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From 2014.igem.org

Contents 1 Monday 4th August 1.1 Lab Work 1.1.1 A - The chassis coli Odor free 1.1.1.1 Striate on Dishes 1.1.2 C - Salicylate Inducible Suppressing System 1.1.2.1 Plasmid DNA Purification 1.1.2.2 Digestion to check 1.1.2.3 Electrophoresis 1.1.2.4 Final Stock 1.1.3 D - Lemon scent 1.1.3.1 Gel electrophoresis of BBa_K762100 1.1.3.2 Electroporation 1.1.3.3 Polymerase chain reaction 1.2 Miscellaneous 1.2.1 Ethics 1.2.2 Bibliography

Monday 4th August

Lab Work

A - The chassis coli Odor free

Striate on Dishes

by Juliette & Romain

We striated MG1655 and MG1655Z1 on LB and Kan dishes, from the striates prepared on LB dishes 1st August

C - Salicylate Inducible Suppressing System

Plasmid DNA Purification

by Eugene and Fabio

• Ligation of BBa_J61051 and BBa_K228001 made the 30th July

From Liquid Culture made the 1st August

Digestion to check

by Eugene and Fabio

In order to validate the hole Assembly Process, we did a final digestion. The samples were digested with the enzymes EcoRI and PstI, that separates the BioBrick Assembly core from theirs vectors. The graphic result of this process is shown in the next step.

Protocol:

1. Add 5 μl of the plasmid to digest.
2. Add 2 μl of buffer (Fast Digest Buffer 10x).
3. Add 0,2 μl of enzyme EcoRI.
4. Add 0,2 μl of enzyme PstI.
5. Complete with 12,6μl of H₂O.
6. Mix gently.
7. Incubate at 37°C for one hour.

Electrophoresis

In progress

Final Stock

In progress

D - Lemon scent

Gel electrophoresis of BBa_K762100

by Sean

Samples used were prepared on the 30th July.

Results

From left to right: 5 µl of BBa_K762100 + "old" Phusion enzyme, 5 µl of BBa_K762100 + "new" Phusion enzyme

Electroporation

by Terry

Strain used: DY330 containing plasmid pJBEI6409.

We had to switch the Limonen Synthase cassette with the Apramycin resistance.

The culture has been placed at 42°C for 17 min then cooled 10 min before centrifugation.

Polymerase chain reaction

by Sean & Pierre

BBa_K517003

component	volume
H2O	35.5μl
Phusion buffer 5X	10μl
dNTPs	2μl
iPS68bis	1μl
iPS69	1μl
DNA	1μl
Phusion enzyme	0.5μl

BBa_K762100

For this BioBrick two tubes were prepared: one with undiluted DNA and one with DNA diluted 10^-1.

component	volume
H2O	35.5μl
Phusion buffer 5X	10μl
dNTPs	2μl
iPS66	1μl
iPS67	1μl
DNA	1μl
Phusion enzyme	0.5μl

Tubes were placed in PCR machine with the following parameters.

Cycle step	Temperature	Time	Cycle
Initial denaturation	98°C	1 min	1
Denaturation	98°C	15 s	25 - 30
Annealing	52°C	25 s	25 - 30
Extension	72°C	45 s	25-30
Final extension	72°C	10 min	1
Final extension	8°C	hold	1

Gel electrophoresis of BBa_K517003 and K762100 previously prepared.

by Sean&Pierre

Results

failure.

From left to right: 10 µl ladder, 5 µl of BBa_K762100 non diluted, 5 µl of BBa_K762100 diluted 10^-1, 5 µl of BBa_K517003.

Miscellaneous

By Hoang Vu

Ethics

Well, I just got back from one month of vacation and when I came, everybody was already on lab works. So, I decided to work on ethics first. Synthetic Biology and BioArt are controversial because one is about engineering living organisms, and therefore raises economic, religious, political, moral problems; and the other is about engineering the living organisms too but it's mostly USING the living organisms to do art, to carry a message. This is how I see the essential points of our project ethical problems. But my point of view is not fixed. Maybe I'm wrong, maybe there is something that I have missed. That's why I started with a research on GMOs in general to better understand those issues. - The first trangenic pet were GloFish, "TK-1" 2003 in Taiwan - California is completely against such animals but the funny thing is that California is one of the best supporters of agricultural GMOs. So, there is the question: Why the plants and not the fish? Probably economic benefits and ethical positions are the reasons. Then, is there a hierachy of living organisms? Why? - GMOs under commercial cover raise new problems on environment and commercial rights. - Take a look at the arguments between Anti-GMO and Pro-GMO movements. The 90's context for example in Europe after food crises like the mad cow disease, contribute to the incomplete acceptance by the Europeans.

Bibliography

I worked on ethics till one of our advisors ask me: "Can you do a research on the chemical components of the lemon odor please? I need more publications on chemical characterization of limonene, citral A and B, and beta-Pinene"

Members there:

• Instructors and advisors: Alice, Solenne and Sylvie.
• Students: Eugene, Fabio, Hoang Vu, Juliette, Pierre, Romain, Sean and Terry.

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