...
首页> 外文期刊>Biotechnology and Bioengineering >Metabolic engineering to improve 1,5-diaminopentane production from cellobiose using beta-glucosidase-secreting Corynebacterium glutamicum
【24h】

Metabolic engineering to improve 1,5-diaminopentane production from cellobiose using beta-glucosidase-secreting Corynebacterium glutamicum

机译:使用β-葡萄糖苷酶分泌棒状谷氨酸棒状谷氨酸细胞生成的新代谢工程改善1,5-二氨基戊烷生产

获取原文
获取原文并翻译 | 示例
           

摘要

Microbial production of 1,5-diaminopentane (DAP) from renewable feedstock is a promising and sustainable approach for the production of polyamides. In this study, we constructed a beta-glucosidase (BGL)-secreting Corynebacterium glutamicum and successfully used this strain to produce DAP from cellobiose and glucose. First, C. glutamicum was metabolically engineered to produce l-lysine (a direct precursor of DAP), followed by the coexpression of l-lysine decarboxylase and BGL derived from Escherichia coli and Thermobifida fusca YX (Tfu0937), respectively. This new engineered C. glutamicum strain produced 27 g/L of DAP from cellobiose in CGXII minimal medium using fed-batch cultivation. The yield of DAP was 0.43 g/g glucose (1 g of cellobiose corresponds to 1.1 g of glucose), which is the highest yield reported to date. These results demonstrate the feasibility of DAP production from cellobiose or cellooligosaccharides using an engineered C. glutamicum strain.
机译:来自可再生原料的1,5-二氨基戊烷(DAP)的微生物产生是生产聚酰胺的有希望和可持续的方法。 在这项研究中,我们构建了一种β-葡糖苷酶(BGL) - 分泌棒状杆菌谷氨酰胺,并成功地使用该菌株来产生来自纤维二糖和葡萄糖的DAP。 首先,将C.谷氨酰胺改造以产生L-赖氨酸(DAP的直接前体),然后分别衍生自大肠杆菌和Thermobifida Fusca YX(TFU0937)的L-赖氨酸脱羧酶和BGL的共表达。 这种新的工程化C.谷氨酰胺菌株在CGXII最小培养基中产生27g / L来自Cellobiose的培养基培养。 DAP的产率为0.43g / g葡萄糖(1g纤维二糖对应于1.1g葡萄糖),这是迄今为止报告的最高产量。 这些结果证明了使用工程化的C.谷氨酸菌株从纤维二糖或脱摩冬糖的可行性。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱:kefu@zhangqiaokeyan.com

京公网安备:11010802029741号 ICP备案号:京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有
  • 客服微信

  • 服务号