Korea Advanced Institute of Science and Technology

Korea Institute of Science and Technology

Avellino Co., Ltd.

Genofocus, Inc.

Tae Jung Park

Sang Yup Lee

Jong Hyun Choi

Dong Young Kim

Seong M Jo

Yang Kyu Choi

So Young Yoo

Sung-Yeon Jang

Seok Jae Lee

Gene Lee

Jung Kuk Yun

Nam Su Heo

Bon Sang Gu

Jae Hyuk Ahn

Jae-Gu Pan

Heung-Chae Jung

Soo-Keun Choi

Do Kyun Kim

Ho Seok Park

Won Hi Hong

Jong Pil Park

Bong Gill Choi

A multi-spot metal-capped nanostructure array nucleic acid chip for diagnosing corneal dystrophy, and more particularly to a multi-spot metal-capped nanostructure array nucleic acid chip capable of employing LSPR (localized surface plasmon resonance) optical properties, a preparation method thereof, and a multi-spot metal-capped nanostructure array nucleic acid chip for diagnosing BIGH3 gene mutations, which can diagnose various corneal dystrophies. The metal-capped nanostructure array nucleic acid chip can be combined with analysis devices, including a light source, a detector, a spectrophotometer and a computer, to provide an LSPR optical property-based optical biosensor, and the use of the multi-spot metal-capped nanostructure array nucleic acid chip for diagnosing BIGH3 gene mutations allows the simultaneous diagnosis of various corneal dystrophies that are genetic ocular diseases.

Multi-spot metal-capped nanostructure array nucleic acid chip for diagnosis of corneal dystrophy and preparation method thereof

The present invention relates to a method for expressing a target protein on the surface of a microorganism usingexosporium protein. More particularly, to an expression vector constructed such that it comprises bclA gene encodingexosporium protein BclA or fragments thereof as a cell surface anchoring motif and the target protein can be expressed on the surface of a cell in a form fused with BclA or a fragment thereof when the gene encoding the target protein is expressed in a host cell, as well as, a method for expressing a target protein on the surface of a microorganism using the vector. The expression vector according to the present invention is capable of effectively expressing a target protein or a peptide on the cell surface using BclA,exosporium protein as a cell surface anchoring motif, and since a target protein can be stably expressed on the cell surface in large amounts by culturing a microorganism transformed with the expression vector, thus making it possible to effectively use for the various purposes of recombinant live vaccines, whole cells absorbents, whole cell bioconversion and the like.

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Disclosed are a graphene composite nanofiber and a preparation method thereof. The graphene composite nanofiber is produced by dispersing graphenes to at least one of a surface and inside of a polymer nanofiber or a carbon nanofiber having a diameter of 1&#x2dc;1000 nm, and the graphenes include at least one type of monolayer graphenes, and multilayer graphenes having a thickness of 10 nm or less. The graphene composite nanofiber can be applied to various industrial fields, e.g., a light emitting display, a micro resonator, a transistor, a sensor, a transparent electrode, a fuel cell, a solar cell, a secondary cell, and a composite material, owing to a unique structure and property of graphene.

Graphene composite nanofiber and preparation method thereof

The present invention relates to a method of preparing heavy metal nanoparticles using a heavy metal-binding protein. More specifically, relates to a method for preparing heavy metal structures, comprising the steps of: culturing a microorganism transformed with a gene encoding a heavy metal-binding protein, in a heavy metal ion-containing medium, to produce heavy metal structures in the microorganism; and collecting the produced heavy metal structures, as well as nanoparticles of heavy metal structures prepared according to said method. Unlike prior methods of preparing quantum dots by physically binding metal materials, the quantum dots disclosed herein can be efficiently produced by expressing the heavy metal-binding protein in cells. In addition, the quantum dots are useful because they can solve an optical stability problem that is the shortcoming of organic fluorophores.

Method for preparing metal nanoparticle using metal binding protein

The present invention relates to a bio-silica chip comprising a silica-binding protein and a fabrication method thereof, and more particularly to a bio-silica chip in which a fusion protein of a silica-binding protein and a probe protein is immobilized on a chip comprising a silica layer, a fabrication method thereof and a method of using the bio-silica chip to detect interactions with biomaterials. The bio-silica chip will be very useful in biosensors, etc., because the bio-silica chip is advantageous in that it does not cause non-specific protein binding in the detection of protein-DNA, protein-ligand, protein-antibody, protein-peptide, protein-carbohydrate, protein-protein and cell-biomaterial interactions. Also, in the method for fabricating the bio-silica chip, a probe chip can be selectively immobilized on a silica device chip, which is widely used in biosensors, without a chemical surface treatment process. Thus, a chip fabricating process is simplified and a complicated process for purifying the probe protein becomes unnecessary, thus providing great improvements in productivity and economic efficiency.

Bio-silica chip comprising silica binding protein and method for fabricating the same

The present invention relates to a method for expressing a target protein on an exosporium forming the outermost surface of bacterial spores. More particularly, the present invention relates to a method for expressing a target protein on the surface of cells and spores using an exosporium as a matrix for surface expression, and methods for the production of a protein array, the production of antibodies, the separation of a certain substance from a mixture, bioconversion, and the improvement of a target protein, which are characterized by using the cells or spores having the target protein that was expressed on the surface by the above expression method. The method for expressing the target protein on the surface of the spore outer membrane of the gene carriers according to the present invention has effects in that a variety of the target proteins can be expressed and the level of surface expression of the target protein is increased compared to the existing technology, and also the structural stability of the gene carriers having the target protein expressed on their surface, the viability of the host, and the rapidity of the screening method, are greatly increased.

Method for whole surrounding surface display of target proteins using bacterial exosporium

Growing community of inventors

Daejeon, South Korea

Tae Jung Park