Cj Cheiljedang Corporation

Cj Corporation

Cheiljedang Corp.

Cj Cheiledang Corporation

Sung Hoo Jhon

Hye Won Um

Yong Uk Shin

So Young Kim

Su Jin Choi

Young Lyeol Yang

Kyoung Min Lee

Chang Il Seo

Soo An Shin

Min Sun Kang

Hyun Ah Kim

Sang Mok Lee

Hyang Choi

Kwang Ho Na

Sung Kwang Son

In Kyung Heo

Ju Eun Kim

Han Jin Lee

Han Won Lee

Kwang Ho Lee

Ji Sun Lee

Jin Sook Chang

Young Bin Hwang

Hye Min Park

Chul Ha Kim

Jae Yeong Ju

Byung Hoon Jung

Hye Won Kim

Byeong Cheol Song

Sol Kim

Hee Kyoung Jung

Seon Hye Kim

Il Chul Kim

Hyun Ae Bae

Eun Sung Koh

Won Sik Gwak

Eun Bin Yang

Jae Hyun Jo

Chong Ho Lee

Ghee Hong Jin

Hyune Mo Rho

Hongxian Li

Eun Ji Koh

Hyun Hwan Lee

Young Hyoung Goh

Young Hyong Goh

The present invention relates to a polypeptide having a resistant to feedback inhibition by methionine and an activity of homoserine O-succinyltransferase, a O-succinyl homoserine-producing microorganism expressing the polypeptide, and a method for producing O-succinyl homoserine using the same.

[object Object]

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 relates to a method of producing bio-based homoserine lactone and bio-based organic acid through hydrolysis of O-acyl homoserine produced by a microorganism in the presence of an acid catalyst. According to the present invention, O-acyl homoserine produced by a microorganism is used as a raw material for producing 1,4-butanediol, gamma-butyrolactone, tetrahydrofuran and the like, which are industrially highly useful. The O-acyl homoserine produced by a microorganism can substitute conventional petrochemical products, can solve environmental concerns, including the emission of pollutants and the exhaustion of natural resources, and can be continuously renewable so as not to exhaust natural resources.

Method for producing bio-based homoserine lactone and bio-based organic acid from O-acyl homoserine produced by microorganisms

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 recombinant microorganism having enhanced ability of producing putrescine at high yield, which is generated by weakening the activity of NCgl1469 in a microorganism ofgenus that is modified to produce putrescine, and a method for producing putrescine using the same.

Recombinant microorganisms with an improved productivity of putrescine and method for producing putrescine using the same

Microorganisms for production of O-succinylhomoserine and method for production of O-succinylhomoserine 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 a recombinant microorganism having enhanced ability to produce putrescine at high yield, wherein the activity of NCg10101 is weakened in a microorganism of genusthat has been modified to produce putrescine, and a method for producing putrescine using the same.

Recombinant microorganism having an enhanced ability to produce putrescine and a method for producing putrescine using the same

The present invention relates to a method for increasing L-methionine productivity and organic acid productivity. More particularly, the present invention relates to a method which involves adding a mixture containing methyl mercaptan and dimethyl sulfide at a appropriate ratio to O-acetyl homoserine or O-succinyl homoserine and to an enzyme having an activity of converting methionine precursor into L-methionine, so as to perform an enzyme reaction, to thereby improve the conversion rate of L-methionine and organic acid from the L-methionine precursor, and thus increasing L-methionine yield as compared to conventional method.

Method for increasing methionine productivity using a mixture of methyl mercaptan and dimethyl sulfide

Disclosed herein are a microorganism strain capable of producing the L-methionine precursor O-acetyl homoserine in high yield and a method of producing O-acetyl homoserine using the same. The microorganism strain is a strain ofsp. in which an acetyl-CoA synthase gene (acs) and/or a pantothenate kinase gene (coaA) encoding a pantothenate kinase gene refractory to feedback inhibition by CoA is introduced and expressed.

Microorganism producing O-acetyl-homoserine and the method of producing O-acetyl-homoserine using the microorganism

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 is a strain ofsp., capable of producing O-acetyl homoserine in high yield, with the introduction and enhancement therein of the activity of: homoserine acetyl transferase, aspartokinase and homoserine dehydrogenase; and at least one enzyme selected from a group consisting of phosphoenolpyruvate carboxylase, aspartate aminotransferase and aspartate semi-aldehyde dehydrogenase. Also, a method of producing O-acetyl homoserine using the strain is provided.

An alkaline lipase isolated fromRH530 and a polynucleotide sequence encoding the same are provided. The isolated alkaline lipase has an amino acid sequence of SEQ ID NO: 5 and the polynucleotide having a base sequence of SEQ ID NO: 4 encodes the alkaline lipase. The isolated alkaline lipase exhibits an optimal activity at a high pH level, that is, at pH 10&#x2dc;11, and has very high ratio of residual enzyme activity and high compatibility with a surfactant, so that it can be suitably used as an enzyme for a laundry detergent.

Alkaline lipase from Vibrio metschnikovii RH530 N-4-8 and nucleotide sequence encoding the same

Growing community of inventors

Seoul, South Korea

Sung Hoo Jhon