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Starting from the top, we are assembling the first two fragments (K14070 and K14064) and K147002 with our oligos to add in a Dif site. Two dif sites on either side of resistance cassettes can be used to later excise antibiotic resistance from our final constructs.
A : K143070 and K11064 assembly step
- K14070 and K14064 fragments
- DNA was taken out of the reigstry
- Cut with restriction enzymes
- Run on a gel to confirm correct cutting
and estimate relative ratios of DNA for ligation
- Ligated overnight
- Transformed into E.Coli to Amplify the DNA
- Colony PCR has been used to confirm the correct insert size.
- Extract the DNA with a miniprep
- Proceed to the next step - Reverse PCR
B : K14002 and oligo assembly
- Ligated two single stranded oligos together to produce Dif and insertion site
- Standard biobrick assembly of oligos to K14002
- Ligation and transformation into E.coli competent cells (strain)
- Screen plated colonies for correct insertion
- Purify the correct insert out of E.coli
- Next step assembly - LacI test vector and Final assembly vector
- Currently waiting for Part B step 2 Midi-prep results to start this step
Schedule & Lab notes
Week 7
| Week 6 | Monday | Tuesday | Wednesday | Thursday | Friday
|
| MORNING
| Starting assembly of AmyE vector
- Restriction digestion of BB k14070 for the AmyE vector (using Eco and Spe)
- Restriction digestion of BB k14064 for the AmyE vector (using Eco and Xba)
- Restriction digestion of 5' integration site (k08) for the PyrD vector (using Eco and Spe)
- PCR amplification of vector backbone PSB1C3 for the PyrD vector
|
- Gel analysis and extraction of 5' int site for PyrD vector (repetition of step due to absence of DNA during gel analysis yesterday)
- Gel purification of k70
- Gel purification of k08
- Re-analysis of k70, k64 (for AmyE) on gel to work out ratios for ligation set up
- Re-analysis of k08, Pme oligos and pSB1C3 (for PyrD) on gel to work out ratios for ligation set up
- Restriction digestion of pveg promoter (k53) (using Eco and Spe) and spec cassette (k65) (using Xba and Pst) for PyrD vector
- Restriction digestion of pSB1C3 for PyrD (using Eco and Pst)
|
- Check for transformed colonies (colonies that have taken up the vector with the 5'diff) and prepare for colony PCR
- Gel purification of k53 and k65 for AmyE in preparation for ligations this afternoon
- Gel extraction and re-analysis on gel of k53, k65 and psB1C3 for Spec casette in preparation for ligations this afternoon
|
- Transformation of overnight ligations of:
k64 and k70, k70 only,
Spec
and 5' PyrD diff
|
- Replica plating and colony PCR of:
Spec and 5' PyrD diff
k64 and k70. k70 only was discarded since this was purely for a baground check
|
| AFTERNOON
|
- PCR purification of PSB1C3 vector
- PCR purification of BB k14064 digestion products
- Gel analysis of digestion products of BB k14070
- Gel extraction of digestion products of BB k14070
|
- Restriction digestion of k64 and subsequent PCR purification (repetition of step due to absence of DNA during gel analysis)
- Gel analysis of k70, k64 (for AmyE) to work out ligation ratios
- Gel analysis and extraction of k53 and k65
- Bench (1 hour) and overnight ligation of 5'diff with the pSB1C3 vector
- Transformation of E.Coli with the bench ligated vector
|
- Dephosphorylation of k64 and set up of overnight ligations for k64 and k70 (vector and insert) and k64 (vector)only (for negative control; check of background)
- Set up overnight ligations of SpecR
|
|
- Gel analysis of colony PCR products of Spec and 5' PyrD diff
- Annealing of diff P oligos (used for both PyrD and AmyE vectors)
|
Week 8
| Week 8 | Monday | Tuesday | Wednesday | Thursday | Friday | Saturday
|
| MORNING
|
Set up overnight ligations for standard assembly (BBA) and 3A cloning (3A) of dif P
- Restriction digestion of 3' integration site (K02) in the A2 vector ( Using Eco and Xba) for BBA
- Restriction digestion of 3' integration site (K09) in the AK3 vector ( Using Eco and Xba) for BBA
- PCR purification of 3' integration site (K02) in the A2 vector ( Using Eco and Xba) for BBA
- PCR purification of 3' integration site (K09) in the AK3 vector ( Using Eco and Xba) for BBA
- Set up 5 ml culture of spec from colony 1 of replica plate in shaking incubator @ 37 degrees
|
- Restriction digestion of 3' integration site (K02) in the A2 vector ( Using Xba and Pst) for 3A
- Restriction digestion of 3' integration site (K09) in the AK3 vector ( Using Xba and Pst) for 3A
|
- Transformations using the overnight ligations showed a lot of background. Therefore we set up ligations for K02 and K09 using 3A cloning. The results will show if this method is preferable due to less background.
