Team:NRP-UEA-Norwich/Notebook
From 2014.igem.org
Lab Notebook
Week One
Monday
- Contacted by email UEA based organisations UEA:TV, Concrete and Livewire regarding possible exposure for our project.- Emailed Sam Fountain (UEA) regarding possible sources of funding and who to approach from the University of East Anglia.
Tuesday
- Started tweeting from the UEA iGEM Twitter account.- Created the UEA iGEM 2014 Facebook page.
- Emailed MustardTV regarding exposure for our project (local to Norwich).
Wednesday
- Created a poster design for the Oxford SynBio meet up held at Oxford University. - Poster printedThursday
- Attended Synthetic Biology 'Meet up' hosted by Oxford for iGEM teams across the country.Friday
- Submitted 'About our lab' form for iGEM before deadline.Week Two
Monday
- Completed The Sainsbury Laboratory (TSL) safety induction.- Collected synthesised samples from DNA 2.0 and transformed DNA into E.coli using electrocompetent cells and electroporation. Added 500 μl of Soc broth and incubated for 40 minutes at 37 °C. Spreadplated onto agar plates containing Kanamycin and incubated O/N at 37 °C.
Tuesday
- Selected a single colony from each of the eleven plates and the colonies were grown in TY broth with Kanamycin O/N.- Transformation of pSB1C3 plasmid containing RFP into E.coli using electroporation. Incubated with 50 μl of Soc broth at 37 °C for 1 hour.
- Spreadplated E.coli cells which have been transformed with the pSB1C3 + RFP plasmid.
- Completed calculations for Dig-Lig experiments (Size and conc. of DNA parts calculated,size of acceptor calculated, order of constructs for each reaction determined, dilution and DNA conc. for each reaction determined) Ratio of 2:1, constructs:acceptor (plasmid).
Wednesday
- Midi prep following the Qiagen protocol of the 9 constructs previously synthesised by DNA 2.0 and transformed on Day 2 and DNA conc. of each constrcut determined using the nanodrop. Dig-Lig calculation spread sheet completed using these concentrations.- Set up the first 11 Dig-Lig experiments, placed into PCR block on the slow protocol.
- Carbenicillin plates made and spreadplated with 40 μl of XGAL and 100 μl of IPTG. Plates left to dry upside down in 37°C incubator.
- Transformation of GG DNA into electrocompetent E.coli cells, PROTOCOL:
• Cells removed from -80°C freezer and allowed to thaw.
• A 5 µl sample of DNA was added to a 50 µl aliquot of cells.
• Transfered each 55 µl sample into a cuvette.
• Electroporation pulse on setting ECR1.
• A 500 µl of SOC broth was added to the cuvette.
• A 555 µl cuvette sample was transferred to an eppendorf tube and incubated for 40 min at 37°C.
• A 100 µl sample was spreadplated onto agar plates containing carbenicillin and incubated O/N at 37°C.
- A 20 µl PCR reaction was set up using a GG level 1 acceptor as template DNA containing the primers P1: 0349(PRO+5U) and 0353 (3U+TER) and P2: 0350 (PRO+5U) and 0354 (3U+TER).
- A TBE buffer 1% agarose gel was poured for diagnostic purposes to check the amplification of the PCR products.
- PCR product purification
• Pre-percipitation to remove TAQ polymerase and protein was completed followed by phenolchloroform extraction (x2). Aqueous layer is removed and discarded leaving DNA.
• Precipitation to remove buffer was carried out by adding Na acetate (10%) and ethanol causing the DNA to come out of solution. Aspirator was used to remove buffer, salt and ethanol.
• A salt wash was completed to remove the acetate and ethanol.
• Sample was incubated at 65°C for 2 min to evaporate the ethanol.
Thursday
- Checked Dig-Lig tranformation plates grown O/N and poor blue white selection observed with many blue colonies.- Selected 2 white colonies from each plated and colony PCR performed.
- Following colony PCR, amplified fragments ran on gel to determine size and therefore whether they contained the construct.
- Decided to repeat the 11 Dig-Lig experiments
- Ran digested PCR product from 25.06.2014 on a diagnostic 1% agarose gel in TBE buffer and determined that LacZ had internal restriction enzyme cut sites and product was split into two bands.
Friday
- Found poor blue/white selection on dig-ligs from 26.06.14. Suspected to be due to either the enzyme used or PCR block.- Set up a new set of dig-ligs to test the source of this problem.
Week Three
Monday
- Set up 10 Dig-Lig reactions with new BSA1 enzyme provided by TSL.- DNA was transformed into E.coli using electroporation method previously discussed.
- Transformed bacteria was spreadplated onto canamycin plates containing XGAL and IPTG and incubated O/N at 37°C.
- Mini-prep of DNA obtained from Week 2's successful Dig-Lig experiments according to Qiagen protocol. However, DNA eluted in 25 µl of eluting buffer rather than 50 µl as protocol suggests.
- DNA conc. of each sample quanitifed using the Nanodrop.
- DNA diluted to obtain 5 ng in each 5 µl sample.
