
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Patent number: 11981935Abstract: In various aspects and embodiments, the invention provides a nucleic acid molecule comprising a nucleotide sequence encoding a 7?-hydroxysteroid dehydrogenase (7?-HSDH) mutant that catalyzes at least the stereospecific enzymatic reduction of a 7-ketosteroid to the corresponding 7-hydroxysteroid, wherein the mutant has, compared to the wildtype 7?-HSDH of SEQ ID NO:2, a decreased substrate inhibition and/or an altered cofactor usage, and the mutant has, in comparison with the wildtype 7?-HSDH of SEQ ID NO:2, 1 to 15 amino acid additions, substitutions, deletions and/or inversions in the sequence motif VMVGRRE corresponding to positions 36 to 42 of SEQ ID NO:2.Type: GrantFiled: January 15, 2021Date of Patent: May 14, 2024Assignee: Pharmazell GmbHInventors: Dirk Weuster-Botz, Michael Braun, Arno Aigner, Boqiao Sun, Christina Kantzow, Sven Bresch, Daniel Bakonyi, Werner Hummel
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Patent number: 11634743Abstract: The present invention relates to a coupled biotransformation process of converting chenodeoxycholic acid (CDCA) and related compounds to ursodeoxycholic acid (UDCA) and related compounds. It also relates to the cloning, expression, and biochemical characterization of a novel NADP+-dependent 7?-hydroxysteroid dehydrogenase (7?-HSDH) from Clostridium difficile, cofactor switch mutants thereof, and their application for the oxidation of bile acids. A further aspect of the invention relates to novel NADP-dependent cofactor switch mutants of the NADP+-dependent 7?-HSDH of E. coli and their application for the oxidation of bile acids.Type: GrantFiled: June 19, 2017Date of Patent: April 25, 2023Assignee: Pharmazell GmbHInventors: Daniel Bakonyi, Werner Hummel, Ralf Gross
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Patent number: 11198896Abstract: One aspect of the invention provides a nucleic acid encoding a 7?-hydroxysteroid dehydrogenase (7?-HSDH) that catalyzes at least the stereospecific enzymatic reduction of a 7-ketosteroid to the corresponding 7-hydroxysteroid. The enzyme includes a mutation at position 64 of SEQ ID NO:2 or in the corresponding sequence positions of an amino acid sequence derived therefrom with at least 90% sequence identity to SEQ ID NO:2. The mutation at position 64 is the mutation R64X1, wherein X1 represents E, D, T, L, S, P, V, K, C, A, G, Q, F, W, I or Y. The enzyme shows the following property profile in comparison with the 7?-HSDH with SEQ ID NO:2: (a) an increased specific activity (Vmax [U/mg]) for NADPH in the enzymatic reduction of dehydrocholic acid (DHCA) with NADPH as cofactor.Type: GrantFiled: July 10, 2020Date of Patent: December 14, 2021Assignee: Pharmazell GmbHInventors: Werner Hummel, Daniel Bakonyi
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Publication number: 20210139862Abstract: In various aspects and embodiments, the invention provides a nucleic acid molecule comprising a nucleotide sequence encoding a 7?-hydroxysteroid dehydrogenase (7?-HSDH) mutant that catalyzes at least the stereospecific enzymatic reduction of a 7-ketosteroid to the corresponding 7-hydroxysteroid, wherein the mutant has, compared to the wildtype 7?-HSDH of SEQ ID NO:2, a decreased substrate inhibition and/or an altered cofactor usage, and the mutant has, in comparison with the wildtype 7?-HSDH of SEQ ID NO:2, 1 to 15 amino acid additions, substitutions, deletions and/or inversions in the sequence motif VMVGRRE corresponding to positions 36 to 42 of SEQ ID NO:2.Type: ApplicationFiled: January 15, 2021Publication date: May 13, 2021Applicant: PharmaZell GmbHInventors: Dirk Weuster-Botz, Michael Braun, Arno Aigner, Boqiao Sun, Christina Kantzow, Sven Bresch, Daniel Bakonyi, Werner Hummel
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Patent number: 10954494Abstract: The invention relates to novel 7ß-hydroxysteroid dehydrogenase mutants, to the sequences which encode these enzyme mutants, to processes for the preparation of the enzyme mutants and to their use in enzymatic reactions of cholic acid compounds, in particular in the preparation of ursodeoxycholic acid (UDCS). The invention also relates to novel processes for the synthesis of UDCS using the enzyme mutants; and to the preparation of UDCS using recombinant, multiply-modified microorganisms.Type: GrantFiled: April 7, 2016Date of Patent: March 23, 2021Assignee: Pharmazell GmbHInventors: Dirk Weuster-Botz, Michael Braun, Arno Aigner, Boqiao Sun, Christina Kantzow, Sven Bresch, Daniel Bakonyi, Werner Hummel
