Cj Cheiljedang Corporation

Cheiljedang Corp.

Cj Cheildjedang Corporation

Cj Cheijedang Corporation

Soo An Shin

Hyang Choi

Young Wook Cho

In Hye Kang

Min Tae Park

Su Jin Choi

Sung Hoo Jhon

Kyoung Min Lee

Hye Won Um

Si Yong Yang

Han Won Lee

Kwang Ho Lee

Ji Sun Lee

Jin Sook Chang

Byeong Cheol Song

Young Bin Hwang

Chul Ha Kim

Min Sun Kang

Jae Yeong Ju

Jae Hyun Jo

Yong Uk Shin

Hye Won Kim

Sol Kim

Eun Mi Shin

Soon Won Hong

Hyun Ae Bae

Eun Sung Koh

Won Sik Gwak

Eun Bin Yang

Eun Ji Koh

The present invention relates to a putrescine-producing microorganism and a method for producing putrescine using the same. To be more specific, the present invention is directed to a microorganism given the ability to produce putrescine which is generated by blocking a biosynthetic pathway from ornithine to arginine, increasing the intracellular level of glutamate, enhancing the biosynthetic pathway of ornithine from glutamate, and introducing extracellular ornithine decarboxylase; and a method for producing putrescine by using the microorganism.

Microorganisms for producing putrescine and method for producing putrescine using same

The present invention provides methods for the production of cysteine or derivates thereof by culturing a microorganism having reduced activity of endogenous phosphoserine phosphatase and the activity of PhnC, PhnD, and PhnE is reduced, and enhanced activity of phosphoglycerate dehydrogenase and/or phosphoserine aminotransferase. The O-phosphoserine produced by such an organism can then be reacted with a sulfide in the presence of a sulfydrylase or a microorganism expressing a sulfhydrylase to produce cysteine or a derivative thereof. Microorganisms having these reduced and enhanced properties noted above are also provided herein.

Microorganism producing o-phosphoserine and method of producing L-cysteine or derivatives thereof from O-phosphoserine using the same

The present invention relates to a microorganism having an improved ornithine-producing ability, in which the biosynthetic pathway of arginine form ornithine is blocked, the intracellular glutamate level is increased, and the biosynthetic pathway of ornithine from glutamate is enhanced, and a method for producing ornithine using the microorganism.

Microorganisms having improved ornithine-producing ability and method for producing ornithine using the same

The present invention relates to avirulentvariants by inactivating virulence gene clusters of(SG), a main pathogen of avian salmonellosis, and various uses thereof notably in the production of-specific lytic bacteriophages, pharmaceutical compositions and feed additives.

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Disclosed is an O-phosphoserine sulfhydrylase (OPSS) mutant which has a-derived amino acid sequence corresponding to that of SEQ ID NO: 1 which is devoid of three to seven C-terminal amino acid residues. Also, a nucleic acid molecule encoding the OPSS mutant, an expression vector carrying the nucleic acid molecule, and a transformant transformed with the expression vector are disclosed. In addition, a method is provided for producing cysteine in which O-phospho-L-serine (OPS) is reacted with a sulfide in the presence of the OPSS mutant. The OPSS mutant has improved enzymatic activity and can be applied to the environmentally friendly production of L-cysteine through a simple enzymatic conversion reaction.

O-phosphoserine sulfhydrylase mutants and method for production of cysteine using the same

The present invention relates to a method for separating and purifying 1,4-diaminobutane at high purity and high yield from a fermented solution comprising 1,4-diaminobutane, through cell mass removement, desalination, concentration, impurities removal, and recovery. Also, provided is a method for separating and purifying 1,4-diaminobutane at high purity and high yield from a fermented solution 1,4-diaminobutane, through cell mass removement, desalination, low-temperature concentration, crystallization, filtration, high-temperature concentration and distillation.

Method for separating and purifying 1,4-diaminobutane from fermented solution

Disclosed herein is a novel bacteriophage which has specific bactericidal activity against one or morebacteria selected from the group consisting of, andwithout affecting beneficial bacteria, in addition to showing excellent tolerance to acid, heat and desiccation. The novel bacteriophage of the present invention can be widely used as an active ingredient for therapeutic agents, animal feeds or drinking water, cleaners and sanitizers for preventing and treating the infectious diseases caused byorincluding salmonellosis,food poisoning, Fowl Typhoid, and Pullorum disease or for controlling thebacteria. The present invention also provides important insights into prevention and control strategies againstinfection and suggests that the use of bacteriophage can be a novel, safe, and effectively plausible alternative to antibiotics for the prevention ofinfection in poultry.

Bacteriophage and antibacterial composition comprising the same

The present invention relates to a novel bacteriophage, more particularly, a bacteriophage that has a specific bactericidal activity against, or, a composition for the prevention or treatment of infectious diseases including salmonellosis andfood poisoning caused by, Fowl typhoid caused by, and Pullorum disease caused by, which comprises the bacteriophage as an active ingredient, and an animal feed, drinking water, cleaner, and sanitizer which comprise the bacteriophage as an active ingredient. The present invention also provides important insights into prevention and control strategies againstinfection and suggests that the use of bacteriophage can be a novel, safe, and effectively plausible alternative to antibiotics for the prevention ofinfection in poultry.

The present invention relates to a novel bacteriophage, more particularly, a bacteriophage that has a specific bactericidal activity againstand, a composition for the prevention or treatment of infectious diseases including salmonellosis andfood poisoning caused byor, Fowl typhoid caused by, and Pullorum disease caused bypullorum, which comprises the bacteriophage as an active ingredient, and an animal feed, drinking water, cleaner, and sanitizer which comprise the bacteriophage as an active ingredient.

Bacteriophage of the siphoviridae family and antibacterial compositions comprising the same

An L-threonine-producingin 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 recombinantmay produce L-threonine in a high yield, and thus may be widely used in medical, pharmaceutical, and feed industries, particularly for an animal feed.

Disclosed herein are is a novel bacteriophage which has specific bactericidal activity against one or morebacteria selected from the group consisting of, andPullorum without affecting beneficial bacteria. Disclosed are also compositions, animal feeds or drinking water, cleaners and sanitizers for preventing and treating the infectious diseases caused byorPullorum including salmonellosis,food poisoning, Fowl Typhoid, and Pullorum disease or for controlling thebacteria.

Disclosed herein is a novel bacteriophage which has specific bactericidal activity against one or morebacteria selected from the group consisting of, andwithout affecting beneficial bacteria, in addition to showing excellent tolerance to acid, heat and desiccation. The novel bacteriophage can be widely used as an active ingredient for therapeutic agents, animal feeds or drinking water, cleaners and sanitizers for preventing and treating the infectious diseases caused byorincluding salmonellosis,food poisoning, Fowl Typhoid, and Pullorum disease or for controlling thebacteria.

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Seoul, South Korea

Soo An Shin