摘要:
The present invention provides a method of producing optically active amino acids from 5-substituted hydantoin by isolating a hydantoinase gene and an N-carbamyl-L-amino acid hydrolase gene involved in an ability to convert 5-substituted hydantoin or N-carbamylamino acid into optically active amino acids from a microorganism of the genus Microbacterium having the above ability and by improving gene amplification and transcriptional and translational activities thereby preparing a recombinant wherein the amount of the desired enzymes produced is increased. The hydantoinase gene is, for example, a DNA encoding for a protein having a hydantoinase activity, which has the nucleotide sequence of SEQ ID NO:1. The N-carbamyl-L-amino acid hydrolase gene is, for example, a DNA encoding for a protein having an N-carbamyl-L-amino acid hydrolase activity, which has the nucleotide sequence of SEQ ID NO:3.
摘要翻译:本发明提供了一种通过分离涉及将5-取代的乙内酰脲或N-氨基甲酰基氨基酸转化成5-取代的乙内酰脲或N-氨基甲酰基氨基酸的能力的乙内酰脲酶基因和N-氨基甲酰基-L-氨基酸水解酶基因从5-取代的乙内酰脲生产旋光性氨基酸的方法 具有上述能力的微杆菌属的微生物的旋光活性氨基酸,通过改善基因扩增和转录和翻译活性,从而制备重组体,其中产生的所需酶的量增加。 乙内酰脲酶基因是例如编码具有乙内酰脲酶活性的蛋白质的DNA,其具有SEQ ID NO:1的核苷酸序列。 N-氨基甲酰基-L-氨基酸水解酶基因是例如编码具有N-氨基甲酰基-L-氨基酸水解酶活性的蛋白质的DNA,其具有SEQ ID NO:3的核苷酸序列。
摘要:
It is an object of the present invention to provide a procedure for realizing inexpensive and simple production of 3-indole-pyruvic acid. A transformant is made using a polynucleotide having a specific nucleotide sequence encoding a protein having an oxidase activity, and oxidase is generated by culturing the transformant in a medium to accumulate the oxidase in the medium and/or the transformant. Further, tryptophan is converted into 3-indole-pyruvic acid in the presence of the transformant and/or a culture thereof to produce 3-indole-pyruvic acid.
摘要:
In a method of reducing corrosion of a material constituting a nuclear reactor structure, an electrochemical corrosion potential is controlled by injecting a solution or a suspension containing a substance generating an excitation current by an action of at least one of radiation, light, and heat existing in a nuclear reactor, or a metal or a metallic compound forming the substance generating the excitation current under the condition in the nuclear reactor to allow the substance generating the excitation current to adhere to the surface of the nuclear reactor structural material, and by injecting hydrogen in cooling water of the nuclear reactor while controlling the hydrogen concentration in a feed water.
摘要:
The present invention provides a method for efficiently producing a β-alanyl-amino acid (e.g., carnosine) or derivative thereof. Specifically, it provides a method for producing a β-alanyl-amino acid (e.g., β-alanyl-histidine) or derivative thereof, by reacting a β-alanyl ester or a β-alanyl amide and an amino acid or derivative thereof in the presence of an enzyme or an enzyme-containing product that has an ability to form the β-alanyl-amino acid (e.g., β-alanyl-histidine) or derivative thereof from the β-alanyl ester or the β-alanyl amide and the amino acid (e.g., histidine) or derivative thereof. The present invention also provides a protein which is able to catalyze production of a β-alanyl-amino acid or derivative thereof from a β-alanyl ester or a β-alanyl amide and an amino acid or derivative thereof, and a polynucleotide encoding said protein.
摘要:
A novel protein which has an activity to transport hydantoin compounds is described, as well as a recombinant expressing this transporter protein. From Microbacterium liquefaciens strain AJ3912, a novel gene was discovered to encode a protein which is able to transport hydantoin compounds. A recombinant with an excellent ability to uptake hydantoin compounds is obtained by introducing and expressing the novel gene, called mhp, using gene recombination techniques.
