pCO117
pCO040
BBa_J23101
pCO082
BBa_B0010
pCO121
pCO028
pCO120
pCO118
pCO093
BBa_I13453
pCO119
pICH41295 (AquI-1)
BBa_K5149004
Short Description: AquI: Desired homologous region to the genome for CbAgo
Long Description: The AquI Locus is a 1200bp gene that is a putative type II restriction endonuclease that has been hypothesized to be a neutral site in
PCC 11901. In addition, the removal of type II restriction endonucleases has shown to increase transformation efficiency so we decided to use the region as a Neutral Site.
The 1-400 bp region of AquI Locus is implemented into our plasmids to help provide the Argonaute protein with DNA guides. In theory, CbAgo and RecBCD will break and digest
this region into 16-18bp chunks and CbAgo will acquire the chunks and form full complexes. Thus the CbAgo complex will find the AquI Locus in the UTEX3154 genome and produce
breaks in the DNA sequence. To use this 400bp region, you just need to include it into a plasmid which the Argonaute system will recognize as exogenous DNA and break it to
take as guides.
Source of Part: We used Q5 PCR with primers that flanked the AquI-1 Locus to amplify the region out of the genome of our strain Synechoccus sp. UTEX3154.
Design Considerations: We decided to split the 1200bp AquI Locus into three parts to give flexibility in our experiments. We intend to implement Chi Sites between
each 400bp region to promote DNA guide acquisition. To assemble the AquI-1 Locus correctly into our plasmids, we used Modular Cloning (MoClo). MoClo is a type II restriction
enzyme system utilizing Bbs1 and Bsa1. To make the sequence MoClo compatible we added the correct restriction enzyme site and 4 base pair overhang on flags to the primers we
used to PCR amplify the region out of the genome.
pICH41331 (AquI-2)
BBa_K5149005
Short Description: Desired homologous region to the genome for CbAgo to cut
Long Description: The AquI Locus is a 1200bp gene that is a putative type II restriction endonuclease that has been hypothesized to be a neutral site in PCC 11901. In addition, the removal of type II restriction endonucleases has shown to increase transformation efficiency so we decided to use the region as a Neutral Site. The 401-800 bp region of AquI Locus is implemented into our plasmids to help provide the Argonaute protein with DNA guides. In theory, CbAgo and RecBCD will break and digest this region into 16-18bp chunks and CbAgo will acquire the chunks and form full complexes. Thus the CbAgo complex will find the AquI Locus in the UTEX3154 genome and produce breaks in the DNA sequence. To use this 400bp regio, you just need to include it into a plasmid which the Argonaute system will recognize as exogenous DNA and break it to take as guides.
Source of Part: We used Q5 PCR with primers that flanked the AquI-2 Locus to amplify the region out of the genome of our strain Synechoccus sp. UTEX3154.
Design Considerations: We decided to split the 1200bp AquI Locus into three parts to give flexibility in our experiments. We intend to implement Chi Sites between each 400bp region to promote DNA guide acquisition. To assemble the AquI-2 Locus correctly into our plasmids, we used Modular Cloning (MoClo). MoClo is a type II restriction enzyme system utilizing Bbs1 and Bsa1. To make the sequence MoClo compatible we added the correct restriction enzyme site and 4 base pair overhang on flags to the primers we used to PCR amplify the region out of the genome.
pICH41276 (AquI-3)
BBa_K5149006
Short Description: Desired homologous region to the genome for CbAgo to cut
Long Description: The AquI Locus is a 1200bp gene that is a putative type II restriction endonuclease that has been hypothesized to be a neutral site in PCC 11901. In addition, the removal of type II restriction endonucleases has shown to increase transformation efficiency so we decided to use the region as a Neutral Site. The 801-1200 bp region of AquI Locus is implemented into our plasmids to help provide the Argonaute protein with DNA guides. In theory, CbAgo and RecBCD will break and digest this region into 16-18bp chunks and CbAgo will acquire the chunks and form full complexes. Thus the CbAgo complex will find the AquI Locus in the UTEX3154 genome and produce breaks in the DNA sequence. To use this 400bp region, you just need to include it into a plasmid which the Argonaute system will recognize as exogenous DNA and break it to take as guides.
Source of Part: We used Q5 PCR with primers that flanked the AquI-3 Locus to amplify the region out of the genome of our strain Synechoccus sp. UTEX3154.
Design Considerations: We decided to split the 1200bp AquI Locus into three parts to give flexibility in our experiments. We intend to implement Chi Sites between each 400bp region to promote DNA guide acquisition. To assemble the AquI-3 Locus correctly into our plasmids, we used Modular Cloning (MoClo). MoClo is a type II restriction enzyme system utilizing Bbs1 and Bsa1. To make the sequence MoClo compatible we added the correct restriction enzyme site and 4 base pair overhang on flags to the primers we used to PCR amplify the region out of the genome.
pICH41295
BBa_K5149001
Short Description: Region Flanking AquI for Homologous Recombination
Long Description: The Up Homology Arm is a 1200bp region homologous to the flank of one side of the AquI region.