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Publication number: 20200407767Abstract: One aspect of the invention provides a nucleic acid encoding a 7?-hydroxysteroid dehydrogenase (7?-HSDH) that catalyzes at least the stereospecific enzymatic reduction of a 7-ketosteroid to the corresponding 7-hydroxysteroid. The enzyme includes a mutation at position 64 of SEQ ID NO:2 or in the corresponding sequence positions of an amino acid sequence derived therefrom with at least 90% sequence identity to SEQ ID NO:2. The mutation at position 64 is the mutation R64X1, wherein X1 represents E, D, T, L, S, P, V, K, C, A, G, Q, F, W, I or Y. The enzyme shows the following property profile in comparison with the 7?-HSDH with SEQ ID NO:2: (a) an increased specific activity (Vmax [U/mg]) for NADPH in the enzymatic reduction of dehydrocholic acid (DHCA) with NADPH as cofactor.Type: ApplicationFiled: July 10, 2020Publication date: December 31, 2020Applicant: Pharmazell GmbHInventors: Werner Hummel, Daniel Bakonyi
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Patent number: 10724064Abstract: The invention relates to novel 7?-hydroxysteroid dehydrogenase mutants, to the sequences which code for these enzyme mutants, to processes for the preparation of the enzyme mutants and to their use in enzymatic conversions of cholic acid compounds, in particular in the preparation of ursodeoxycholic acid (UDCA); subject-matter of the invention is also novel processes for the synthesis of UDCA using enzyme mutants; and the preparation of UDCA using recombinant, multiply modified microorganisms.Type: GrantFiled: June 7, 2019Date of Patent: July 28, 2020Assignee: Pharmazell GmbHInventors: Werner Hummel, Daniel Bakonyi
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Patent number: 10544441Abstract: The invention relates to novel biocatalytic processes comprising the whole cell reduction of dehydrocholic acid (DHCA) compounds, novel 7?-hydroxy steroid dehydrogenase mutants, the sequences coding for these enzyme mutants, methods for producing the enzyme mutants and use thereof in enzymatic conversions of cholic acid compounds, and in particular in the production of ursodesoxycholic acid (UDCA); also a subject of the invention are novel methods for the synthesis of UDCA using the enzyme mutants; and in particular a further improved method for producing UDCA using recombinant whole cell biocatalysts.Type: GrantFiled: June 24, 2015Date of Patent: January 28, 2020Assignee: PharmaZell GmbHInventors: Dirk Weuster-Botz, Boqiao Sun, Christian Quirin
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3-alpha-hydroxysteroid dehydrogenase mutants and process for the preparation of ursodeoxycholic acid
Patent number: 10487348Abstract: The invention relates to novel 3-hydroxysteroid dehydrogenase mutants, to the sequences which code for these enzyme mutants, to processes for the preparation of the enzyme mutants and to their use in enzymatic conversions of cholic acid compounds, in particular in the preparation of ursodeoxycholic acid (UDCA); subject-matter of the invention is also novel processes for the synthesis of UDCA using enzyme mutants; and the preparation of UDCA using recombinant, multiply modified microorganisms.Type: GrantFiled: August 12, 2015Date of Patent: November 26, 2019Assignee: PharmaZell GmbHInventors: Werner Hummel, Daniel Bakonyi -
Patent number: 10465171Abstract: The invention relates to novel 7?-hydroxysteroid dehydrogenases which are obtainable from bacteria of the genus Collinsella, especially of the strain Collinsella aerofaciens, to the sequences encoding said enzymes, to methods for producing said enzymes and to their use in the enzymatic conversion of cholic acid compounds, and especially in the production of ursodeoxycholic acid (UDCS). The invention also relates to novel methods for the synthesis UDCS.Type: GrantFiled: March 12, 2018Date of Patent: November 5, 2019Assignee: PharmaZell GmbHInventors: Lou Liu, Rolf Schmid, Arno Aigner
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Patent number: 10358672Abstract: The invention relates to novel 7?-hydroxysteroid dehydrogenase mutants, to the sequences which code for these enzyme mutants, to processes for the preparation of the enzyme mutants and to their use in enzymatic conversions of cholic acid compounds, in particular in the preparation of ursodeoxycholic acid (UDCA); subject-matter of the invention is also novel processes for the synthesis of UDCA using enzyme mutants; and the preparation of UDCA using recombinant, multiply modified microorganisms.Type: GrantFiled: July 28, 2015Date of Patent: July 23, 2019Assignee: Pharmazell GmbHInventors: Werner Hummel, Daniel Bakonyi
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Patent number: 9096825Abstract: The invention relates to 12 ?-hydroxysteroid dehydrogenases, nucleic acid sequences coding for the same, expression cassettes and vectors, recombinant microorganisms containing the corresponding coding nucleic acid sequences, a method for producing said 12 ?-hydroxysteroid dehydrogenases, a method for enzymatic oxidation of 12 ?-hydroxysteroids using said enzyme, a method for enzymatic reduction of 12-ketosteroids using said enzyme, a method for qualitative or quantitative determination of 12-ketosteroids and/or 12?-hydroxysteroids using said 12?-hydroxysteroid dehydrogenases and a method for production of ursodesoxycholic acid, comprising the enzyme-catalyzed cholic acid oxidation using said 12 ?-hydroxysteroid dehydrogenases.Type: GrantFiled: May 27, 2011Date of Patent: August 4, 2015Assignee: Pharmazell GmbHInventors: Rolf Schmid, Michael Braun, Luo Liu, Arno Aigner, Dirk Weuster-Botz