摘要:
A novel protein which has an activity to transport hydantoin compounds is described, as well as a recombinant expressing this transporter protein. From Microbacterium liquefaciens strain AJ3912, a novel gene was discovered to encode a protein which is able to transport hydantoin compounds. A recombinant with an excellent ability to uptake hydantoin compounds is obtained by introducing and expressing the novel gene, called mhp, using gene recombination techniques.
摘要:
The present invention provides a method of producing optically active amino acids from 5-substituted hydantoin by isolating a hydantoinase gene and an N-carbamyl-L-amino acid hydrolase gene involved in an ability to convert 5-substituted hydantoin or N-carbamylamino acid into optically active amino acids from a microorganism of the genus Microbacterium having the above ability and by improving gene amplification and transcriptional and translational activities thereby preparing a recombinant wherein the amount of the desired enzymes produced is increased. The hydantoinase gene is, for example, a DNA encoding for a protein having a hydantoinase activity, which has the nucleotide sequence set forth in SEQ ID NO:1 in the Sequence. The N-carbamyl-L-amino acid hydrolase gene is, for example, a DNA encoding for a protein having an N-carbamyl-L-amino acid hydrolase activity, which has the nucleotide sequence set forth in SEQ ID NO:3 in the Sequence.
摘要翻译:本发明提供了一种通过分离涉及将5-取代的乙内酰脲或N-氨基甲酰基氨基酸转化成5-取代的乙内酰脲或N-氨基甲酰基氨基酸的能力的乙内酰脲酶基因和N-氨基甲酰基-L-氨基酸水解酶基因从5-取代的乙内酰脲生产旋光性氨基酸的方法 具有上述能力的微杆菌属的微生物的旋光活性氨基酸,通过改善基因扩增和转录和翻译活性,从而制备重组体,其中产生的所需酶的量增加。 乙内酰脲酶基因是例如编码具有乙内酰脲酶活性的蛋白质的DNA,其具有序列中SEQ ID NO:1所示的核苷酸序列。 N-氨基甲酰基-L-氨基酸水解酶基因是例如编码具有N-氨基甲酰基-L-氨基酸水解酶活性的蛋白质的DNA,其具有SEQ ID NO:3所示的核苷酸序列 序列。
摘要:
The present invention aims at providing an excellent peptide-synthesizing protein and a method for efficiently producing a peptide. The peptide is synthesized by reacting an amine component and a carboxy component in the presence of at least one of proteins shown in the following (I) and (II). (I) The mutant protein having an amino acid sequence comprising one or more mutations from any of the mutations 1 to 68, and the mutations 239 to 290 and 324 to 377 in an amino acid sequence of SEQ ID NO:2. (II) The mutant protein having an amino acid sequence comprising one or more mutations from any of the mutations L1 to L335 and M1 to M642 in an amino acid sequence of SEQ ID NO:208
摘要翻译:本发明的目的在于提供优异的肽合成蛋白质和有效生产肽的方法。 在下列(I)和(II)所示的至少一种蛋白质存在下,使胺组分和羧基组分反应合成肽。 (I)具有包含SEQ ID NO:2的氨基酸序列中的任何突变1至68和突变239至290和324至377的一个或多个突变的氨基酸序列的突变蛋白。 (II)具有包含SEQ ID NO:208的氨基酸序列中的任何突变L1至L335和M1至M642的一个或多个突变的氨基酸序列的突变蛋白
摘要:
The present invention relates to a 5-substituted hydantoin racemase, which efficiently catalyzes racemization reactions at a high optimum temperature for racemization reactions, DNA coding for the racemase, and processes for producing optically active amino acids.
摘要:
The present invention relates to a 5-substituted hydantoin racemase, which efficiently catalyzes racemization reactions at a high optimum temperature for racemization reactions, DNA coding for the racemase, and processes for producing optically active amino acids.