Genetically modified microorganisms capable of producing beta-glucans and methods for producing beta-glucans

    公开(公告)号:AU2013285476A1

    公开(公告)日:2015-01-22

    申请号:AU2013285476

    申请日:2013-07-03

    Abstract: The present invention relates to genetically modified microorganisms capable of producing beta-glucans, characterized in that said genetically modified microorganism overexpresses (i) a polynucleotide encoding a polypeptide having 1,3-&bgr;-D-glucan synthase-activity, and/or (ii) a polypeptide having 1,3-&bgr;-glucan synthase-activity, compared to a corresponding non-modified control microorganism of the same strain. The present invention also relates to the use of a polynucleotide encoding a polypeptide having 1,3-&bgr;-D-glucan synthase-activity or the use of such a polypeptide for producing &bgr;-glucans. Furthermore, the present invention relates to methods for producing &bgr;-glucans comprising the introduction of a promoter upstream of a polynucleotide encoding a polypeptide having 1,3-&bgr;-D-glucan synthase-activity thereby increasing the expression of said polynucleotide, or a polynucleotide encoding a polypeptide having 1,3-&bgr;-D-glucan synthase-activity into a microorganism being able to synthesize &bgr;-glucans.

    GENE CLUSTER FOR BIOSYNTHESIS OF CYCLOCLAVINE

    公开(公告)号:ZA201307315B

    公开(公告)日:2014-12-23

    申请号:ZA201307315

    申请日:2013-10-01

    Applicant: BASF SE

    Abstract: The invention in principle pertains to the field of recombinant manufacture of alkaloids and, in particular, cycloclavine. It provides polynucleotides for the gene cluster of enzymes involved in the biosynthesis of cycloclavin as well as vectors and host cells comprising such polynucleotides. Also provided are polypeptides encoded by the said polynucleotides which can be applied in a method for the manufacture of cycloclavine also encompassed by the present invention.

    GENE CLUSTER FOR BIOSYNTHESIS OF CYCLOCLAVINE

    公开(公告)号:CA2825979A1

    公开(公告)日:2012-09-07

    申请号:CA2825979

    申请日:2012-02-24

    Applicant: BASF SE

    Abstract: The invention in principle pertains to the field of recombinant manufacture of alkaloids and, in particular, cycloclavine. It provides polynucleotides for the gene cluster of enzymes involved in the biosynthesis of cycloclavin as well as vectors and host cells comprising such polynucleotides. Also provided are polypeptides encoded by the said polynucleotides which can be applied in a method for the manufacture of cycloclavine also encompassed by the present invention.

    METODO PARA LA PRODUCCION DE ALCOHOLES OPTICAMENTE ACTIVOS A PARTIR DE ALCANONAS MEDIANTE EL EMPLEO DE UNA DESHIDROGENASA DE AZOARCUS.

    公开(公告)号:ES2328264T3

    公开(公告)日:2009-11-11

    申请号:ES05745555

    申请日:2005-05-04

    Applicant: BASF SE

    Abstract: Método para la producción de alcanoles ópticamente activos de la fórmula I ** ver fórmula** donde n representa un valor numérico entero de 0 a 5; Cyc representa un anillo carbocíclico o heterocíclico, dado el caso sustituido, mono o polinuclear, saturado o insaturado, y R 1 representa halógeno, SH, OH, NO2, NR 2 R 3 o NR 2 R 3 R 4+ X - , donde R 2 , R 3 y R 4 independientemente uno de otro representan H o un radical alquilo pequeño o alcoxi pequeño con 1 a 6 átomos de carbono y X - representa un ión contrario, donde en un medio que contiene una alcanona de la fórmula II, ** ver fórmula** donde n, Cyc y R 1 en los significados arriba indicados, se incuba una enzima (E), con una secuencia de polipéptidos (i) SEQ ID NO: 2 o (ii) en la que hasta 25% de los radicales aminoácido, respecto a SEQ ID NO:2, ha sido cambiado mediante borrado, inserción, sustitución, o una combinación de ellos, y la cual aun posee una actividad enzimática de por lo menos 50% de la de SEQ ID NO:2 en presencia de equivalentes de reducción, donde el compuesto de la fórmula II es reducido por vía enzimática hasta el compuesto de la fórmula I, y los equivalentes de reducción consumidos en el curso de la reacción son generados nuevamente por transformación de un alcohol de sacrificio hasta la correspondiente cetona de sacrificio con la ayuda de la enzima (E) y la cetona de sacrificio es eliminada al menos parcialmente del medio de reacción, y se aísla el producto formado (I).

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