IGEM:Peking/2007/Count-Conjugation-Notebook/2007-8-12
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Tandem OriT by Mingzhi Qu, Ze Ren
Conjugation Test:R751_pSC101 X Dh5α_psb1A2(II)
- Donor: C600-R751_psc101 (Tc+)
- Recipient: Dh5α+ psb1A2 (Amp+)
- Control:
- donnor:C600_R751
- donnor:C600_pSC101
- mixing condition: 220rpm, 90min.
- Day1:
- Get the plates from -4 fridge:C600-R751_psc101(Tc+), C600_psb1A2(Amp+), C600_R751, Dh5α_psc101
- Amplification Culture in liquid LB for 12 hours.
- Day2:
- put 2mL of culture into 20mL of LB with antibiotics, sub-culturing.
Donor
- final OD600:
#R751+psc101 0.505 #C600_R751 0.508 #C600_psc101 0.570
Recipient
- final OD600:
#Dh5α+pSB1A2 1.571
Plating the conjugant mix
- All mix were set up serial dilutions:original, 10-1, 10-2.
- culture on Tc+/Amp+ plate.
result(Next day)
No Donor X recipient time rpm clones(original) clones(e-1) clones(e-2) 1 C600_R751_psc101_log X Dh5α_pSB1A2 90 220 1000+ 100+ <10 2 C600_R751 X Dh5α_pSB1A2 90 220 0 0 0 3 C600_psc101 X Dh5α_pSB1A2 90 220 100 20 0
oriT Knock Out by Liu Ting
colony PCR test for DH5a-oriT-deleted R751 , DH5a-oriT-deleted F & DH5a-pUC18 with oriT-deleted pSC101 fragment
PCR system(Every 200 ul is distributed to 10 tubes, that is, 20ul/PCR tube)
- PCR system for DH5a-oriT-deleted R751
pKO3-R(100uM) 2 ul R1S(20uM) 10 ul dNTP(2.5uM) 4 ul 10X Taq Buffer 20 ul Taq 1 ul ddH2O 163ul (template) -------------------- Total 200ul
- PCR system for DH5a-oriT-deleted F
F1S(20uM) 10 ul F2A(20uM) 10 ul dNTP(2.5uM) 4 ul 10X Taq Buffer 20 ul Taq 1 ul ddH2O 155ul (template) -------------------- Total 200ul
- PCR system for DH5a-pUC18 with oriT-deleted pSC101 fragment
S1S(100uM) 2 ul S2A(100uM) 2 ul dNTP(2.5uM) 4 ul 10X Taq Buffer 20 ul Taq 1 ul ddH2O 171ul (template) -------------------- Total 200ul
PCR condition
for all the above three: 94℃ 10min; (94℃ 45s,51℃ 1min,72℃ 1min30s)/cycle X 30 cycles; 72℃ 10min; 16℃ 10min; end.
electrophorsis result
none...
Lock & Key By Yu Tao
Transformation: R0040<-J01010 and R0010<-J01008
Transformation Result: R0040<-J01010 and R0010<-J01008
- There are colonies both in the experimental plate and the negative control plate.
- For R0040<-J01010, more clonies grow in the expeimental plate, but the opposite result for R0010<-J01008.
- Number of colonies: around 100 or 200.
- Select probable positive colonies from the experimental plate, culture them in liquid LB overnight for mini-prep.
Preparation of Competent Cells
- Because the newly produced competent cells are of low efficiency, I decide to make some competent cells once more.
- Transform 1uL B0015 competent cells for efficiency test.