Difference between revisions of "Part:BBa K2970002"
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<partinfo>BBa_K2970002 short</partinfo> | <partinfo>BBa_K2970002 short</partinfo> | ||
− | This gate is a toehold switch system with which a gene of interest can be locked and regulated on a translational level using mRNA as regulator. After transcription, the mRNA of this gate forms a hairpin that hides the ribosome binding site and start codon of the gene of interest, thus translation can not | + | This gate is a toehold switch system with which a gene of interest can be locked and regulated on a translational level using mRNA as regulator. After transcription, the mRNA of this gate forms a hairpin structure that hides the ribosome binding site and start codon of the gene of interest, thus translation can not be initiated (Figure 1B). A complementary part to the gate, a so called trigger, is needed to open the hairpin and release the ribosome binding site. In our case two triggers are needed that form a trigger complex to open the gate (<partinfo>BBa_K2970000</partinfo> and <partinfo>BBa_K2970001</partinfo>). The affinity between the trigger complex and the gate is greater than that of the gate to itself (in the hairpin). A single trigger cannot open the gate because it has only half the required complementary sequence. |
− | + | <html> | |
+ | <figure> | ||
+ | <img width="100%" src="https://2019.igem.org/wiki/images/b/bc/T--Hamburg--PartsFigure11.jpeg"> | ||
+ | <figcaption> | ||
+ | <b>Figure 1: </b>A) Formation of trigger complex after translation. B) mRNA of gate sequence forms secondary structures that hide the ribosome binding site and the start codon. | ||
+ | </figcaption> | ||
+ | </figure> | ||
+ | </html> | ||
+ | <html> | ||
+ | <figure> | ||
+ | <img width="90%" src="https://2019.igem.org/wiki/images/4/49/T--Hamburg--Part_Figure6.jpg"> | ||
+ | <figcaption> | ||
+ | <b>Figure 2: </b>Opening of the gate due to annealing of trigger complex to gate. | ||
+ | </figcaption> | ||
+ | </figure> | ||
+ | </html> | ||
To transform this part into bacteria it should be put on a plasmid together with a promoter and a terminator. We used this part to regulate a chloramphenicol resistance gene that we put behind the gate (<partinfo>BBa_K2970006</partinfo>). | To transform this part into bacteria it should be put on a plasmid together with a promoter and a terminator. We used this part to regulate a chloramphenicol resistance gene that we put behind the gate (<partinfo>BBa_K2970006</partinfo>). | ||
+ | ===Results=== | ||
+ | |||
+ | For results visit page of <partinfo>BBa_K2980006</partinfo>. <br> | ||
<!-- Add more about the biology of this part here | <!-- Add more about the biology of this part here |
Latest revision as of 01:37, 22 October 2019
Gate
This gate is a toehold switch system with which a gene of interest can be locked and regulated on a translational level using mRNA as regulator. After transcription, the mRNA of this gate forms a hairpin structure that hides the ribosome binding site and start codon of the gene of interest, thus translation can not be initiated (Figure 1B). A complementary part to the gate, a so called trigger, is needed to open the hairpin and release the ribosome binding site. In our case two triggers are needed that form a trigger complex to open the gate (BBa_K2970000 and BBa_K2970001). The affinity between the trigger complex and the gate is greater than that of the gate to itself (in the hairpin). A single trigger cannot open the gate because it has only half the required complementary sequence. To transform this part into bacteria it should be put on a plasmid together with a promoter and a terminator. We used this part to regulate a chloramphenicol resistance gene that we put behind the gate (BBa_K2970006).
Results
For results visit page of BBa_K2980006.
Sequence and Features
- 10COMPATIBLE WITH RFC[10]
- 12COMPATIBLE WITH RFC[12]
- 21COMPATIBLE WITH RFC[21]
- 23COMPATIBLE WITH RFC[23]
- 25COMPATIBLE WITH RFC[25]
- 1000COMPATIBLE WITH RFC[1000]