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Revision as of 15:44, 11 October 2023
Propane 1 codes three of the ten enzymes necessary to produce propane in Escherichia coli.
Propane 1 includes 1)acyl-CoA thioester hydrolase (YciA) from Haemophilus influenzae, which catalyzes the reaction: acyl-CoA + H2O <-> CoA + a carboxylate, 2) Carboxylic acid reductase (CAR) from Mycobacterium marinum (strain ATCC BAA-535 / M), which catalyzes the reaction: a carboxylate + reduced acceptor <-> an aldehyde + acceptor + H2O, and 3) maturation factor phosphopantetheinyl transferase (sfp) from Bacillus subtilis, which activates CAR by catalyzing the transfer of a prosthetic phosphopanteine group to CAR.
![](https://static.igem.org/mediawiki/2015/7/7c/Aalto-Helsinki_plasmid_propane1_for_white_bckgr.png)
All coding regions are assembled as an operon after a T7 promoter and RBS's from common cloning vectors (such as pCDF-Duet1 by Novagen). Terminator sequence after the last coding sequence, CAR, is also derived from common cloning vectors (e.g. pCDF-Duet1 by Novagen uses this terminator).
All coding sequences have been codon optimized twice for E. coli. First with Thermo Fisher's codon optimizer and then with IDT's codon optimization software.
Propane 1 can be used as a part to produce propane in E. coli. The propane production pathway is shown below in figure 1, and the enzymes included in Propane 1 are highlighted in blue.
The plasmid has been assembled from IDT's gBlocks with NEBuilder assembly, similar to Gibson Assembly.
Validation: We restricted our Propane 1 and ran the insert on an agarose gel. From the picture we can tell that the insert's size is correct. The result can be seen in Figure 2.
Additionally, we did a colony PCR with VR and our primer P001. The VR primer attaches to our plasmid's backbone while P001 anneals with the very beginning of our construct. With this colony PCR we were able to show that the insert is present and it is indeed in the pSB1C3 backbone. See figure 3 for results, where the product in wells 1, and 5-10 is of the right size.
The colony which produced the product seen in figure 3, well 10 was sent to the registry.
Click here to download the full sequence of Propane 1 in pSB1C3 backbone.
![](https://static.igem.org/mediawiki/2015/8/81/Aalto-Helsinki_propane1_enzymes_highlighted.png)
![](https://static.igem.org/mediawiki/2015/3/3a/Aalto-Helsinki_car_submittedparts.png)
![](https://static.igem.org/mediawiki/2015/d/d1/Aalto-Helsinki_submittedparts_colony_pcr_validation.png)
Sequence and Features
- 10COMPATIBLE WITH RFC[10]
- 12INCOMPATIBLE WITH RFC[12]Unknown
- 21INCOMPATIBLE WITH RFC[21]Unknown
- 23COMPATIBLE WITH RFC[23]
- 25INCOMPATIBLE WITH RFC[25]Illegal NgoMIV site found at 1379
Illegal NgoMIV site found at 3608 - 1000COMPATIBLE WITH RFC[1000]
iGEM2023_NJTech-China-B Experiment
Group: NJTech-China-B 2023
Author: Qiming Zou
<img src="" width="80%" height="80%">