当前位置: X-MOL 学术World J. Microbiol. Biotechnol. › 论文详情
Our official English website, www.x-mol.net, welcomes your feedback! (Note: you will need to create a separate account there.)
Ethanol tolerance assessment in recombinant E. coli of ethanol responsive genes from Lactobacillus buchneri NRRL B-30929
World Journal of Microbiology and Biotechnology ( IF 4.0 ) Pub Date : 2020-11-06 , DOI: 10.1007/s11274-020-02953-9
Siqing Liu , Christopher Skory , Nasib Qureshi

We previously identified specific proteins associated with ethanol stress response in a Lactobacillus buchneri strain capable of growing in 10% ethanol. In the current study, the exceptional roles of ethanol responsive genes are examined to determine if they can increase ethanol tolerance in E. coli host cells. The recombinant strains carrying ethanol responsive genes were subjected to growth analyses in media with and without 4% ethanol. Among the expression of these genes and growth analyses of the recombinant strains in ethanol, six genes Lbuc_0522 (NADPH-dependent methylglyoxal reductase), Lbuc_0354 (succinate semialdehyde dehydrogenase), Lbuc_1211(threonyl_tRNA synthetase), Lbuc_2051 (nitroreductase), Lbuc_0707 (branched chain amino acid aminotransferase) and Lbuc_1852 (proline-specific peptidase) conferred host cells tolerance to 4% ethanol. Six genes Lbuc_1523 (phage major capsid protein, HK 97 family), Lbuc_1319 (phosphoglycerate kinase), Lbuc_0787 encoding fumarylacetoacetate hydrolase, Lbuc_1219 encoding UDP-N-acetylmuramate-L-alanine ligase, Lbuc_0466 encoding ornithine carbamoyltransferase and Lbuc_0858 encoding glycine hydroxymethyltransferase showed no impact on growth in media with 4% ethanol with IPTG induction when compared with E. coli carrying control pET28b plasmid. The expression of two genes Lbuc_1557 (S-layer glycoprotein) and Lbuc_2157 (6-phosphogluconate dehydrogenase) resulted ethanol sensitivity phenotype.

中文翻译:

布氏乳杆菌 NRRL B-30929 乙醇反应基因在重组大肠杆菌中的乙醇耐受性评估

我们之前在能够在 10% 乙醇中生长的布氏乳杆菌菌株中鉴定了与乙醇应激反应相关的特定蛋白质。在目前的研究中,对乙醇反应基因的特殊作用进行了检查,以确定它们是否可以增加大肠杆菌宿主细胞的乙醇耐受性。携带乙醇反应基因的重组菌株在含有和不含 4% 乙醇的培养基中进行生长分析。在这些基因的表达和乙醇中重组菌株的生长分析中,六个基因Lbuc_0522(NADPH依赖性甲基乙二醛还原酶)、Lbuc_0354(琥珀酸半醛脱氢酶)、Lbuc_1211(苏氨酰_tRNA合成酶)、Lbuc_2051(Lbuc_2051(NADPH依赖性甲基乙二醛还原酶)、Lbuc_2051(Lbuc_2051)酸氨基转移酶)和 Lbuc_1852(脯氨酸特异性肽酶)赋予宿主细胞对 4% 乙醇的耐受性。六个基因 Lbuc_1523(噬菌体主要衣壳蛋白,HK 97 家族)、Lbuc_1319(磷酸甘油酸激酶)、Lbuc_0787 编码延胡索酰乙酰乙酸水解酶、Lbuc_1219 编码 UDP-N-乙酰胞壁酸-L-丙氨酸连接酶、Lbuc_1219 编码甘氨丁酸甲基氨基转移酶和 Lbuc_04865 羟甲基转移酶显示与携带对照 pET28b 质粒的大肠杆菌相比,IPTG 诱导在 4% 乙醇培养基中的生长。两个基因 Lbuc_1557(S 层糖蛋白)和 Lbuc_2157(6-磷酸葡萄糖酸脱氢酶)的表达导致乙醇敏感性表型。与携带对照 pET28b 质粒的大肠杆菌相比,编码鸟氨酸氨基甲酰基转移酶的 Lbuc_0466 和编码甘氨酸羟甲基转移酶的 Lbuc_0858 显示对 IPTG 诱导的 4% 乙醇培养基中的生长没有影响。两个基因 Lbuc_1557(S 层糖蛋白)和 Lbuc_2157(6-磷酸葡萄糖酸脱氢酶)的表达导致乙醇敏感性表型。与携带对照 pET28b 质粒的大肠杆菌相比,编码鸟氨酸氨基甲酰基转移酶的 Lbuc_0466 和编码甘氨酸羟甲基转移酶的 Lbuc_0858 显示对 IPTG 诱导的 4% 乙醇培养基中的生长没有影响。两个基因 Lbuc_1557(S 层糖蛋白)和 Lbuc_2157(6-磷酸葡萄糖酸脱氢酶)的表达导致乙醇敏感性表型。
更新日期:2020-11-06
down
wechat
bug