- Sense and Antisense primers to each 5 µl DNA (+H20) to achieve 20 µl sample in total and sent for sequencing to verify construct sequence.
Tuesday
- Selection of 2 white colonies from 30.06.14 Dig-Lig transformed plates for a colony PCR reaction. The same 2 colonies were grown in 5 ml of SOC broth O/N at 37°C.- Poured a 1% agarose gel using TBE buffer with a 1:20,000 dilution of ethidium bromide.
- Gel run with Dig-Lig PCR products.
Wednesday
- Transformed 5 constructs into Argobacterium tumefacians- Mini prep of 5 constructs from colonies picked 1.7.14
- Electroporated to transform into agro
- Incubated at 28 °C for 1 hour
- Spread plated transformed agro
Thursday
- Set up a 20 µl PCR reaction using primers synthesized from Sigma and a level 1 acceptor as the template DNA• Pro + 5UTR
• CDS
• Ter + 3UTR
- Ran PCR product on a gel to check amplification
- PCR product purification using phenol chloroform
Friday
- Digest of PCR samples from 3.7.14- Gel purification and quantification of digested fragments (now ready to ligate into PSB1C3 backbone)
- Digest of PSB1C3 plasmid with EcoR1 and PST1 (removes blunt ends)
- Dephosphorylation of plasmid backbone
- Colony PCR of colonies picked from agro plates (transformed 10.7.14)
Week Four
Monday
- Colonies picked from agrobacterium plates from 2.7.14- Overnight culture in 5 ml of broth containing Carbenicillin, Gentamicin, Rifampicin
Tuesday
- No wet lab work completed- Team meeting to discuss human practices events we would like to organise
Wednesday
- Safety induction in UEA labs for all team members- Human Practices meeting. Ideas included: Food security event, surveys, School events and possible speed debate.
Thursday
- Agrobacterium-mediated transient expression in leaves of N. benthamiana PROTOCOL:1. Single colony of each constructs 2,3,4,10,11 grown overnight at 28 °C in 5 ml media containing chloramphenicol.
2. Pellet by centrifugation at 4000 rpm for 15 min.
3. Resuspend in 10 mM MES, 10 mM MgCl2 and 150 μM Acetosyringone.
4. 1:100 dilution to give a final OD of 0.1-0.5
5. Incubate at RT for 4 hours.
6. Create a small puncture using a needle on the underside of N. benthamiana leaves of plants 6-8 weeks old. Using a blunt syringe infiltrate the agro constructs into the leaf puncture. Each construct is infiltrated into 4 sections on one leaf. 2 constructs per plant.
7. Store plants in controlled environment at 19-23 °C for 3 days.
-Ligation reaction to join PSB1C3 and GG compatible ends.
Friday
- Analysis of infiltrations using light microscope and UV light.- Colonies picked from ligation on 10.7.14 (GG compatible PSB1C3 for accepting Pro, CDS, Ter level 0 parts) and grown in 5 ml of LB broth, incubated in shaker O/N at 37 °C
- Attended the UEA BIO Research Colloquium from 9am - 3.30pm
Week Five
Monday
- Mini prep of Mo Flipper Modules DNA- Quantification of DNA (Nanodrop)
PRO 1 - 78.5 ng/µl
PRO 2 - 93.5 ng/µl
PRO 3 - 73.8 ng/µl
CDS 1 - 77.7 ng/µl
CDS 2 - 71.1 ng/µl
CDS 3 - 66.8 ng/µl
TER 1 - 91.8 ng/µl
TER 2 - 89.2 ng/µl
TER 3 - 89.2 ng/µl
Tuesday
- Visited The CUT venue in Halesworth in preparation for the Food for Thought organised event on the 26th July.Wednesday
- Meeting with Dr Anna Smajdor, a bio-ethicist, to discuss ethical implications of our project.- Discussed the need for ethical approval for data collection for possible ideas such as surveys.
Thursday
- Team meeting to discuss how lab work is progressing and who/when the further lab work will be carried out.Friday
- Preparation of media required: LB, LB agar, LB + Chloramphenicol plates and LB + Kanamycin plates.Week Six
Monday
- 2 single colonies picked from agro plates grown 02/07/2014.- Colonies added to 5 ml of broth containing Carbenicillin, Gentamicin and Rifampicin
Tuesday
- Transformation of synthesised DNA from DNA 2.0 into E.coli. Tubes 1 to 7.1. AtPR1
2. ArvBS3
3. NbBi1-RNA
4. NbProB-RN
5. AvrXa27 T
6. OsXa27 Pro
7. Control (No DNA)
- Followed heat shock protocol:
- 5 µl DNA added to 50 µl of chemically competent E.coli
- Spreadplated onto agar plates containing KAN
- Incubated O/N at 37°C
Wednesday
- Met with Dr Kay Yeoman, BIO outreach officer (UEA) to discuss activities for school outreach events.- Discussed activities for 'Food for Thought' event at the cut on 26/07 including visual representations of crop losses in cylinders.
Thursday
- DNA preparation of Nevada 2010 biobricks in preparation for characterisation.- O/N culture of single colonies of level 0 constructs (currently in E.coli)