IGEM:Peking/2007/Count-Conjugation-Notebook/2007-8-28

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Contents

Tandem OriT by Mingzhi Qu, Qingsi Zhen

Conjugation Test:F+_F-OriT-pSB1A2 X Dh5α_psb3K3(III)

  • Donor: F+_F-OriT-pSB1A2 (Amp+)
  • Recipient: Dh5α_psb3K3(Kan+)
  • Control:
  1. donnor:Dh5α_R0010-pSB1A2 (Amp+)
  • mixing condition: 220rpm, 90min.
  • Day1:
  1. Get the plates from -4 fridge:F+_F-OriT-pSB1A2 (Amp+), Dh5α_R0010-pSB1A2, Dh5α_psb3K3(Kan+)#Amplification Culture in liquid LB for 12 hours.
  • Day2:
  • put 2mL of culture into 20mL of LB with antibiotics, sub-culturing.

Donor

  • final OD600:
F+_F-OriT-pSB1A2   0.452
Dh5α_R0010-pSB1A2  0.461

Recipient

  • final OD600:
#Dh5α_psb3K3       1.270

Mixing

  • Wash 2 times.

Plating the conjugant mix

  • All mix were 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  F+_F-OriT-pSB1A2        X  Dh5α_psb3K3  90  220      2000+             200+          -
2  Dh5α_R0010-pSB1A2       X  Dh5α_psb3K3  90  220      1000+             <100          -
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