IGEM 2010 Project

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We need to start capturing what we are doing, and why.

Please use this page as a starting place.

We need an overall description of our project at the overview level as well as the subsections and phases of implementation.

Math Sub-Projects

Counting Permutations


Improving Oligo Assembler We adapted the lancelator (http://gcat.davidson.edu/IGEM06/oligo.html), a program created by Lance Harden as a part of the 2006 iGem team, so that it would execute faster and can handle longer sequences. The old program could only handle sequences of 300 bp or shorter. Also, the more oligos the program broke the sequence into, the longer it took to run, and for 8 or more the run time was simply unreasonable. However, for the sequences it could handle it always finds the optimal oligos to use. Our program allows the user to enter a sequence of any length, and the length does not significantly effect runtime. In addition, we added extra features such as checking for and removing BioBrick restriction sites and adding BioBrick primers. While our program does not always find the optimal oligos, it still does very well which is an acceptable compromise because the runtime is improved so dramatically.

http://gcat.davidson.edu/iGem10/index.html

Biology Sub-Projects

Codon Optimization


Segment Number of Base Pairs Wild Type Sequence Optimized Sequence Deoptimized Sequence
1 141 Atgaaatctaacaatgcgctcatcgtcatcctcggcaccgtcaccctggatgctgtaggcataggcttggttatgccggtactgccgggcctcttgcgggatatcgtccattccgacagcatcgccagtcactatggcgtg ATGAAATCTAACAACGCGCTGATCGTTATCCTGGGTACCGTTACCCTGGACGCGGTTGGTATCGGTCTGGTTATGCCGGTTCTGCCGGGTCTGCTGCGTGACATCGTTCACTCTGACTCTATCGCGTCTCACTACGGTGTT ATGAAGAGTAATAATGCCCTAATAGTCATACTAGGAACAGTCACACTAGATGCCGTCGGAATAGGACTCGTCATGCCCGTCCTACCCGGACTACTAAGGGATATAGTCCATAGTGATAGTATAGCCAGTCATTATGGAGTC
2 138 ctatatgcgttgatgcaatttctatgcgcacccgttctcggagcactgtccgaccgctttggccgccgcccagtcctgctcgcttcgctacttggagccactatcgactacgcgatcatggcgaccacacccgtcctg CTGTACGCGCTGATGCAGTTCCTGTGCGCGCCGGTTCTGGGTGCGCTGTCTGACCGTTTCGGTCGTCGTCCGGTTCTGCTGGCGTCTCTGCTGGGTGCGACCATCGACTACGCGATCATGGCGACCACCCCGGTTCTG CTATATGCCCTAATGCAATTTCTATGTGCCCCCGTCCTAGGAGCCCTAAGTGATAGGTTTGGAAGGAGGCCCGTCCTACTAGCCAGTCTACTAGGAGCCACAATAGATTATGCCATAATGGCCACAACACCCGTCCTA
3 177 tacgccggacgcatcgtggccggcatcaccggcgccacaggtgcggttgctggcgcctatatcgccgacatcaccgatggggaagatcgggctcgccacttcgggctcatgagcgcttgtttcggcgtgggtatggtggcaggccccgtggccgggggactgttgggcgccatctcc TACGCGGGTCGTATCGTTGCGGGTATCACCGGTGCGACCGGTGCGGTTGCGGGTGCGTACATCGCGGACATCACCGACGGTGAAGACCGTGCGCGTCACTTCGGTCTGATGTCTGCGTGCTTCGGTGTTGGTATGGTTGCGGGTCCGGTTGCGGGTGGTCTGCTGGGTGCGATCTCT TATGCCGGAAGGATAGTCGCCGGAATAACAGGAGCCACAGGAGCCGTCGCCGGAGCCTATATAGCCGATATAACAGATGGAGAGGATAGGGCCAGGCATTTTGGACTAATGAGTGCCTGTTTTGGAGTCGGAATGGTCGCCGGACCCGTCGCCGGAGGACTACTAGGAGCCATAAGT
4 81 ccattccttgcggcggcggtgctcaacggcctcaacctactactgggctgcttcctaatgcaggagtcgcataagggagag CCGTTCCTGGCGGCGGCGGTTCTGAACGGTCTGAACCTGCTGCTGGGTTGCTTCCTGATGCAGGAATCTCACAAAGGTGAA CCCTTTCTAGCCGCCGCCGTCCTAAATGGACTAAATCTACTACTAGGATGTTTTCTAATGCAAGAGAGTCATAAGGGAGAG

Note: All above segments have been optimized and deoptimized using the online Optimizer program.

To create the optimized and deoptimized segments of the Tet A gene we used the sequence that the Optimizer program gave us and put it into the Lancelator a program created by Lance Harden as part of the 2006 iGEM team. After getting the recommended Oligo sequences from the Lancelator, we added necessary "sticky ends" that were compatible with the naturally occurring restriction enzyme sites that we discovered (see Restriction Enzymes below). At this time we have ordered Oligo parts for segments 1 and 2 of the Tet A gene. The Oligos that were ordered can be seen below.