- Midiprep of CmR vector and test digest using Eco and Spe
- Backbone PCR of PSB1C3 vector (1st attempt) for common use
|
- Replica plating of transformed colonies for k09 from the plate with the insert (diff P) - 45 sigle colonies were plated
- The first 15 of the above colonies were colony PCRed using dif PES Fwd and pSB Rev
|
- Gel analysis of colony PCR from yesterday (first 15 replica plated colonies
- Set up further colony PCR reactions for the same 15 colonies using pSB Fwd and pSB Rev primers
- Gel analysis of pSB1C3 - after backbone PCR and after digestion (looked contaminated!)
- Test digests of K54 K70 Midi prep using i) EcoRI, ii) SpeI and iii) EcoRI + SpeI
- Screen next 20 colonies by colony PCR, use higher temperatures to avoid previous non specific annealing
|
- Miniprep of 4 overnight cultures (dif P and 3' Insert for PyrD) - colonies 4,5,7 & 9
- Run Colony PCR results on a Gel - pick promissing candidates for mini prep.
|
| AFTERNOON
|
- Gel analysis of PCR purified K02 and K09 with the insert (diff P) in between to work out ratios for the liagation
- Dephosphorylation of digested A2 vector with 3' integration site (K02)
- Dephosphorylation of digested AK3 vector with 3' integration site (K09)
- Set up overnight ligation of A2 vector with 3' integration site (K02) with diff P (insert) and A2 vector only
- Set up overnight ligation of AK3 vector with 3' integration site (K09) with diff P (insert) and AK3 vector only
- Colony PCR and gel analysis of plated culture (from plate wash on Friday) with K64 and K70
- Overnight 100 ml culture of spec @ 14 degrees
|
- Electroporation of the 4 overnight ligations described on Thursday afternoon
- Gel extraction of the digestion products ( 3' integration sites - now our inserts) described this morning for 3A
- Gel analysis of gel extracted K02 nad K09 (inserts) with diff P (also an insert) and pSB1C3 (vector) in between
- Set up overnight 100 ml culture of CmR vector (K64 and K70) for midiprep tomorrow
- Set up overnight culture plates (AmpR) for the 4 electroporated cultures (colonies that survive will contain transformed cells
|
- PCR purification of PSB1C3 PCR amplified vector
- Check concentration of midi prepped CmR
- Run a gel to visualise the results - Gel contained pSB1C3 (PCR purified) , CmR (Midiprepped) and CmR digested (Midiprepped)
|
- Backbone PCR of pSB1C3 (2nd attempt), PCR purified and then digested with Eco and Pst
- Midipreps sent for sequencing ( Spec and CmR)
|
Backbone PCR of pSB1C3 using PFU (3rd attempt)
- Set up overnight 5 ml cultures for miniprepping tomorrow - 4 cultures were set up by looking at the gel this morning; 2 positive looking (4 & 7), 1 negative (5) and one containing nothing (9)
|
- Diagnostic digests of minipreps - Two digests : One with Spe & Pst and other with Xba & Spe
|
Week 9
| Week 8 | Monday | Tuesday | Wednesday | Thursday | Friday
|
| MORNING
|
- Gel analysis of Mini preps and diagnostic digests from Saturday - Colony 4 looked best
- Test Digest of Mini Prep K02+dif EcoRI and SpeI
|
- Midiprep of Colony 4 - concentration 110 ng/ul
- Restriction digest of K02 from registrty for 3A assembly.
