IGEM:Harvard/2008/Lab Notebooks/DailyBook/Week12/Chemical and Light: Difference between revisions

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We followed the Takara 25°C protocol and transformed all of the ligations into DH5α. We also let some of the ligations run overnight (16 °C for 8 hours -->12 °C for 4 hours --> 4 °C for eternity).
We followed the Takara 25°C protocol and transformed all of the ligations into DH5α. We also let some of the ligations run overnight (16 °C for 8 hours -->12 °C for 4 hours --> 4 °C for eternity).
=Colony PCR 09/27=

Revision as of 16:07, 27 September 2008

9/22 RE digests

With NEB enzymes, 60 min (buffer 2+BSA):

  • 128#1 XPXmnI
  • 128#5 XSXmnI
  • 128#9 ESXmnI

The XmnI is to cut the backbone, which has a similar length to the mtrB constructs.

With Fermentas enzymes, 25 min:

  • 116 SP
  • 117 SP
  • 108 SP
  • 51 EX
  • 63 XP

9/23 ligations

The following ligations were performed using 1:6 molar ratio and the Takara kit at 16°C for 45min:

  • 128ES+63EX (also did a 5min, 25°C ligation to test whether the extraction method or the ligation conditions are improving the process)
  • 128XP+108SP
  • 128XP+116SP
  • 128XP+117SP
  • 51EX+38ES
    • Neg ctrl with water as insert
  • 117SP+128XS+[63XP]
  • 108SP+128XS+[63XP]
  • 116SP+128XS+[63XP]

Note that [63] means P63 was added 20 minutes into the ligation (to reduce uptake only of terminator). Prior to addition of ligase, DNA mix was heated to 65°C for 2 minutes and allowed to cool. For ones with 63 added later, the 63 was heated prior to addition, and more ligation mix was added next to make up the volume.

All transformed into DH5α.

9/24 transformation results

Only the P128ES+63EX ligations gave colonies. Both the long and short ligations gave hundreds of colonies, although the long one had more.

9/24 P128+63EX colony PCR

PCR using BBpfx and mtrB-internal500. Should produce bands a little over 500bp. (Numbers on gel correspond to numbers on master plate.)


Everything as expected. New primer works well at 55°C.

Lane 1: Colony 1

Lane 2: Colony 2

Lane 3: Colony 3

Lane 4: Colony 4

Lane 5: Colony 5

Lane 6: 1 kb plus ladder

Lane 7: Colony 6

Lane 8: Colony 7

Lane 9: Colony 8

Lane 10: Colony 9

Lane 11: Colony 10

Lane 12: control

Ligations/Transformations 09/26

25min RE digests (re)done on appropriate minipreps using Fermentas enzymes and extracted using Clonewll gels.

We used the Takara ligation kit to do the following ligations (1:6 vector:insert):

  • P38SP + P130XP
  • P39SP + P130XP
  • P38SP + P51XP
  • P116SP + P130XP
  • P108SP + P130XP
  • P117SP + P130XP
  • P51EX + P38ES (1/20)
  • P51EX + P38ES (1/100)
  • P51EX ligation control

We followed the Takara 25°C protocol and transformed all of the ligations into DH5α. We also let some of the ligations run overnight (16 °C for 8 hours -->12 °C for 4 hours --> 4 °C for eternity).

Colony PCR 09/27

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