Abstract:
본 발명은 아연을 이용한 위상 해결 방법에 관한 것이다. 보다 구체적으로는 본래에 아연 결합 지점이 없는 단백질에 외래의 아연을 접촉시키는 단계; 상기 단백질과 외래의 아연에 X-선을 조사하는 단계; 및 상기 외래 아연의 이상 신호(anomalous signal)을 관측하는 단계를 포함하는 것을 특징으로 하는 단백질 구조 결정방법이다. 본 발명은 본래 아연을 가지고 있지 않아서, 중-원소 X-선 분석이 불가능하였던 단백질에 외래의 아연을 접촉시킴으로서 중-원소 X선 분석이 가능하게 하였다. 따라서 본 발명은 중-원소 X선 분석을 할 수 있는 단백질의 범위를 대폭확대시켰으며, 거의 모든 단백질의 분석에 이용이 가능하고, 간편하고 쉽게 단백질의 구조를 밝히 수 있으며, 이미 결정화된 단백질의 중-원소 분석을 가능하게 한다.
Abstract:
본원은 비브리오 균 유래의 발효호흡전환 A 단백질 및 이와 글루코스특이적 효소 복합체의 단백질 결정구조, 이의 제조방법 및 이의 저해제 스크리닝 방법에 관한 것이다. 본원은 파이루베이트의 발효에 관여하는 발효호흡전환 A 단백질의 효소 활성영역 및 활성기작에 관한 세부정보를 제공하여, 신규 항생제 후보물질의 개발에 이용될 수 있다. 또한 발효호흡전환 A 단백질은 파이루베이트에 대한 월등한 효소활성으로 바이오에탄올 제조에도 유용하게 사용될 수 있다.
Abstract:
The present invention relates to a method of solving a phase by using zinc. More specifically, the present invention comprises: a step of contacting foreign zinc to a protein not having a zinc binding point; a step of irradiating an x-ray to the protein and foreign zinc; and a step of observing an anomalous signal of foreign zinc. The present invention originally does not have zinc, thus enables an x-ray analysis of a heavy element by contacting foreign zinc to the protein in which x-ray analysis of heavy element was impossible. Therefore, the present invention expands drastically a range of protein enabling the x-ray analysis of the heavy element, allows to analyze nearly all protein, easily reveals structures of the protein, and can facilitate the analysis of the heavy element of a pre-crystallized protein.
Abstract:
PURPOSE: A method for producing ethanol using a strain which expresses FrsA proteins is provided to reduce use of a biomass and to effectively produce bioethanol. CONSTITUTION: A transformed strain expresses frsA gene derived from V. vulnificus. frsA is denoted by sequence number 1. The strain is bacteria or yeast including E.coli, Erwinia chrysanthemi, Zymomonas mobilis, Klebsiella spp, Bacillus stearothrermophilus, Kluveromyces spp., Pachysolen tanophilus, Lactic acid bacteria, Clostridium spp., Thermococcus spp., Thermococcus onnurineus, Candida shehatae, Saccharomyces eravisiae, or Pichia stipitis. The strain expresses alcohol dehydrogenase gene and IIAGIc gene. A method for producing bioethanol comprises: a step of providing the transformed strain; a step of contacting the microorganism with a carbon source; and a step of culturing the microorganism under an optimal condition for fermentation.
Abstract:
PURPOSE: A method for preparing vibrio-derived FrsA protein and protein crystalline structure IIAGIc complex and FrsA protein is provided to manufacture bio ethanol. CONSTITUTION: A FrsA protein contains V.vulnificus-derived amino acid of sequence number 1. The FrsA protein comprises N-terminal helix region containing 1-165th residues of sequence number 1, C-terminal alpha/beta region containing 166-415th of sequence number 1, and a space of interface of the region. The N-terminal helix reagion contains 7 alpha-helix. The C-terminal alpha/beta region contains parallel beta-sheets of 8 strands. An alpha-helix is inserted between the beta-sheets.
Abstract:
A method for screening a therapeutic agent of Parkinsons disease is provided to confirm a material which reduces the aggregation of human DJ-1 protein and screen the therapeutic agent. An aggregate of filament form binds with inorganic phosphate (Pi) in a human DJ-1 protein. A method for screening a therapeutic agent for Parkinsons disease using a human DJ-1 protein comprises: a step of culturing cells; a step of contacting potential material to the cells; a step of confirming the decrease of the aggregateion of human DJ-1 protein in the cells ; and a step of selecting a therapeutic agent for Parkinsons diseases, which reduces the aggregation of human DJ-1 protein. A method for confirming the aggregation is to measure by immunochemical method which is with a fluorescence staining material.