KDO aldolase
    1.
    发明授权
    KDO aldolase 失效
    KDO醛缩酶

    公开(公告)号:US5585261A

    公开(公告)日:1996-12-17

    申请号:US328739

    申请日:1994-10-25

    摘要: Aureobacterium barkerei strain KDO-37-2 (ATCC 49977) and KDO aldolase (EC 4.1.2.23) isolated therefrom are disclosed. The KDO aldolase is further disclosed to have a broad substrate specificity with respect to its reverse reaction, i.e. the condensation of aldoses with pyruvate to form a wide range of 2-keto-3-deoxy-onic acids, including 2-keto-3-deoxy-nonulosonic acid, 2-keto-3-deoxy-octulosonic acid, 2-keto-3-deoxy-heptulosonic acid, and 2-keto-3-deoxy-hexulosonic acid. In particular, 3-deoxy-D-manno-2-octulosonic acid (D-KDO), a vital component of lipopolysaccharides found in the bacterial outer membrane may be synthesized from D-arabinose and pyruvate in 67% yield.

    摘要翻译: 公开了从其分离的巴氏杆菌菌株KDO-37-2(ATCC 49977)和KDO醛缩酶(EC 4.1.2.23)。 进一步公开KDO醛缩酶相对于其逆反应具有广泛的底物特异性,即醛糖与丙酮酸的缩合形成宽范围的2-酮-3-脱氧ic酸,包括2-酮-3- 脱氧 - 非酮酸,2-酮-3-脱氧 - 八环酮酸,2-酮-3-脱氧 - 庚酮酸和2-酮-3-脱氧 - 己酸。 特别地,在D-细菌外膜中发现的脂多糖的重要组分3-脱氧-D-壬烯-2-辛酮酸(D-KDO)可由D-阿拉伯糖和丙酮酸合成,产率67%。

    KDO aldolase and condensation reactions employed therewith
    2.
    发明授权
    KDO aldolase and condensation reactions employed therewith 失效
    KDO醛缩酶和与其一起使用的缩合反应

    公开(公告)号:US06423834B1

    公开(公告)日:2002-07-23

    申请号:US09247164

    申请日:1999-02-09

    IPC分类号: C07H1500

    摘要: Aureobacterium barkerei strain KDO-37-2 (ATCC 49977) and KDO aldolase (EC 4.1.2.23) isolated therefrom are disclosed. The KDO aldolase is further disclosed to have a broad substrate specificity with respect to its reverse reaction, i.e. the condensation of aldoses with pyruvate to form a wide range of 2-keto-3-deoxy-onic acids, including 2-keto-3-deoxy-nonulosonic acid, 2-keto-3-deoxy-octulosonic acid, 2-keto-3-deoxy-heptulosonic acid, and 2-keto-3-deoxy-hexulosonic acid. In particular, 3-deoxy-D-manno-2-octulosonic acid (D-KDO), a vital component of lipopolysaccharides found in the bacterial outer membrane may be synthesized from D-arabinose and pyruvate in 67% yield. Additionally, protected forms of the KDO aldolase products, e.g. hexaacetyl 2-keto-3-deoxy-nonulosonic acid and pentaacetyl 2-keto-3-deoxy-octulosonic acid, may be decarboxylated to form the corresponding 2-deoxy-aldoses, e.g. 2-deoxy-octulose and 2-deoxy-heptulose respectively.

    摘要翻译: 公开了从其分离的巴氏杆菌菌株KDO-37-2(ATCC 49977)和KDO醛缩酶(EC 4.1.2.23)。 进一步公开KDO醛缩酶相对于其逆反应具有广泛的底物特异性,即醛糖与丙酮酸的缩合形成宽范围的2-酮-3-脱氧ic酸,包括2-酮-3- 脱氧 - 非酮酸,2-酮-3-脱氧 - 八环酮酸,2-酮-3-脱氧 - 庚酮酸和2-酮-3-脱氧 - 己酸。 特别地,在D-细菌外膜中发现的脂多糖的重要组分3-脱氧-D-壬烯-2-辛酮酸(D-KDO)可由D-阿拉伯糖和丙酮酸合成,产率67%。 另外,保护形式的KDO醛缩酶产物,例如, 六乙酰基2-酮-3-脱氧 - 非酮酸和五乙酰基2-酮-3-脱氧 - 八环酸可以脱羧以形成相应的2-脱氧醛糖,例如, 2-脱氧 - 八酮糖和2-脱氧 - 七氟醚。

    Biologically pure culture of aureobacterium barkeri KDO-37-2
    3.
    发明授权
    Biologically pure culture of aureobacterium barkeri KDO-37-2 失效
    生物纯培养的巴氏杆菌KDO-37-2

