Difference between revisions of "Part:BBa K3408000"

Revision as of 04:47, 22 October 2020

promoter nar(fnr regulated)

We add the promoter “P_nar”, in response to the RES-FNR oxygen regulator system of Bacillus Subtilis. It is activated by ResD which is phosphorylated by ResE when there is no oxygen. In our project, we use it to express Phy(ycD) efficiently in the absence of oxygen, and meanwhile express CI repressor protein to inhibit toehold switch-mzaF downstream.

According to the paper, they have designed three kinds of strength of the promoter P_nar and applied them in E.coli successfully. The expression level of GFP in the control of high-strength promoter was 19.7 higher than the wild-type promoter.

Fig.1. The spacer sequence of 15 bp between the -35 and -10 elements of the upstream region of the wild-type nar promoter was randomized(Hwang Hee Jin, et al., BIOTECHNOL BIOFUELS. 2018)

Sequence and Features

Assembly Compatibility:

10
COMPATIBLE WITH RFC[10]
12
COMPATIBLE WITH RFC[12]
21
COMPATIBLE WITH RFC[21]
23
COMPATIBLE WITH RFC[23]
25
COMPATIBLE WITH RFC[25]
1000
COMPATIBLE WITH RFC[1000]

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−	We add the promoter “P<sub>nar</sub>”, <b>in response to the RES-FNR oxygen regulator system</b> of <i>Bacillus Subtilis</i>, to express <b>Phy(ycD)</b> efficiently in the absence of oxygen, and meanwhile express <b>CI repressor protein</b> to inhibit toehold switch-mzaF downstream.	+	We add the promoter “P<sub>nar</sub>”, <b>in response to the RES-FNR oxygen regulator system</b> of <i>Bacillus Subtilis</i>. It is activated by ResD which is phosphorylated by ResE when there is no oxygen. In our project, we use it to express <b>Phy(ycD)</b> efficiently in the absence of oxygen, and meanwhile express <b>CI repressor protein</b> to inhibit toehold switch-mzaF downstream.

	According to the paper, they have designed three kinds of strength of the promoter P<sub>nar</sub> and applied them in <i>E.coli</i> successfully. The expression level of GFP in the control of high-strength promoter was 19.7 higher than the wild-type promoter.		According to the paper, they have designed three kinds of strength of the promoter P<sub>nar</sub> and applied them in <i>E.coli</i> successfully. The expression level of GFP in the control of high-strength promoter was 19.7 higher than the wild-type promoter.