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| 透明颤菌血红蛋白基因在金色链霉菌中的克隆与表达 | |
| 引用本文： | 孟春,叶勤,石贤爱,邱荔,宋思扬,郭养浩.透明颤菌血红蛋白基因在金色链霉菌中的克隆与表达[J].微生物学报,2002,42(3):305-310. |
| 作者姓名： | 孟春 叶勤 石贤爱 邱荔 宋思扬 郭养浩 |
| 作者单位： | 1. 福州大学生物与食品科学系,福州,350002；华东理工大学生物反应器国家重点实验室,上海,200237 2. 华东理工大学生物反应器国家重点实验室,上海,200237 3. 福州大学生物与食品科学系,福州,350002 4. 厦门大学生命科学学院,厦门,361005 |
| 基金项目： | 福建省科委资助项目 ( 99 H 4 6 )~~ |
| 摘 要： | 分别用质粒pJJ699与pUC19(vhb)，pIJ702与pBR322(vhb)，构建大肠杆菌链霉菌穿梭质粒，将透明颤菌血红蛋白基因转入金色链霉菌。在低溶解氧浓度下，透明颤菌血红蛋白的表达，可提高金色链霉菌氧的利用效率，产物合成比原始菌株提高40%～60%。在局部低氧的环境中，采用四环素抗性基因启动子带动血红蛋白基因表达，可有效发挥透明颤菌血红蛋白的氧传递效率，优于透明颤菌血红蛋白基因受溶解氧调控的天然启动子。 |
| 关 键 词： | 透明颤菌血红蛋白基因， 金色链霉菌， 四环素抗性基因启动子， 天然启动子 |
| 文章编号： | 0001-6209(2002)03-0305-06 |
Cloning and Expression of Vitreoscilia Hemoglobin in Streptomyces aureofaciens |
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| Meng Chun , Ye Qin Shi Xian'ai Qiu Li Song Siyang Guo Yanghao.Cloning and Expression of Vitreoscilia Hemoglobin in Streptomyces aureofaciens[J].Acta Microbiologica Sinica,2002,42(3):305-310. | |
| Authors: | Meng Chun Ye Qin Shi Xian'ai Qiu Li Song Siyang Guo Yanghao |
| Institution: | Department of Food Science and Biotechnology, Fuzhou University, Fujian 350002, China. |
| Abstract: | Vitreoscilla hemoglobin Gene was cloned in Streptomyces aureofaciens through E. coli-Streptomyces shuttle plasmids constructed by both pIJ699-pUC19(vhb) and pIJ702-pBR322(vhb). Under low dissolved oxygen conditions, expression of hemoglobin enhanced CTC yield of engineering strain more about 40%-60% that that of control by improving oxygen transmission in cells. Hemoglobin expression by Promoter of tetracycline resistance gene was more effective for oxygen transmission than that by its native promoter regulated by dissolved oxygen concentrations in environments of locally low concentrations of dissolved oxygen. |
| Keywords: | Vitreoscilla hemoglobin Gene Streptomyces aureofaciens Promoter of tetracycline resistance gene Native promoter |
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