3-羟基戊酰胺 在
amidase from Dietzia sp. ADL1 (ATCC PTA-1854) cells 作用下,
以
phosphate buffer 为溶剂,
生成 3-hydroxyvaleric acid ammonium salt
参考文献:
名称:
3-羟基链烷腈生物催化水解为3-羟基链烷酸
摘要:
具有腈水合酶和酰胺酶活性的组合的微生物催化剂具有比微生物腈水解酶催化剂更高的水解3-羟基链烯腈的比活性。Comamonas testosteroni 22–1,Dietzia sp.。ADL1和Comamonas睾丸激素5-MGAM-4D腈水合酶/酰胺酶生物催化剂各自将3-羟基戊腈水解为3-羟基戊酸(以铵盐的形式),产率为99-100%,但是在催化剂循环的连续分批反应中,固定有藻酸盐的C睾丸激素5-MGAM-4D具有出色的酶稳定性和体积生产率。在一系列连续的85次间歇反应中,使用生物催化剂进行循环以生产1.0 M 3-羟基戊酸,最终反应中回收的腈水合酶和酰胺酶活性分别为初始活性的29%和40%。该系列反应的催化剂生产率为670 g 3-羟基戊酸/ g干细胞重量(50 g 3-羟基戊酸/ g生物催化剂珠),该系列中初始反应的体积生产率为44 g 3-HVA /升/小时 用藻酸盐固定的睾丸梭菌
Nucleic acid fragments encoding nitrile hydratase and amidase enzymes from comamonas testosteroni 5-MGAM-4D and recombinant organisms expressing those enzymes useful for the production of amides and acids
申请人:——
公开号:US20040225116A1
公开(公告)日:2004-11-11
The invention relates to the isolation, sequencing, and recombinant expression of genes encoding either a nitrile hydratase (NHase) or amidase (Am) from
Comamonas testosteroni
5-MGAM-4D, where the NHase is useful for catalyzing the hydration of certain nitriles to the corresponding amides, and the amidase is useful for hydrolysis of certain amides to the corresponding carboxylic acids. Also provided are transformed host cells containing polynucleotides for expressing the nitrile hydratase or amidase enzymes from
Comamonas testosteroni
5-MGAM-4D.
Nucleic acid fragments encoding nitrile hydratase and amidase enzymes from Comamonas testosteroni 5-MGAM-4D and recombinant organisms expressing those enzymes useful for the production of amides and acids
申请人:Payne S. Mark
公开号:US20070105197A1
公开(公告)日:2007-05-10
The invention relates to the isolation, sequencing, and recombinant expression of genes encoding either a nitrile hydratase (NHase) or amidase (Am) from
Comamonas testosteroni
5-MGAM-4D, where the NHase is useful for catalyzing the hydration of nitrites to the corresponding amides, and the amidase is useful for hydrolysis of amides to the corresponding carboxylic acids. Also provided are transformed host cells containing polynucleotides for expressing the nitrile hydratase or amidase enzymes from
Comamonas testosteroni
5-MGAM-4D.
Nucleic acid fragments encoding nitrile hydratase and amidase enzymes from Comamonas testosteroni 5-MGAM-4D and recombinant organisms expressing those enzymes useful for the production of amides and acids
申请人:E. I. du Pont de Nemours and Company
公开号:US07153663B2
公开(公告)日:2006-12-26
The invention relates to the isolation, sequencing, and recombinant expression of genes encoding either a nitrile hydratase (NHase) or amidase (Am) from Comamonas testosteroni 5-MGAM-4D, where the NHase is useful for catalyzing the hydration of nitriles to the corresponding amides, and the amidase is useful for hydrolysis of amides to the corresponding carboxylic acids. Also provided are transformed host cells containing polynucleotides for expressing the nitrile hydratase or amidase enzymes from Comamonas testosteroni 5-MGAM-4D.
Stirring mixtures of β-hydroxynitriles with manganese dioxide, deposited onto silica gel for a few days at room temperature resulted in the formation of the corresponding amides in fair to good yields. The unprecedented conversion of 3-hydroxyglutarodinitrile into the corresponding monoamide has been performed by this methodology.
Biocatalytic Hydrolysis of 3-Hydroxyalkanenitriles to 3-Hydroxyalkanoic Acids
作者:Eugenia C. Hann、Amy E. Sigmund、Susan K. Fager、Frederick B. Cooling、John E. Gavagan、Arie Ben-Bassat、Sarita Chauhan、Mark S. Payne、Susan M. Hennessey、Robert DiCosimo
DOI:10.1002/adsc.200303007
日期:2003.6
Microbial catalysts having a combination of nitrile hydratase and amidase activities had a significantly-higher specific activity for hydrolysis of 3-hydroxyalkanenitriles than microbial nitrilasecatalysts. Comamonas testosteroni 22–1, Dietzia sp. ADL1 and Comamonas testosteroni 5-MGAM-4D nitrile hydratase/amidase biocatalysts each hydrolyzed 3-hydroxyvaleronitrile to 3-hydroxyvaleric acid (as the
具有腈水合酶和酰胺酶活性的组合的微生物催化剂具有比微生物腈水解酶催化剂更高的水解3-羟基链烯腈的比活性。Comamonas testosteroni 22–1,Dietzia sp.。ADL1和Comamonas睾丸激素5-MGAM-4D腈水合酶/酰胺酶生物催化剂各自将3-羟基戊腈水解为3-羟基戊酸(以铵盐的形式),产率为99-100%,但是在催化剂循环的连续分批反应中,固定有藻酸盐的C睾丸激素5-MGAM-4D具有出色的酶稳定性和体积生产率。在一系列连续的85次间歇反应中,使用生物催化剂进行循环以生产1.0 M 3-羟基戊酸,最终反应中回收的腈水合酶和酰胺酶活性分别为初始活性的29%和40%。该系列反应的催化剂生产率为670 g 3-羟基戊酸/ g干细胞重量(50 g 3-羟基戊酸/ g生物催化剂珠),该系列中初始反应的体积生产率为44 g 3-HVA /升/小时 用藻酸盐固定的睾丸梭菌