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Publication number: 20140147887Abstract: The invention provides 12?-hydroxysteroid dehydrogenases, nucleic acid sequences coding for the same, expression cassettes and vectors, recombinant microorganisms containing the corresponding coding nucleic acid sequences, methods for producing said 12?-hydroxysteroid dehydrogenases, methods for enzymatic oxidation of 12?-hydroxysteroids using said enzyme, methods for enzymatic reduction of 12-ketosteroids using said enzyme, methods for qualitative or quantitative determination of 12-ketosteroids and/or 12?-hydroxysteroids using said 12?-hydroxysteroid dehydrogenases and methods for production of ursodesoxycholic acid, comprising the enzyme-catalysed cholic acid oxidation using said 12?-hydroxysteroid dehydrogenases.Type: ApplicationFiled: August 16, 2013Publication date: May 29, 2014Applicant: PharmaZell GmbHInventors: Arno Aigner, Ralf Gross, Rolf Schmid, Michael Braun, Steffen Mauer
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Publication number: 20140087421Abstract: The invention relates to novel 7?-hydroxysteroid dehydrogenase mutants, to the sequences which encode these enzyme mutants, to processes for the preparation of the enzyme mutants and to their use in enzymatic reactions of cholic acid compounds, in particular in the preparation of ursodeoxycholic acid (UDCS). The invention also relates to novel processes for the synthesis of UDCS using the enzyme mutants; and to the preparation of UDCS using recombinant, multiply-modified microorganisms.Type: ApplicationFiled: December 16, 2011Publication date: March 27, 2014Applicant: Pharmazell GMBHInventors: Dirk Weuster-Botz, Michael Braun, Arno Aigner, Boqiao Sun, Christina Kantzow, Sven Bresch, Daniel Bakonyi, Werner Hummel
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Publication number: 20130224792Abstract: The invention relates to novel microbial 7?-hydroxysteroid dehydrogenase (7?-HSDH) knockout mutants and to the use thereof for producing other HSDHs having various functionalities, such as 3?-, 7?- or 12?-HSDH, and to the use of thus-produced HSDH enzymes in enzymatic reactions of cholic acid compounds, and in particular for producing ursodeoxycholic acid (UDCS). The invention relates in particular to novel methods for synthesizing UDCS.Type: ApplicationFiled: May 27, 2011Publication date: August 29, 2013Applicant: PharmaZell GmbHInventors: Rolf Schmid, Michael Braun, Luo Liu, Arno Aigner, Dirk Weuster-Botz
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Publication number: 20130225539Abstract: The invention relates to a method for producing crystalline 5-aminosalicylic acid with a particularly high tap and/or bulk density.Type: ApplicationFiled: September 12, 2011Publication date: August 29, 2013Applicant: Pharmazell GMBHInventors: Stefan Gaab, Alexander Hartung, Arno Aigner
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Publication number: 20120232274Abstract: An improved process for preparing crystalline form-1 of (S)-methyl 2-(2-chlorophenyl)-2-{6,7-dihydrothieno[3,2-c]pyridine-5(4H)-yl}acetate bisulfate (clopidogrel bisulfate) of formula I is provided The preparation comprises the straight conversion of an uncyclized material of (S)-methyl 2-[2-(thiophen-2-yl)ethylamino]-2-(2-chlorophenyl) acetate hydrochloride into clopidogrel bisulfate crystalline form-1 without any degradation of clopidogrel baseType: ApplicationFiled: March 22, 2010Publication date: September 13, 2012Applicant: PHARMAZELL GMBHInventors: Wolfgang Burger, Omprakash Gudaparthi, Konda Srinivasa Reddy, Suneel K. Kumar, Venkata P. Ramana
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Publication number: 20110091921Abstract: The invention relates to 12 ?-hydroxysteroid dehydrogenases, nucleic acid sequences coding for the same, expression cassettes and vectors, recombinant microorganisms containing the corresponding coding nucleic acid sequences, a method for producing said 12 ?-hydroxysteroid dehydrogenases, a method for enzymatic oxidation of 12 ?-hydroxysteroids using said enzyme, a method for enzymatic reduction of 12-ketosteroids using said enzyme, a method for qualitative or quantitative determination of 12-ketosteroids and/or 12?-hydroxysteroids using said 12?-hydroxysteroid dehydrogenases and a method for production of ursodesoxycholic acid, comprising the enzyme-catalysed cholic acid oxidation using said 12 ?-hydroxysteroid dehydrogenases.Type: ApplicationFiled: March 25, 2009Publication date: April 21, 2011Applicant: PharmaZell GmbHInventors: Arno Aigner, Ralf Gross, Rolf Schmid, Michael Braun, Steffen Mauer