Seoul National University

Cj Cheiljedang Corporation

Amorepacific Corporation

Genechem Inc.

Geneofocus Co., Ltd.

Byung-Gee Kim

Jin Sung Kim

Young Lyeol Yang

Sang Mi Lee

Jaehun Lee

Eun Mi Kim

Ae Ji Jeon

Dae Hee Kim

Kyeonghwan Hwang

Eun Young Hong

Sun Youp Kang

Jin Suk Woo

Won Min Seo

Yun Hee Choi

Ji Young Yang

Soo-Keun Choi

Heung-Chae Jung

Hee-See Moon

Jae-Kyung Song

Jae-gu Pan

Jinkyung Choi

June-Hyung Kim

The present application relates to a variant of ornithine decarboxylase or protein, a polynucleotide encoding the same, a microorganism containing the same, and a method for producing putrescine using the same. The present invention achieves effects of increasing putrescine productivity, production efficiency or production selectivity, suppressing side reactions, and saving the cost involved in purifying putrescine.

Ornithine decarboxylase variant and method for producing putrescine by using same

A composition contains, as an effective component, theasinensin A, an enantiomer thereof, a pharmaceutically acceptable salt thereof, a hydrate thereof, or a solvate thereof. The composition has an excellent stability and provides wrinkle-reducing or skin elasticity-enhancing benefits, and skin-brightening benefits by containing theasinensin A, an enantiomer thereof, a pharmaceutically acceptable salt thereof, a hydrate thereof, or a solvate thereof, as an effective component.

Cosmetic composition comprising theasinensin A

The present invention relates to a method for preparing a sialic acid derivative characterized by performing both of a process for preparing CMP-N-acetylneuraminic acid using N-acetyl-D-glucosamine and a process for preparing the sialic acid (neuraminic acid) derivative that combines a sialic acid with a galactose derivative or a lactose derivative, together, in one reactor. According to the method for preparing a sialic acid derivative of the present invention, expensive cytidine 5'-monophosphate (CMP) is capable of being recycled in a reactor, such that an amount of the CMP introduced into the reactor may be reduced, and the sialic acid derivative is capable of being prepared at a significantly high efficiency by using cheap N-acetyl-D-glucosamine, and pyruvate as substrates.

Method for preparing sialic acid derivative

The present invention relates to a method for display of proteinson spore surface and a method for improving protein with rapidity using the same, which comprises the steps of (i) preparing a vector for spore surface display comprising a gene construct containing a gene encoding spore coat protein and a gene encoding a protein of interest, wherein, when expressed, the gene construct expresses a fusion protein between the spore coat protein and the protein of interest, (ii) transforming a host cell with the vector for spore surface display; (iii) displaying the protein of interest on a surface of a spore of the host cell; and (iv) recovering the spore displaying on its surface the protein of interest.

Method for expression of proteins on spore surface

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Seoul, South Korea

Byung-Gee Kim