    公开(公告)号:US5869316A

    公开(公告)日:1999-02-09

    申请号:US767182

    申请日:1996-12-16

    摘要: Aureobacterium barkeri strain KDO-37-2 (ATCC 49977) and KDO aldolase (EC 4.1.2.23) isolated therefrom are disclosed. The KDO aldolase is further disclosed to have a broad substrate specificity with respect to its reverse reaction, i.e. the condensation of aldoses with pyruvate to form a wide range of 2-keto-3-deoxy-onic acids, including 2-keto-3-deoxy-nonulosonic acid, 2-keto-3-deoxy-octulosonic acid, 2-keto-3-deoxy-heptulosonic acid, and 2-keto-3-deoxy-hexulosonic acid. In particular, 3-deoxy-D-manno-2-octulosonic acid (D-KDO), a vital component of lipopolysaccharides found in the bacterial outer membrane may be synthesized from D-arabinose and pyruvate in 67% yield. Additionally, protected forms of the KDO aldolase products, e.g. hexaacetyl 2-keto-3-deoxy-nonulosonic acid and pentaacetyl 2-keto-3-deoxy-octulosonic acid, may be decarboxylated to form the corresponding 2-deoxy-aldoses, e.g. 2-deoxy-octulose and 2-deoxy-heptulose respectively.

    摘要翻译: 公开了分离自巴斯德氏菌杆菌菌株KDO-37-2(ATCC 49977)和KDO醛缩酶(EC 4.1.2.23)。 进一步公开KDO醛缩酶相对于其逆反应具有广泛的底物特异性,即醛糖与丙酮酸的缩合形成宽范围的2-酮-3-脱氧ic酸,包括2-酮-3- 脱氧 - 非酮酸,2-酮-3-脱氧 - 八环酮酸,2-酮-3-脱氧 - 庚酮酸和2-酮-3-脱氧 - 己酸。 特别地,在D-细菌外膜中发现的脂多糖的重要组分3-脱氧-D-壬烯-2-辛酮酸(D-KDO)可由D-阿拉伯糖和丙酮酸合成,产率67%。 另外,保护形式的KDO醛缩酶产物,例如, 六乙酰基2-酮-3-脱氧 - 非酮酸和五乙酰基2-酮-3-脱氧 - 八环酸可以脱羧以形成相应的2-脱氧醛糖,例如, 2-脱氧 - 八酮糖和2-脱氧 - 七氟醚。

    KDO Aldolase and condensation reactions employed therewith
    4.
    发明授权
    KDO Aldolase and condensation reactions employed therewith 失效
    KDO醛缩酶和与其一起使用的缩合反应

    公开(公告)号:US5358859A

    公开(公告)日:1994-10-25

    申请号:US993140

    申请日:1992-12-18

    摘要: Aureobacterium barkerei strain KDO-37-2 (ATCC 49977) KDO aldolase (EC 4.1.2.23) isolated therefrom are disclosed. The DKDO aldolase is further disclosed to have a broad substrate specificity with respect to its reverse reaction, i.e. the condensation of aldoses with pyruvate to form a wide range of 2-keto-3-deoxy-onic acids, including 2-keto-3-deoxy-nonulosonic acid, 2-keto-3-deoxy-octulosonic acid, 2-keto-3-deoxy-heptulosonic acid, and 2-keto-3-deoxy-hexulosonic acid. In particular, 3-deoxy-D-manno-2-octulosonic acid (D-KDO), a vital component of lipopolysaccharides found in the bacterial outer membrane may be synthesized from D-arabinose and pyruvate in 67% yield. Additionally, protected forms of the KDO aldolase products, e.g. hexaacetyl 2-keto-3-deoxy-nonulosonic acid and pentaacetyl 2-keto-3-deoxy-octulosonic acid, may be decarboxylated to form the corresponding 2-deoxy-aldoses, e.g. 2-deoxy-octulose and 2-deoxy-heptulose respectively.

    摘要翻译: 公开了从其分离的巴氏杆菌菌株KDO-37-2(ATCC 49977)KDO醛缩酶(EC 4.1.2.23)。 进一步公开了DKDO醛缩酶对于其逆反应具有广泛的底物特异性,即醛糖与丙酮酸的缩合形成宽范围的2-酮-3-脱氧酸,包括2-酮-3- 脱氧 - 非酮酸,2-酮-3-脱氧 - 八环酮酸,2-酮-3-脱氧 - 庚酮酸和2-酮-3-脱氧 - 己酸。 特别地,在D-细菌外膜中发现的脂多糖的重要组分3-脱氧-D-壬烯-2-辛酮酸(D-KDO)可由D-阿拉伯糖和丙酮酸合成,产率67%。 另外,保护形式的KDO醛缩酶产物,例如, 六乙酰基2-酮-3-脱氧 - 非酮酸和五乙酰基2-酮-3-脱氧 - 八环酸可以脱羧以形成相应的2-脱氧醛糖,例如, 2-脱氧 - 八酮糖和2-脱氧 - 七氟醚。