Difference between revisions of "Team:Austin UTexas/Improve"

 
(8 intermediate revisions by 3 users not shown)
Line 23: Line 23:
 
<br>
 
<br>
 
<br>
 
<br>
<h3>BBa_K2657005: sYFP2 with Mutational Hotspot Removed</h3>
+
<h3>BBa_K2657004: RCP Phytobrick with a Strong Promoter</h3>
<p>BBa_K2657005 is an improved version of the Biobrick BBa_K864100, which is the coding sequence for super yellow fluorescent protein (sYFP2). We increased the evolutionary stability of the sequence by removing a mutational hotspot. Originally, BBa_K864100 contained a palindromic sequence. Palindromes in the DNA cause potential hairpins, which prevent RNA polymerase from translating the DNA correctly. We then designed primers that added BsmBI and BsaI restriction sites to the sequence and inserted it into PhytoBrick universal acceptor, BBa_P10500, via BsmBI assembly. This created a Phytobrick that functions in Golden Gate Assembly reactions, which is useful due to its strong fluorescent character.</p>
+
<p>For this improved part, we modified BBa_E1010  and added the synthetic broad host range promoter, CP25, and an RBS sequence to our improved part. The broad host range promoter will be compatible with a higher number of bacterial strains. We also made the sequence functional in MoClo Assembly with BsaI by inserting the sequence into the PhytoBrick universal acceptor, a modified pSB1C3 backbone.</p>
 +
<br>
 +
<figure>
 +
<img class="center" src="https://static.igem.org/mediawiki/2018/c/ca/T--Austin_UTexas--KimRCPCP25_2.png">
 +
<figcaption><b>Figure 1.</b> The black circle encloses the successful transformation of the RCP phytobrick BBa_K2657004. The strong red color is clearly visible.</figcaption>
 +
</figure>
 
<br>
 
<br>
 
<br>
 
<br>
 
<h3>BBa_K2657003: RCP Phytobrick</h3>
 
<h3>BBa_K2657003: RCP Phytobrick</h3>
<p>In order to improve a part already in the Biobrick Registry, we chose BBa_E1010, which expresses the red chromoprotein. We then designed primers that added BsmBI and BsaI restriction sites to the sequence and inserted it into PhytoBrick universal acceptor BBa_P10500 via BsmBI assembly. This created a Phytobrick that functions in Golden Gate Assembly reactions.</p>
+
<p>In order to improve a part already in the Biobrick Registry, we chose BBa_E1010, which expresses the red chromoprotein. We then designed primers that added BsmBI and BsaI restriction sites to the sequence and inserted it into PhytoBrick universal acceptor BBa_P10500 via BsmBI assembly. This created a Phytobrick that functions in Golden Gate Assembly (GGA) reactions.</p>
 
<br>
 
<br>
 
<br>
 
<br>
<h3>BBa_K2657004: RCP Phytobrick with a Strong Promoter</h3>
+
<h3>BBa_K2657005: sYFP2 with Mutational Hotspot Removed</h3>
<p>For this improvement, we took BBa_E1010 (RCP) and added the synthetic, strong constitutive promoter CP25 which functions in a broad range of organisms. This will increase the expression of the RCP. We also made the sequence golden gate compatible by inserting the sequence into the PhytoBrick Universal Acceptor BBa_P10500. By linking a Promoter/RBS with a coding sequence, the transformation efficiency of Golden Gate Assembly reactions will increase since the number of parts in the assembly will be reduced. This will also allow BBa_E1010 to be a more useful selective marker since, in its current form, it only expresses weakly and requires one to two days to express at all.</p>
+
<p>BBa_K2657005 is an improved version of the Biobrick BBa_K864100, which is the coding sequence for super yellow fluorescent protein (sYFP2). We increased the evolutionary stability of the sequence by removing a mutational hotspot. Originally, BBa_K864100 had an IS10 insertion sequence site, which resulted in an insertion in the region of: 5’ -acaggcgtagtaccg- 3’. In BBa_K2657005 (the improved part), the IS10 sequence has been removed and the area of the insertion sequence is now 5’ -actggggttgttcca- 3’. This sequence maintains the codon identity of the original sequence.</p>
<br>
+
<br> 
 +
<p>We then designed primers that added BsmBI and BsaI restriction sites to the sequence and inserted it into PhytoBrick universal acceptor, BBa_P10500, via BsmBI assembly. This created a Phytobrick that functions in Golden Gate Assembly reactions, which is useful due to its strong fluorescent character.</p>
 
<figure>
 
<figure>
<img class="center" src="https://static.igem.org/mediawiki/2018/1/1f/T--Austin_UTexas--cp25plusRCP.PNG">
+
<img class="center" src="https://static.igem.org/mediawiki/2018/5/5c/T--Austin_UTexas--KimSYFP2.png">
<figcaption><b>Figure 3.</b> The white circle encloses the successful transformation.The strong red color is clearly visible.</figcaption>
+
<figcaption><b>Figure 2.</b> Colonies are non- fluorescent under blue light. White-circled colonies highlight what expected colonies look like with the PhytoBrick.</figcaption>
 
</figure>
 
</figure>
 +
  
  
  
 
</html>
 
</html>

Latest revision as of 02:44, 18 October 2018


Improve



BBa_K2657004: RCP Phytobrick with a Strong Promoter

For this improved part, we modified BBa_E1010 and added the synthetic broad host range promoter, CP25, and an RBS sequence to our improved part. The broad host range promoter will be compatible with a higher number of bacterial strains. We also made the sequence functional in MoClo Assembly with BsaI by inserting the sequence into the PhytoBrick universal acceptor, a modified pSB1C3 backbone.


Figure 1. The black circle encloses the successful transformation of the RCP phytobrick BBa_K2657004. The strong red color is clearly visible.


BBa_K2657003: RCP Phytobrick

In order to improve a part already in the Biobrick Registry, we chose BBa_E1010, which expresses the red chromoprotein. We then designed primers that added BsmBI and BsaI restriction sites to the sequence and inserted it into PhytoBrick universal acceptor BBa_P10500 via BsmBI assembly. This created a Phytobrick that functions in Golden Gate Assembly (GGA) reactions.



BBa_K2657005: sYFP2 with Mutational Hotspot Removed

BBa_K2657005 is an improved version of the Biobrick BBa_K864100, which is the coding sequence for super yellow fluorescent protein (sYFP2). We increased the evolutionary stability of the sequence by removing a mutational hotspot. Originally, BBa_K864100 had an IS10 insertion sequence site, which resulted in an insertion in the region of: 5’ -acaggcgtagtaccg- 3’. In BBa_K2657005 (the improved part), the IS10 sequence has been removed and the area of the insertion sequence is now 5’ -actggggttgttcca- 3’. This sequence maintains the codon identity of the original sequence.


We then designed primers that added BsmBI and BsaI restriction sites to the sequence and inserted it into PhytoBrick universal acceptor, BBa_P10500, via BsmBI assembly. This created a Phytobrick that functions in Golden Gate Assembly reactions, which is useful due to its strong fluorescent character.

Figure 2. Colonies are non- fluorescent under blue light. White-circled colonies highlight what expected colonies look like with the PhytoBrick.