摘要:
The present invention relates to a microorganism having L-tryptophan productivity and a method for producing L-tryptophan using the same. More precisely, the present invention relates to the recombinant E. coli strain CJ600 (KCCM 10812P) having tryptophan productivity produced from the mutant form (KFCC 10066) of E. coli having L-phenylalanine productivity, wherein tryptophan auxotrophy is released, L-phenylalanine biosynthesis is blocked but tryptophan productivity is enhanced by reinforcing the gene involved in tryptophan biosynthesis, and a method of producing L-tryptophan using the same.
摘要:
An L-threonine-producing Escherichia coli in which a promoter of a phosphoenolpyruvate carboxylase (ppc) gene on the chromosome is substituted with a promoter of a cysteine synthase (cysK) gene and a method of producing L-threonine by using the same are disclosed. The recombinant Escherichia coli may produce L-threonine in a high yield, and thus may be widely used in medical, pharmaceutical, and feed industries, particularly for an animal feed.
摘要:
Provided is a microorganism belonging to the family Enterobacteriaceae including: a polynucleotide encoding N-trimethyllysine hydroxylase activity derived from Neurospora crassa; a polynucleotide encoding 3-hydroxy-6-N-trimethyllysine aldolase activity derived from Neurospora crassa; a polynucleotide encoding γ-trimethylaminoaldehyde dehydrogenase activity derived from Neurospora crassa; and a polynucleotide encoding γ-butyrobetaine hydroxylase activity derived from Neurospora crassa. Provided is also a process for producing L-carnitine using the microorganism.
摘要:
Disclosed is a polynucleotide encoding γ-butyrobetaine hydroxylase (γ-BBH) originating from Neurospora crassa. Also disclosed are a recombinant vector comprising the polynucleotide, a transformant transformed with the recombinant vector, γ-BBH encoded by the polynucleotide, and a method of preparing L-carnitine, which comprises hydroxylating γ-butyrobetaine using γ-BBH encoded by the polynucleotide.
摘要:
The invention relates to microorganism producing 5′-xanthylic acid. A 3,4-dehydro-DL-proline resistant Corynebacterium ammoniagenes CJXPK001 strain is provided for producing 5′-xanthylic acid. It is a mutant strain of Corynebacterium ammoniagenes KFCC 10743 having a lower resistance to 3,4-dehydro-DL-proline. The mutant strain is not affected by osmotic pressure caused by accumulated, highly concentrated solute in a culture medium, and it can produce 5′-xanthylic acid at a high yield and concentration rate.
摘要:
Provided is a microorganism that belongs to Enterobacteriacae and a method of producing L-carnitine using the same. The microorganism includes polynucleotide encoding activity of S-adenosylmethionine-6-N-iysine methyltransferase from Neurospora crassa, polynucleotide encoding activity of 6-N-trimethyllysine hydroxylase, polynucleotide encoding activity of 3-hydroxy-6-N-trimethyllysine aldolase, and polynucleotide encoding activity of γ-trimethylaminoaldehyde dehydrogenase and y-butyrobetaine hydroxylase.
摘要:
Provided is S-adenosylmethionine-6-N-lysine-methyl-transferase obtained from Neνrospora crassa, a polynucleotide encoding the same, a vector and host cell containing the polynucleotide, and a method of producing trimethyllysine by culturing the host cell.
摘要:
Provided is a microorganism belonging to the family Enterobacteriaceae including: a polynucleotide encoding N-trimethyllysine hydroxylase activity derived from Neurospora crassa; a polynucelotide encoding 3-hydroxy-6-N-trimethyllysine aldolase activity derived from Neurospora crassa; a polynucleotide encoding γ-trimethylaminoaldehyde dehydrogenase activity derived from Neurospora crassa; and a polynucleotide encoding γ-butyrobetaine hydroxylase activity derived from Neurospora crassa. Provided is also a process for producing L-carnitine using the microorganism.
摘要:
Disclosed is a polynucleotide encoding γ-butyrobetaine hydroxylate (γ-BBH) originating from Neurospora crassa. Also disclosed are a recombinant vector comprising the polynucleotide, a transformant transformed with the recombinant vector, γ-BBH encoded by the polynucleotide, and a method of preparing L-carnitine, which comprises hydroxylating γ-butyrobetaine using γ-BBH encoded by the polynucleotide.
摘要:
An L-threonine-producing Escherichia coli in which a promoter of a phosphoenolpyruvate carboxylase (ppc) gene on the chromosome is substituted with a promoter of a cysteine synthase (cysK) gene and a method of producing L-threonine by using the same are disclosed. The recombinant Escherichia coli may produce L-threonine in a high yield, and thus may be widely used in medical, pharmaceutical, and feed industries, particularly for an animal feed.