4.4 Article

Environmental Performance of Pseudomonas putida with a Uracylated Genome

期刊

CHEMBIOCHEM
卷 21, 期 22, 页码 3255-3265

出版社

WILEY-V C H VERLAG GMBH
DOI: 10.1002/cbic.202000330

关键词

biocontainment; GMO escape; horizontal gene transfer; Pseudomonas putida; uracil

资金

  1. SETH Project of the Spanish Ministry of Science [RTI 2018-095584-B-C42]
  2. European Union [H2020-FET-OPEN-RIA-2017-1-766975, H2020-NMBP-BIO-CSA-2018, H2020-NMBP/0500, 870294]
  3. InGEMICS-CM Project of the Comunidad de Madrid (European Structural and Investment Funds) [S2017/BMD-3691]

向作者/读者索取更多资源

A variant of the soil bacterium Pseudomonas putida with a genome containing a similar to 20 % replacement of the whole of thymine (T) by uracil (U) was made by deleting genesung(uracil DNA glycosylase) and dut(deoxyuridine 5 '-triphosphate nucleotide hydrolase). Proteomic comparisons revealed that, of 281 up-regulated and 96 down-regulated proteins in the Delta ung Delta dut cells, as compared to the wild-type, many were involved in nucleotide metabolism. Unexpectedly, genome uracylation did not greatly change the gross environmental endurance profile of P. putida, increased spontaneous mutagenesis by only twofold and supported expression of heterologous proteins well. As U-enriched DNA is potentially degraded by the base excision repair of recipients encoding a uracil DNA glycosylase, we then tested the spread potential of genetic material originating in the Delta ung Delta dut cells either within the same species or in a commonly used Escherichia coli strain. Transformation and conjugation experiments revealed that horizontal gene transfer of U-containing plasmids fared worse than those made of standard DNA by two orders of magnitude. Although this figure does not guarantee the certainty of containment, it suggests a general strategy for curbing the dispersal of recombinant genetic constructs.

作者

我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。

评论

主要评分

4.4
评分不足

次要评分

新颖性
-
重要性
-
科学严谨性
-
评价这篇论文

推荐

暂无数据
暂无数据