Seoul National University

Cj Cheiljedang Corporation

Freeyo Corp.

Eun Young Hong

Young Lyeol Yang

Jaehun Lee

Ae Ji Jeon

Sung Hyun Park

Byung Gee Kim

Byung-Gee Kim

Hee-See Moon

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 video curation service (VCS) method provides video content provided by an open streaming service (OSS) by adding video content information in conjunction with the OSS. The VCS method comprises: a step in which a subtitlist produces subtitle data with regard to predetermined video content provided from an OSS server, and uploads same onto a VCS server; and a step in which the VCS server operates a web or app page for viewing video content on a viewer terminal in accordance with a request of a viewer.

Video curation service method

The present invention relates to a method for producing a lysine carboxylase mutant strain, characteristics of the mutant strain, a gene encoding the lysine decarboxylase mutant strain, and a method for producing cadaverine using the same. The present invention provides lysine decarboxylase derived fromimproved through a protein engineering variation. In addition, the lysine decarboxylase mutant strain of the present invention increases activity, pH stability, and thermal stability at the time of producing cadaverine, thereby reducing production costs, through increasing a yield and productivity.

Method for developing lysine decarboxylase mutant and application thereof

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Seoul, South Korea

Eun Young Hong