Team:HokkaidoU Japan/Notebook/aggregation Week 11
From 2012.igem.org
September 10th
Digestion of eCFP-RBS-pSB1A2 and pBAD-RBS-pSB1A2
To make a construct of pBAD-RBS-eCFP-RBS-Ag43-dT-pSTV28 by 3piece ligation, we digested pBAD-RBS-eCFP-RBS-pSB1A2 with EcoRI & SpeI, Ag43-dT-pSB1AK3 (previously digested with HindIII) with XbaI & NotI and pSTV28 with EcoRI and NotI. Then we digested pT7-RBS-pSB1C3 with XbaI & SpeI as a control for confirmation of the ability of restriction enzyme. Insert1 (pBAD-RBS-eCFP-RBS-pSB1A2)
DNA solution ( 35ng/ul) | 17 ul |
EcoRI | 1 ul |
SpeI | 1 ul |
10xH buffer | 3 ul |
DW | 8 ul |
Total | 30 ul |
Insert2 (Ag43-dT-pSB1AK3)
DNA solution ( 35ng/ul) | 25 ul |
XbaI | 1 ul |
NotI | 1 ul |
10xK buffer | 1.5 ul |
100xBSA | 0.3ul |
DW | 1.5 ul |
Total | 30 ul |
Vector(pSTV28)
DNA solution ( 15ng/ul) | 9 ul |
EcoRI | 1 ul |
NotI | 1 ul |
10xH buffer | 2 ul |
10xBSA | 0.2ul |
DW | 7 ul |
Total | 20 ul |
control (pT7-RBS-pSB1C3)
DNA solution (30~40 ng/ul) | 10 ul |
XbaI | 1 ul |
SpeI | 1 ul |
10xM buffer | 2 ul |
DW | 6 ul |
Total | 20 ul |
Number | Degree | Minute |
1 | 37 | 120 |
2 | 70 | 20 |
3 | 4 | HOLD |
Ethanol precipitation of ptet-RBS-eYFP-dT-pSB1A2 and pSTV28
- Added 5 ul of NaoAc, 1.5 ul of glycogen and 125 ul of 100% ethanol.
- Centrifuged in 14000 rpm, 30 min at 4C.
- Remove supernatant and added 220 ul of 70% ethanol.
- Centrifuged in 15000 rpm, 15 min at 4C.
- Remove supernatant and air drying in room temperature then added 5 ul of DW.
We confirmed that the concentration of Insert1 DNA solution is 50 ng/ul, Insert2 DNA solution is 10~15 ng/ul and Vector DNA solution is 10 ng/ul.
Ligation of pBAD-RBS-eCFP-RBS, Ag43-dT and pSTV28
Vector DNA (10 ng/ul) | 4 ul |
Insert1 DNA (50 ng/ul) | 2 ul |
Insert2 DNA (10~15 ng/ul) | 4 ul |
Ligation Mighty Mix | 10 ul |
Total | 20 ul |
Ligation reaction time was in detail below.
Degree | Minute |
16 | 30 |
65 | 10 |
4 | Hold |
Transformation of pBAD-RBS-eCFP-RBS-Ag43-dT-pSTV28
- Mixed 2 ul pBAD-RBS-eCFP-RBS-Ag43-dT-pSTV28 ligation product to 50 ul of thawed competent cells on ice.
- Incubated on ice for 30 min.
- Mixed 350 ul of LB.
- Incubated for 2 hrs to get the resistance to Chloramphenicol.
- Prepared and Labeled two plastic plates with LB plate medium which contained appropriate antibiotics (LBC).
- Plated 300 ul of the culture onto first dish and spread.
- Mixed 450 ul of LB to 50 ul of the culture and plated 300 ul of it onto second dish and spread.
- Incubated the plates at 37C for 14 hours.
September 11th
Colony PCR of pBAD-RBS-eCFP-RBS-pSB1A2
DNA solution | 4 ul |
Kapa-Taq(Taq polymerase) | 5 ul |
Forward Primer(pbad-f2 primer) | 0.5 ul |
Reverse Primer(PS-R down primer) | 0.5 ul |
Total | 10 ul |
Number | Degree | Second |
1 | 95 | 120 |
2 | 95 | 30 |
3 | 53.3 | 30 |
4 | 72 | 60 |
5 | 72 | 60 |
6 | 4 | HOLD |
Cycle:2~4 x 35
- We noticed that this step was actually 68.9 degree after reaction.
We used N1 (DW only) and N2(pBAD-RBS-Ag43-dT-pSB1A2)as controls. Desired product is about 542bp.
[[image:|thumb|Colony PCR result]]
Because of mis-setting the PCR program, we failed to amplify desired DNA fragment so we retried the colony PCR in same reagent, correct PCR machine program.
[[image:|thumb|Colony PCR result]]
We noticed that the ligated DNA contains at least Ag43-dT-BioBrick_Suffix complex. We selected No.2,4 for incubation for mini-prep and No.5,6 for Aggregation check (see details below).
September 12th
Aggregation check of pBAD-RBS-eCFP-RBS-Ag43-dT-pSTV28
Aggregation check for No.5,6 colonies selected by colony PCR in 11th.
- Prepared 5 ml LBA into glass tubes.
- Re-suspended 2 colony mixture (No.2 and No.5 respectively).
- Incubated at 37C for hrs.