详细信息
透明颤菌血红蛋白基因在产TRAIL蛋白大肠杆菌中的克隆表达 ( EI收录)
Cloning and Expression of Vitreoscilla Hemoglobin in Escherichia coli for TRAIL Production
文献类型:期刊文献
中文题名:透明颤菌血红蛋白基因在产TRAIL蛋白大肠杆菌中的克隆表达
英文题名:Cloning and Expression of Vitreoscilla Hemoglobin in Escherichia coli for TRAIL Production
作者:杨凌超[1];孙爱友[1];沈亚领[1];魏东芝[1];龚毅[2];马昱澍[1]
机构:[1]华东理工大学生物反应器工程国家重点实验室生物化学研究所,上海200237;[2]中国科学院上海生命科学研究院生物工程中心,上海200233
年份:2006
卷号:32
期号:8
起止页码:925
中文期刊名:华东理工大学学报(自然科学版)
外文期刊名:Journal of East China University of Science and Technology
收录:CSTPCD;;EI(收录号:20064110166025);Scopus;北大核心:【北大核心2004】;CSCD:【CSCD2011_2012】;
基金:国家863重大科技专项基金资助(2002AA2Z345A)
语种:中文
中文关键词:透明颤菌血红蛋白基因(vgb);TRAIL;大肠杆菌;发酵;乙酸
外文关键词:Vitreoscilla hemoglobin gene (vgb);TNF-related apoptosis inducing ligand (TRAIL); Escherichia coli ; fermentation ; acetic acid
摘要:为解决大肠杆菌高密度发酵生产TRA IL过程中的供氧矛盾,提高菌体的发酵密度,在大肠杆菌中引入透明颤菌血红蛋白基因(vgb)。聚合酶链反应(PCR)检验和CO差光谱法检验表明:vgb基因能够在C 600(pBV 220-TRA IL)中表达并受溶氧调控,重组菌CTV具有良好的遗传稳定性。3.7 L发酵罐实验表明:在同样的发酵条件下,含vgb基因的重组菌CTV的最高菌体密度为对照菌的1.64倍,达到50.6 g/L,乙酸积累为对照菌的55.6%,TRA IL蛋白产量提高了70%,达到2.8 g/L。
Vitreoscilla hemoglobin gene (vgb) was cloned and expressed in Escherichia coli C600 (pBV220-TRAIL) for improving the oxygen uptake rate (OUR) and cell density. PCR reactions and carbon monoxide different spectra analysis showed that vgb was successfully expressed in C600 (pBV220-TRAIL), and this expression system was regulated by dissolved oxygen (DO). Recombinant engineering strain CTV maintained genetic stability well. Under the same culture conditions, the highest cell density of CTV (50.6 g/L) and the yield of TRAIL (2.8 g/L)was 1.64-fold and 1.7-fold higher than that of control in 3.7 L bioreactor, respectively, whereas the acetic acid concentration was decreased by 45%.
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