Segment 1 Oligos


Optimized

top 1 5' AATTCGCGGCCGCTTCTAGATGAAATCTAACAACGCGCTGATCGTTATCCTGGGTACCG 3’

top 2 5' TTACCCTGGACGCGGTTGGTATCGGTCTGGTTATGCCGGTTCTGCCGGGTCTGCTGCGTGAC 3’

top 3 5' ATCGTTCACTCTGACTCTATCGCGTCTCACTACGGTGTTCTG 3’

bottom 2 5' CATAACCAGACCGATACCAACCGCGTCCAGGGTAACGGTAC CCAGGATAACGATCAGCGCGTTGTTAGATTTCATCTAGAAGCGGCCGCG 3’

bottom 1 5' CTAGCAGAACACCGTAGTGAGACGCGATAGAGTCAGAGTGAACGATGTCACGCAGCAGACCCGGCAGAACCGG 3’

Deoptimized

top 1 5' AATTCGCGGCCGCTTCTAGATGAAGAGTAATAATGCCCTAATAGTCATACTAGGAACAG 3’

top 2 5' TCACACTAGATGCCGTCGGAATAGGACTCGTCATGCCCGTCCTACCCGGACTACTAAGGGA 3’

top 3 5' TATAGTCCATAGTGATAGTATAGCCAGTCATTATGGAGTCCTG 3’

bottom 2 5' GAGTCCTATTCCGACGGCATCTAGTGTGACTGTTCCTAGTATG ACTATTAGGGCATTATTACTCTTCATCTAGAAGCGGCCGCG 3’

bottom 1 5' CTAGCAGGACTCCATAATGACTGGCTATACTATCACTATGGACTATATCCCTTAGTAGTCCGGGTAGGACGGGCATGAC 3’


Segment 2 Oligos


Optimized

top 1 5' CTAGCCTGTACGCGCTGATGCAGTTCCTGTGCGCGCCGGTTCTGGGTGCGCTGTCTGAC 3’

top 2 5' CGTTTCGGTCGTCGTCCGGTTCTGCTGGCGTCTCTGCTGGGTGCGACCATCGACTAC 3’

top 3 5' GCGATCATGGCGACCACCCCGGTTCTGTG 3’

bottom 1 5' GCGCACAGGAACTGCATCAGCGCGTACAGG 3’

bottom 2 5' CCAGCAGAACCGGACGACGACCGAAACGGTCAGACAGCGCACCCAGAACCGGC 3’

bottom 3 5' GATCCACAGAACCGGGGTGGTCGCCATGATCGCGTAGTCGATGGTCGCACCCAGCAGAGACG 3’

Deoptimized

top 1 5' CTAGCGCTATATGCCCTAATGCAATTTCTATGTGCCCCCGTCCTAGGAGCCCTAAGTG
3'

top 2 5' ATAGGTTTGGAAGGAGGCCCGTCCTACTAGCCAGTCTACTAGGAGCCACAATAGAT
3'

top 3 5' TATGCCATAATGGCCACAACACCCGTCCTATG
3'

bottom 1 5' GGCACATAGAAATTGCATTAGGGCATATAGCG 3'


bottom 2 5' TAGGACGGGCCTCCTTCCAAACCTATCACTTAGGGCTCCTAGGACGGG 3'


bottom 3 5' GATCCATAGGACGGGTGTTGTGGCCATTATGGCATAATCTATTGTGGCTCCTAGTAGACTGGCTAG 3'

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Restriction Enzymes

To insert the annealed Oligo segments that were created we had to digest the Tet A gene using naturally occurring enzyme restriction sites that did not exist in the rest of the gene or in the plasmid (pSBIA2).


Segment First Restriction Enzyme Second Restriction Enzyme
1 EcoRI NheI
2 NheI BamHI
3 BamHI SphI
4 SphI SalI

Parts Used (to be used)

Part Registry Link Construct Including Part
Tet A (tetracycline resistance gene) J31007 Tet A (forward) promoter-RBS-RFP-RBS-TetA on pSBIA2
pLac-RBS-RFP I715039 pLac-RBS-RFP Possibly: pLac-RBS-RFP-RBS-TetA on pSBIA2
pLac-RBS-RFP-RBS-TetA-TT on pSBIAK3 S04435 pLac-RBS-RFP-RBS-TetA-TT Possibly: pLac-RBS-RFP-RBS-TetA-TT on pSBIA2
Part Name and Registry Number Registry Link Construct
Part Name and Registry Number Registry Link Construct


Tet-trations



Making and Testing lox_ Sites

Green Part has been cloned and sequence verified; Red Part is under construction

Final Construct Current Status Registry Number and Link Primary Team Member
lox5171 Forward in pSB1A2 I got colonies on my second attempt. Once I isolate the plasmid, it will be sent off for sequencing. pSB1A2
lox5171 does not exist in the registry. We ordered oligos and constructed the site in the lab.
Nitya
lox5171 Reverse in pSB1A2 This plasmid will also be sent off for sequencing soon. pSB1A2
lox5171 does not exist in the registry. We ordered oligos and constructed the site in the lab.
Nitya
loxm2 Forward in pSB1A2 I ligated loxm2 F with the plasmid and have prepared the DNA for sequencing to confirm what is there. [1]
loxm2 does not exist in the registry. We ordered oligos and constructed the site in the lab.
Tom
loxm2 Reverse in pSB1A2 I ligated loxm2 F with the plasmid and have prepared the DNA for sequencing to confirm what is there. [2]
loxm2 does not exist in the registry. We ordered oligos and constructed the site in the lab.
Tom
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Testing Cre Activity

Green Part has been cloned and sequence verified; Red Part is under construction

Final Construct Current Status Registry Number and Link Primary Team Member
I718008 (pBAD+RBS+cre) in pSB4K5 At this point, I have isolated both the insert and the plasmid, but my two attempts at ligation have not produced any colonies. I718008 pSB4K5
Nitya
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pSBIA7 & pSBIA2

Data showing the varying levels of expression between pSBIA7 and pSBIA2

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