Team:DTU-Denmark/Notebook/11 July 2013

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=208=
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{{:Team:DTU-Denmark/Templates/StartPage|11 July 2013}}
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Navigate to the [[Team:DTU-Denmark/Notebook/10_July_2013|Previous]] or the [[Team:DTU-Denmark/Notebook/12_July_2013|Next]] Entry
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=Lab 208=
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<hr/>
==Main purpose==
==Main purpose==
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<hr/>
*PCR with USER primers to [[Team:DTU-Denmark/Notebook/11_July_2013#Combine_Nir_operon_with_pZA21|combine Nir operon with pZA21]]
*PCR with USER primers to [[Team:DTU-Denmark/Notebook/11_July_2013#Combine_Nir_operon_with_pZA21|combine Nir operon with pZA21]]
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==Who was in the lab==
==Who was in the lab==
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Ariadni,Henrike,Julia,Jakob
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<hr/>
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Ariadni, Henrike, Julia, Jakob, Gosia
==Procedure==
==Procedure==
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<hr/>
===Combine Nir operon with pZA21===
===Combine Nir operon with pZA21===
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triplets of each of the two Nir Operon extracts that we have made yesterday, including one negative control:
triplets of each of the two Nir Operon extracts that we have made yesterday, including one negative control:
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*Nir 2a(I,II,III)
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*Nir 1(a, b, c)
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*Nir 2b(I,II,III)
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*Nir 2(a, b, c)
Using the following PCR program:
Using the following PCR program:
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===PCR for promoter test===
===PCR for promoter test===
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We want to test the inducible AraB promoter using plasmid pZA21 without its native promoter and RFP gene.
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We want to test the inducible AraBAD promoter using plasmid pZA21 without its native promoter and RFP gene.  
We performed 3 different PCR reactions using user primers.
We performed 3 different PCR reactions using user primers.
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Each PCR reaction was performed in triplicate.
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Samples are named:
Samples are named:
*1,2,3 -> pZA21 with no native promoter - Primers 13a and 13b, template pZA21 miniprep
*1,2,3 -> pZA21 with no native promoter - Primers 13a and 13b, template pZA21 miniprep
*4,5,6 -> RFP - Primers 14a and 14b, template RFP in pZE21 miniprep
*4,5,6 -> RFP - Primers 14a and 14b, template RFP in pZE21 miniprep
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*7,8,9 -> AraB promoter - Primers 12a and 12b, template biobrick K808000
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*7,8,9 -> AraBAD promoter - Primers 12a and 12b, template biobrick K808000
Settings for PCR of 1,2,3
Settings for PCR of 1,2,3
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{| class="wikitable sortable" style="text-align: right"
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{| class="wikitable" style="text-align: right"
! Temperature (<sup>o</sup>C)!! Time (min)!! Rounds
! Temperature (<sup>o</sup>C)!! Time (min)!! Rounds
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|-
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Settings for PCR of 4-9
Settings for PCR of 4-9
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{| class="wikitable sortable" style="text-align: right"
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{| class="wikitable" style="text-align: right"
! Temperature (<sup>o</sup>C)!! Time (min)!! Rounds
! Temperature (<sup>o</sup>C)!! Time (min)!! Rounds
|-
|-
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| 10|| ∞ || -
| 10|| ∞ || -
|}
|}
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===Gel analyses of Nir operon, PCR product from [[Team:DTU-Denmark/Notebook/10_July_2013#Extraction_PCR|10-07-2013]]===
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We run 0,8% agarose gel with 9 samples.
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===PCR purification===
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PCR fragments for the Nir operon from todays PCR.
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==Result==
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<hr/>
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0.8 % Agorase Gel to test yesterday's PCR of the Nir operon with different extension times
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Wells
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*1: Nir extension time 2:00
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*2: Nir extension time 2:00
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*3: Nir extension time 2:00
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*4: Nir extension time 3:00
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*5: 1kb ladder
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*6: Nir extension time 3:00
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*7: Nir extension time 3:00
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*8: Nir extension time 4:00
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*9: Nir extension time 4:00
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*10: Nir extension time 4:00
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[[File:2013-07-11_Nir_PCr_results.jpg|600px]]
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==Conclusion==
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<hr/>
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We have now tried PCR of Nir more than one time and same result appear. This must then be the true chromosomal fragment but with some additional sequence in the middle. We will try to do another PCR with USER primers tomorrow to see if we then get same fragments or shorter ones.
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Navigate to the [[Team:DTU-Denmark/Notebook/10_July_2013|Previous]] or the [[Team:DTU-Denmark/Notebook/12_July_2013|Next]] Entry
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{{:Team:DTU-Denmark/Templates/EndPage}}

Latest revision as of 20:40, 16 September 2013

11 July 2013

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Contents

Lab 208


Main purpose


Who was in the lab


Ariadni, Henrike, Julia, Jakob, Gosia

Procedure


Combine Nir operon with pZA21

Following Mathildes Protocol for DpnI digestion of our linear pZA21 w. Uracil incerts

Mastermix for 7 PCR tubes, Using the mastermix protocol we got from Mathilde.

triplets of each of the two Nir Operon extracts that we have made yesterday, including one negative control:

  • Nir 1(a, b, c)
  • Nir 2(a, b, c)

Using the following PCR program:

timeTemp C
Denaturing2 min98
start of loop 10 sec 98
annealing30 sec60
elongation9 min72
goto start of loop 35 times
hold 10

PCR for promoter test

We want to test the inducible AraBAD promoter using plasmid pZA21 without its native promoter and RFP gene. We performed 3 different PCR reactions using user primers. Each PCR reaction was performed in triplicate.

Samples are named:

  • 1,2,3 -> pZA21 with no native promoter - Primers 13a and 13b, template pZA21 miniprep
  • 4,5,6 -> RFP - Primers 14a and 14b, template RFP in pZE21 miniprep
  • 7,8,9 -> AraBAD promoter - Primers 12a and 12b, template biobrick K808000

Settings for PCR of 1,2,3

Temperature (oC) Time (min) Rounds
98 2:00 1
98 0:20 35
58 0:45 35
72 2:00 35
72 5:00 1
10 -

Settings for PCR of 4-9

Temperature (oC) Time (min) Rounds
98 2:00 1
98 0:20 35
61 0:45 35
72 1:00 35
72 5:00 1
10 -

Gel analyses of Nir operon, PCR product from 10-07-2013

We run 0,8% agarose gel with 9 samples.

PCR purification

PCR fragments for the Nir operon from todays PCR.

Result


0.8 % Agorase Gel to test yesterday's PCR of the Nir operon with different extension times

Wells

  • 1: Nir extension time 2:00
  • 2: Nir extension time 2:00
  • 3: Nir extension time 2:00
  • 4: Nir extension time 3:00
  • 5: 1kb ladder
  • 6: Nir extension time 3:00
  • 7: Nir extension time 3:00
  • 8: Nir extension time 4:00
  • 9: Nir extension time 4:00
  • 10: Nir extension time 4:00

2013-07-11 Nir PCr results.jpg

Conclusion


We have now tried PCR of Nir more than one time and same result appear. This must then be the true chromosomal fragment but with some additional sequence in the middle. We will try to do another PCR with USER primers tomorrow to see if we then get same fragments or shorter ones.


Navigate to the Previous or the Next Entry