Integration of large heterologous DNA fragments into the genome of Thermococcus kodakarensis
Integration of large heterologous DNA fragments into the genome of Thermococcus kodakarensis
复制标题
将大异源 DNA 片段整合到 Thermococcus kodakarensis 基因组中
DOI:
10.1007/s00792-020-01159-z
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发表时间:
2020
期刊:
影响因子:
2.9
通讯作者:
Atomi Haruyuki
中科院分区:
文献类型:
--
作者:
Sato Takaaki;Takada Daisuke;Itoh Takashi;Ohkuma Moriya;Atomi Haruyuki
In this study, a transformation system enabling large-scale gene recombination was developed for the hyperthermophilic archaeonThermococcus kodakarensis. Using the uracil auxotrophT. kodakarensisKU216 (∆pyrF) as a parent strain, we constructed multiple host strains harboring two 1-kbp DNA regions from the genomes of either the hyperthermophilic archaeonPyrococcus furiosusorMethanocaldococcus jannaschii. The two regions were selected so that the regions between them on the respective genomes would includepyrFgenes, which can potentially be used for selection. Transformation using these host strains and genomic DNA fromP. furiosusorM. jannaschiiwere carried out. Transformants with exogenouspyrFwere obtained only using host strains with regions fromP. furiosus, and only when the distances between the two regions were relatively short (2–5 kbp) on theP. furiosusgenome. To insert longer DNA fragments, we examined the possibilities of usingP. furiosuscells to provide intact genomic DNA. A cell pellet ofP. furiosuswas overlaid with that ofT. kodakarensisso that cells were in direct contact. As a result, we were able to isolateT. kodakarensisstrains harboring DNA fragments fromP. furiosuswith lengths of up to 75 kbp in a single transformation step.
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影响因子:
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作者:
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通讯作者:
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Westpheling, Janet
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通讯作者:
G. Sprott
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作者:
Fukui, T;Atomi, H;Imanaka, T
通讯作者:
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