|
- Gel purification of insert (35 ul)
- Gel analysis of vector and insert to work out ratios for ligations
|
- Transformation with overnight ligations
- PCR amplified the PSB1C3 vector for 3A assembly
- Gel Purified K02 and PBB1C3 digests
|
- The transformations were highly successful!! The Vector only plate showed no colonies and the Insert & Vector plate showed many individual colonies
- 10 individual colonies were replica plated and used for colony PCR
- Dephosphorylate PSB1C3 using alkaline phosphotase
|
|
| AFTERNOON
|
- Set up 200 ml overnight culture of colony 4 (containing Dif P and K09) for midiprep tomorrow
- Second Test digest SpeI PME - no positive results. Decided to repeat the step using 3A assembly method to reduce background from vector.
|
- Digests set up for Vector (SpecR) with Spe & Pst and Insert (dif P & K09)with Xba & Pst
- PCR purification of vetor (35 ul)
- Gel extraction of insert after gel analysis (35 ul)
- Midi prep of sample 8 K54 + K70
|
- Dephosphorylation of vector
- Set up two overnight ligations; Vector & Insert and Vector only
|
- Both ligations (Insert & Vector and Vector only) were plated in CmR and incubated overnight
|
- Gel analysis of colony PCR products
- set up ligation reaction K02+dif using 3A method for Transformation on Monday.
|
Week 10
| Week 8 | Monday | Tuesday | Wednesday | Thursday | Friday
|
| MORNING
|
- Gel analysis of Mini preps and diagnostic digests from Saturday - Colony 4 looked best
- Test Digest of Mini Prep K02+dif EcoRI and SpeI
|
- Midiprep of Colony 4 - concentration 110 ng/ul
- Restriction digest of K02 from registrty for 3A assembly.
|
- Gel purification of insert (35 ul)
- Gel analysis of vector and insert to work out ratios for ligations
|
- Transformation with overnight ligations
- PCR amplified the PSB1C3 vector for 3A assembly
- Gel Purified K02 and PBB1C3 digests
|
- The transformations were highly successful!! The Vector only plate showed no colonies and the Insert & Vector plate showed many individual colonies
- 10 individual colonies were replica plated and used for colony PCR
- Dephosphorylate PSB1C3 using alkaline phosphotase
|
|
| AFTERNOON
|
- Set up 200 ml overnight culture of colony 4 (containing Dif P and K09) for midiprep tomorrow
- Second Test digest SpeI PME - no positive results. Decided to repeat the step using 3A assembly method to reduce background from vector.
|
- Digests set up for Vector (SpecR) with Spe & Pst and Insert (dif P & K09)with Xba & Pst
- PCR purification of vetor (35 ul)
- Gel extraction of insert after gel analysis (35 ul)
- Midi prep of sample 8 K54 + K70
|
- Dephosphorylation of vector
- Set up two overnight ligations; Vector & Insert and Vector only
|
- Both ligations (Insert & Vector and Vector only) were plated in CmR and incubated overnight
|
- Gel analysis of colony PCR products
- set up ligation reaction K02+dif using 3A method for Transformation on Monday.
|
Week 11
| Week 8 | Monday | Tuesday | Wednesday | Thursday | Friday
|
| MORNING
|
- Gel analysis of Mini preps and diagnostic digests from Saturday - Colony 4 looked best
- Test Digest of Mini Prep K02+dif EcoRI and SpeI
|
- Midiprep of Colony 4 - concentration 110 ng/ul
- Restriction digest of K02 from registrty for 3A assembly.
|
- Gel purification of insert (35 ul)
- Gel analysis of vector and insert to work out ratios for ligations
|
- Transformation with overnight ligations
- PCR amplified the PSB1C3 vector for 3A assembly
- Gel Purified K02 and PBB1C3 digests
|
- The transformations were highly successful!! The Vector only plate showed no colonies and the Insert & Vector plate showed many individual colonies
- 10 individual colonies were replica plated and used for colony PCR
- Dephosphorylate PSB1C3 using alkaline phosphotase
|
|
| AFTERNOON
|
- Set up 200 ml overnight culture of colony 4 (containing Dif P and K09) for midiprep tomorrow
- Second Test digest SpeI PME - no positive results. Decided to repeat the step using 3A assembly method to reduce background from vector.
