Abstract:
The present invention relates to a method to quantify an organic compound containing sulfur. A compound containing sulfur can be quantified by a means of the method of the present invention without restriction, but the method is preferably more effective in quantifying an organic compound that is difficult to be quantified like a giant molecule (biomaterial) or an absorptive/hydrate material. The method of the present invention can very effectively quantify a high purity standard material of peptides or proteins from among the biomaterial. An internal standard solution, whereby any one isotope selected from (^33)S, (^34)S, and (^36)S is concentrated, is used in order to measure the isotope ratio of sulfur that is contained in methionine or cysteine among the amino acid of peptides or proteins. As a control material, a sulfur element standard solution is used as a correcting standard solution. A sample is acid-decomposed so that sulfur is decomposed into an inorganic material form. Then, the isotope ratio of any one isotope selected from (^33)S, (^34)S, and (^36)S-(^32)S is measured. By the means of the method by which the concentration of a sample is calculated, the investigation and quantification of the impurities including sulfur are performed together, so that a certification value (quantification value) which satisfies SI traceability can be obtained.
Abstract:
PURPOSE: An enzyme treatment apparatus of a protein is provided to reduce purification time and to enhance yield. CONSTITUTION: An enzyme treatment apparatus of a protein using a hollow fiber membrane comprises: an injection device for injecting proteins and enzymes; the hollow fiber membrane which is connected with the injection device; a device for capturing peptides passing through the hollow fiber membrane, which is connected to the outside of the hollow fiber membrane; and a discharging device for eluting the captured peptides.
Abstract:
본 발명은 예시니아 페스티스 코리스메이트 뮤타아제(Yersinia pestis chorismate mutase, YPCM) 유전자의 신호서열(signal sequence)을 이용하여 단백질을 대장균( E. coli )의 세포내 간극(periplasmic space)으로 수송하여 분리하는 단계를 포함하는 단백질 생산방법, 및 이를 위한 재조합 발현벡터에 관한 것으로서, 대장균에서 목적하는 단백질을 세포내 간극으로 수송하여 세포내 간극으로부터 단백질을 분리 정제함으로써, 간단하고 용이하며 경제적인 방법으로 목적 단백질을 높은 효율로 대량 생산할 수 있다. 특히, YPCM 유전자의 신호서열을 포함하는 재조합 발현벡터에 목적 단백질을 코딩하는 유전자를 도입하여 과잉발현시키면, 어떠한 목적 단백질도 간편하고 경제적인 분리·정제 과정을 통해 대량으로 얻을 수 있다. 예시니아 페스티스 코리스메이트 뮤타아제, 신호서열, 대장균, 세포내 간극, 수송, 과잉발현
Abstract:
PURPOSE: A method for quantitating nucleic acids is provided to accurately and efficiently quantitate nucleic acid impurities with high sensitivity. CONSTITUTION: A method for quantitating nucleic acids comprises: a step of performing real-time PCR using a random primer; and a step of determining the amount of nucleic acids based on the correlation between amplified result and nucleic acid amount. The amount of the nucleic acid is 80 fg- 8ng. The nucleic acids are quantitated using one or more primers among sequence numbers 1-4.
Abstract:
The present invention relates to a kit for a quantitative analysis of stable isotope labeled peptide, and a method for a quantitative analysis using the same, and more specifically, to a kit for a quantitative analysis of stable isotope labeled peptide using a hollow fiber membrane, a device for a quantitative analysis, and a method for a quantitative analysis using the same.
Abstract:
본 발명은 중공사막을 이용한 단백질의 효소 처리장치 및 이를 이용한 온-라인 프로테오믹스 방법에 관한 것으로, 상기 본 발명에 따른 단백질의 효소 처리 장치는 기존 효소처리과정에서 발생되는 효소활성도의 낮은 재현성을 근본적으로 해결하여 효소처리과정을 통해 회수되는 펩티드의 회수율이 높을 뿐 아니라 단일 단계로 분리ㆍ정제함으로써 정제에 필요한 시간을 줄이고 더 높은 수율을 가져올 수 있으며, 특히 인간의 질병과 관련된 바이오마커 발굴 연구에 있어서는 단백질의 검출 감도를 고효율로 하면서도 통계적인 분석방법을 통해 질병 특이적 단백질 바이오 마커 개발에 용이하게 적용할 수 있다.