To use the Up Homology Arm to AquI Locus, you need to pair it with the Down Homology Arm to AquI Locus. Additionally, you need to include some gene in
between the Arms, for example, GFP. The construct will look like this: Up Homology Arm - GFP - Down Homology Arm. This provides your organism with a template
for homologous recombination. When a double-stranded DNA break occurs within the AquI locus, the template will be used for homologous recombination, allowing GFP to
be inserted into the genome. This is how we used the Up Homology Arm in our project.
Source of Part: We used Q5 PCR with primers that flanked the Up Homology Arm region to amplify the region out of the genome of our strain Synechoccus sp. UTEX3154.
Design Considerations: To assemble Up Homology Arm to AquI Locus correctly into our plasmids, we used Modular Cloning (MoClo), a type II restriction enzyme system utilizing Bbs1 and Bsa1. To make the sequence MoClo compatible, we added the correct restriction enzyme site and 4 base pair overhang on flags to the primers we used to PCR amplify the region out of the genome.
pICH41276
BBa_K5149002
Short Description: Region Flanking AquI for Homologous Recombination
Long Description: The Down Homology Arm is a 1200bp region homologous to the flank of one side of the AquI region. To use the Down
Homology Arm to AquI Locus, you need to pair it with the Up Homology Arm to AquI Locus. Additionally, you need to include some gene in between the Arms,
for example, GFP. The construct will look like this: Up Homology Arm - GFP - Down Homology Arm. This provides your organism with a template for homologous
recombination. When a double-stranded DNA break occurs within the AquI locus, the template will be used for homologous recombination,
allowing GFP to be inserted into the genome. This is how we used the Down Homology Arm in our project.
Source of Part: We used Q5 PCR with primers that flanked the Down Homology Arm region to amplify the region out of the genome of our strain Synechoccus sp. UTEX3154.
Design Considerations: To assemble the Down Homology Arm to AquI Locus correctly into our plasmids, we used Modular Cloning (MoClo), a type II restriction enzyme system utilizing Bbs1 and Bsa1. To make the sequence MoClo compatible, we added the correct restriction enzyme site and 4 base pair overhang on flags to the primers we used to PCR amplify the region out of the genome.
pICH41308 (with GFP)
pICH41308 (with CbAgo)
BBa_K5149000
Short Description: Clostridium butyricum Argonaute protein
Long Description: CbAgo is a part of the Argonaute protein family,
known for gene silencing and protection against exogenous DNA/RNA. In our project, we use CbAgo as a method for genome manipulation. By providing a plasmid with regions
homologous to the target genome and CbAgo, DNA guides are produced by CbAgo and taken in to form full complexes. These complexes then cut every part of the genome where
the DNA guide binds. CbAgo is a mesophile, functioning between 20-45 degrees Celsius, compared to most thermophile Argonaute proteins.
Source of Part: CbAgo comes from the organism Clostridium butyricum. We ordered the sequence through Integrated DNA Technologies (IDT).
Design Considerations: To assemble CbAgo correctly into our plasmids, we used Modular Cloning (MoClo), a type II restriction enzyme system utilizing Bbs1 and Bsa1. To make the sequence MoClo compatible, we added the correct restriction enzyme site and 4 base pair overhang. Additionally, we codon-optimized CbAgo to Synechoccocus sp. UTEX3154 and removed restriction modification sites by introducing point mutations in the sequence.
pICH41308 (with Chi Site)
BBa_K5149003
Short Description: RecBCD recognition site to stop digesting dsDNA
Long Description: Chi Sites are repeated DNA sequences that act as stopping recognition sites for RecBCD complexes. In our project, Chi Sites
regulate the complete digestion of the dsDNA region we are attempting to edit. By implementing Chi Sites between each of the 400bp regions of AquI Locus, we can
test the efficiency of CbAgo taking in a DNA Guide to form a full complex. The speed at which the AquI Locus is cut will determine whether CbAgo depends on Chi
Sites for more efficient guide acquisition. DNA acquisition for CbAgo is only possible with RecBCD or a RecBCD-like system.
Source of Part: We ordered two primers of linear DNA through Integrated DNA Technologies (IDT): one forward strand and one reverse strand.
To create the part, we put them through a thermocycler at 94 degrees Celsius and allowed the thermocycler to cool down to room temperature, ensuring the annealing
of the two linear fragments.
Design Considerations: To assemble the Chi Site correctly into our plasmids, we used Modular Cloning (MoClo),
a type II restriction enzyme system utilizing Bbs1 and Bsa1. To make the sequence MoClo compatible, we added the correct restriction
enzyme site and 4 base pair overhang on the IDT-ordered primers.