|
- Digests set up for Vector (SpecR) with Spe & Pst and Insert (dif P & K09)with Xba & Pst
- PCR purification of vetor (35 ul)
- Gel extraction of insert after gel analysis (35 ul)
- Midi prep of sample 8 K54 + K70
|
- Dephosphorylation of vector
- Set up two overnight ligations; Vector & Insert and Vector only
|
- Both ligations (Insert & Vector and Vector only) were plated in CmR and incubated overnight
|
- Gel analysis of colony PCR products
- set up ligation reaction K02+dif using 3A method for Transformation on Monday.
|
Week 12
| Week 8 | Monday | Tuesday | Wednesday | Thursday | Friday
|
| MORNING
|
- Gel analysis of Mini preps and diagnostic digests from Saturday - Colony 4 looked best
- Test Digest of Mini Prep K02+dif EcoRI and SpeI
|
- Midiprep of Colony 4 - concentration 110 ng/ul
- Restriction digest of K02 from registrty for 3A assembly.
|
- Gel purification of insert (35 ul)
- Gel analysis of vector and insert to work out ratios for ligations
|
- Transformation with overnight ligations
- PCR amplified the PSB1C3 vector for 3A assembly
- Gel Purified K02 and PBB1C3 digests
|
- The transformations were highly successful!! The Vector only plate showed no colonies and the Insert & Vector plate showed many individual colonies
- 10 individual colonies were replica plated and used for colony PCR
- Dephosphorylate PSB1C3 using alkaline phosphotase
|
|
| AFTERNOON
|
- Set up 200 ml overnight culture of colony 4 (containing Dif P and K09) for midiprep tomorrow
- Second Test digest SpeI PME - no positive results. Decided to repeat the step using 3A assembly method to reduce background from vector.
|
- Digests set up for Vector (SpecR) with Spe & Pst and Insert (dif P & K09)with Xba & Pst
- PCR purification of vetor (35 ul)
- Gel extraction of insert after gel analysis (35 ul)
- Midi prep of sample 8 K54 + K70
|
- Dephosphorylation of vector
- Set up two overnight ligations; Vector & Insert and Vector only
|
- Both ligations (Insert & Vector and Vector only) were plated in CmR and incubated overnight
|
- Gel analysis of colony PCR products
- set up ligation reaction K02+dif using 3A method for Transformation on Monday.
|
Week 13
| Week 8 | Monday | Tuesday | Wednesday | Thursday | Friday
|
| MORNING
|
- Gel analysis of Mini preps and diagnostic digests from Saturday - Colony 4 looked best
- Test Digest of Mini Prep K02+dif EcoRI and SpeI
|
- Midiprep of Colony 4 - concentration 110 ng/ul
- Restriction digest of K02 from registrty for 3A assembly.
|
- Gel purification of insert (35 ul)
- Gel analysis of vector and insert to work out ratios for ligations
|
- Transformation with overnight ligations
- PCR amplified the PSB1C3 vector for 3A assembly
- Gel Purified K02 and PBB1C3 digests
|
- The transformations were highly successful!! The Vector only plate showed no colonies and the Insert & Vector plate showed many individual colonies
- 10 individual colonies were replica plated and used for colony PCR
- Dephosphorylate PSB1C3 using alkaline phosphotase
|
|
| AFTERNOON
|
- Set up 200 ml overnight culture of colony 4 (containing Dif P and K09) for midiprep tomorrow
- Second Test digest SpeI PME - no positive results. Decided to repeat the step using 3A assembly method to reduce background from vector.
|
- Digests set up for Vector (SpecR) with Spe & Pst and Insert (dif P & K09)with Xba & Pst
- PCR purification of vetor (35 ul)
- Gel extraction of insert after gel analysis (35 ul)
- Midi prep of sample 8 K54 + K70
|
- Dephosphorylation of vector
- Set up two overnight ligations; Vector & Insert and Vector only
|
- Both ligations (Insert & Vector and Vector only) were plated in CmR and incubated overnight
|
- Gel analysis of colony PCR products
- set up ligation reaction K02+dif using 3A method for Transformation on Monday.
|