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    • 3. 发明公开
    • 대장균에서 활성형 인간 인터루킨-6의 생산 및 정제방법
    • 生产和净化生物活性人白介素-6的方法
    • KR1020100001632A
    • 2010-01-06
    • KR1020080061624
    • 2008-06-27
    • 한국생명공학연구원
    • 이은교이혁원백정은정준기이홍원안정오김천석이승희이주환
    • C07K14/54
    • PURPOSE: A method and purifying human interleukin-6 which is active in E.coli is provided to overexpress human interleukin-6 fusion protein in a soluble form. CONSTITUTION: A human interleukin-6 fusion protein contains a human interleukin-6; a fusion partner comprising maltose binding protein, disulfide binding A protein and disulfide binding C protein; and a peptide linker. The fusion partner and peptide linker are connected to N-terminal of human interleukin-6. A method for preparing the human interleukin-6 in E.coli comprises: a step of preparing a recombinant vector comprising the human interleukin-6 coding sequence, fusion partner connected to N-terminal and coding sequence of peptide linker; a step of introducing the recombinant vector to E.coli to express human interleukin-6 fusion protein; a step of isolating fusion protein and removing fusion partner using protease; and a step of performing reversed-phase chromatography to purify the human interleukin-6 recombinant protein.
    • 目的:提供一种在大肠杆菌中有活性的人白细胞介素-6的方法,其以可溶形式过表达人白细胞介素-6融合蛋白。 构成:人白介素-6融合蛋白含有人白介素-6; 包含麦芽糖结合蛋白,二硫键结合蛋白质和二硫键结合蛋白质的融合配偶体; 和肽接头。 融合配偶体和肽接头连接到人白介素-6的N末端。 一种在大肠杆菌中制备人白介素-6的方法,包括:制备包含人白细胞介素-6编码序列,与N末端连接的融合配偶体和肽接头的编码序列的重组载体的步骤; 将重组载体导入大肠杆菌以表达人白细胞介素-6融合蛋白的步骤; 使用蛋白酶分离融合蛋白并去除融合伴侣的步骤; 以及进行反相色谱以纯化人白细胞介素-6重组蛋白的步骤。
    • 6. 发明公开
    • 형질전환 동물의 유즙으로부터 재조합 단백질을 정제하기위한 전처리 방법
    • 用于从转基因动物乳清除重组蛋白的预处理方法
    • KR1020080047104A
    • 2008-05-28
    • KR1020060117027
    • 2006-11-24
    • 한국생명공학연구원
    • 정봉현이은교정준기이승희박경미백정은
    • C07K1/14C07K1/30
    • A method for pre-treating milk of a transgenic animal is provided to improve the purification efficiency of recombinant proteins from the transgenic animal milk by shortening the purification time into about 4 hours and showing the recovery rate of at least 80%, thereby being used for mass-producing the recombinant proteins. A method for pre-treating milk of a transgenic animal before purification of recombinant proteins from the milk of the transgenic animal in case of precipitation of the recombinant protein not being easy comprises the steps of: (a) centrifuging the transgenic animal milk at a temperature of 4-37 deg.C with 4,000-12,000 rpm for 10-40 minutes to recover supernatant therefrom; (b) adding a first precipitating agent to the supernatant to precipitate impurities firstly; (c) adding a transition metal salt to the product obtained from the step(b) to precipitate impurities secondly; and (d) recovering the supernatant obtained from the step(c) and subjecting it to a precise filtration to remove impurities therefrom, wherein the steps(b) and (c) may reverse the order or performed at the same time. A method for pre-treating milk of a transgenic animal before purification of recombinant proteins from the milk of the transgenic animal in case of precipitation of the recombinant protein being easy comprises the steps of: (a) centrifuging the transgenic animal milk at a temperature of 4-37 deg.C with 4,000-12,000 rpm for 10-40 minutes to remove fat therefrom and recovering supernatant therefrom; (b) adding a first precipitating agent to the supernatant to precipitate recombinant proteins firstly; (c) adding a transition metal salt to the product obtained from the step(b) to precipitate the recombinant proteins secondly; and (d) after dissolving the precipitated recombinant protein in a buffer solution, subjecting the solution to a precise filtration to remove impurities therefrom, wherein the steps(b) and (c) may reverse the order or performed at the same time. Further, the transition metal salt is salt comprising a transition metal selected from a group consisting of Mn, Fe, Co, Ni, Cu and Zn.
    • 提供了一种用于转基因动物的牛奶预处理的方法,以通过将纯化时间缩短至约4小时并显示至少80%的回收率来改善来自转基因动物奶的重组蛋白的纯化效率,从而用于 大量生产重组蛋白。 在沉淀重组蛋白质不容易的情况下,从转基因动物的乳中纯化重组蛋白质之前对转基因动物的牛奶进行预处理的方法包括以下步骤:(a)在温度下离心转基因动物奶 4-40℃,4,000-12,000rpm,10-40分钟,回收上清液; (b)首先向上清液中加入第一沉淀剂以沉淀杂质; (c)向步骤(b)得到的产物中加入过渡金属盐,以沉淀杂质二次; 和(d)回收由步骤(c)获得的上清液并对其进行精确过滤以除去杂质,其中步骤(b)和(c)可以颠倒或同时进行。 在重组蛋白质沉淀容易的情况下从转基因动物的乳中纯化重组蛋白质之前对转基因动物的牛奶进行预处理的方法包括以下步骤:(a)在转基因动物奶的温度 4-7℃,4,000-12,000rpm 10-40分钟,以除去脂肪,并从中回收上清液; (b)首先向上清液中加入第一沉淀剂沉淀重组蛋白质; (c)向由步骤(b)获得的产物中加入过渡金属盐以沉淀重组蛋白质; 和(d)将沉淀的重组蛋白质溶解在缓冲溶液中后,对溶液进行精确过滤以除去杂质,其中步骤(b)和(c)可以颠倒或同时进行。 此外,过渡金属盐是包含选自Mn,Fe,Co,Ni,Cu和Zn中的过渡金属的盐。