摘要:
The present invention has disclosed the amino acid sequence and nucleotide sequence of the .alpha.- and .beta.-subunits of two types of nitrile hydratase derived from Rhodococcus rhodochrous J-1. The DNA fragment encoding nitrile hydratase is inserted into an expression vector and the recombinant vector is used for transformation. The transformant contains multiple copies of the gene and can produce much higher level of nitrile hydratase compared with conventionally used microorganisms.
摘要:
In a process for biological production of an amide wherein a nitrile is hydrated into a corresponding amide by the action of a nitrile hydratase originated in a microorganism, the improvement which comprises the use of nitrile hydratase which is obtained by culturing a microorganism of the species Rhodococcus rhodochrous in the presence of a cobalt ion.Aromatic nitriles such as a cyanopyridine as well as aliphatic nitrile such as acrylonitrile are hydrated into the corresponding amides.
摘要:
Cells of bacteria of the species Rhodococcus rhodochrous having a high nitrile hydratase activity can be obtained in a high yield by adding to a culture medium at least one of urea and its derivatives and cobalt ion in the preparation of cells of bacteria having nitrile hydratase activity by cultivating Rhodococcus rhodochrous bacteria capable of producing nitrile hydratase.
摘要:
The present invention relates to a gene derived from Pseudomonas chlororaphis B23 strain which encodes a polypeptide having nitrile hydratase activity being capable of hydrating nitriles to amides. The invention also relates to a recombinant DNA containing the gene, and a transformant transformed with the recombinant DNA. The present invention further relates to a method of producing nitrile hydratase using the transformant and of amides using nitrile hydratase.
摘要:
The present invention relates to a gene derived from Pseudomonas chlororaphis B23 strain which encodes a polypeptide having nitrile hydratase activity being capable of hydrating nitriles to amides. The invention also relates to a recombinant DNA containing the gene, and a transformant transformed with the recombinant DNA. The present invention further relates to a method of producing nitrile hydratase using the transformant and of amides using nitrile hydratase.
摘要:
The present invention provides a method of obtaining optically active 2-phenylpropionic acid and 2-phenylpropionamide such as S-(+)-2-phenylpropionic acid, R-(-)-2-phenylpropionamide, and R-(-)-2-phenylpropionic acid from S-2-phenylpropionitrile or R,S-2-phenylpropionamide using a bacterium belonging to Rhodococcus equi.Optically active 2-phenylpropionic acid and 2-phenylpropionamide are recovered in high yield and in quantities according to the method of the invention.
摘要:
An improved biological conversion of a nitrile such as acrylonitrile or a cyanopyridine into the corresponding carboxylic acid such as acrylic acid or a nicotinic acid by the action upon the nitrile of a nitrilase enzyme, in which the improvement resides in the use as the source of the enzyme of a microorganism of Rhodococcus, such as Rh. rhodochrous J-1, FERM BP-1478, which is cultured in the presence of a lactam compound.
摘要:
The present invention has disclosed the amino acid sequence and nucleotide sequence of the .alpha.- and .beta.-subunits of two types of nitrile hydratase derived from Rhodococcus rhodochrous J-1. The DNA fragment encoding nitrile hydratase is inserted into an expression vector and the recombinant vector is used for transformation. The transformant contains multiple copies of the gene and can produce much higher level of nitrile hydratase compared with conventionally used microorganisms.
摘要:
A novel biotechnological process for the preparation of nitriles, starting from amides, is described. Micro-organisms of the genus Amycolatopsis, Actinomadura or Rhodococcus are employed for this process.
摘要:
A novel biotechnological process for the preparation of nitriles, starting from amides, is described. Microorganisms of the genus Amycolatopsis, Actinomadura or Rhodococcus are employed for this process.