Team:Groningen/Notebook/Wetwork 5July2012

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{{HeaderGroningen2012}}
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'''Micro-array preparation'''
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<p class="margin"><br><br><br><br>
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cDNA purification
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Micro-array preparation<br><br>
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degradation of mRNA:
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cDNA purification<br><br>
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*added 3 ul of 2,5 M NaOH to reverse transcription mix (ran overnight)
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*vortexed, spinned down
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*15'37 degrees Celsius
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*added 15 ul 2 M HEPES free acid
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*mixed by pipetting up/down
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purified cDNA using NucleoSpin Extract II columns ([[File:Groningen_RR20120705_cDNAprotocol.pdf]]).
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degradation of mRNA:<br>
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*added 3 ul of 2,5 M NaOH to reverse transcription mix (ran overnight)<br>
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*vortexed, spinned down<br>
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*15'37 degrees Celsius<br>
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*added 15 ul 2 M HEPES free acid<br>
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*mixed by pipetting up/down<br><br>
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Qualitycheck with nanodrop.
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purified cDNA using NucleoSpin Extract II columns.<br><br>
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Results:
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Qualitycheck with nanodrop.<br><br>
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*Fresh_0207A: 274,3 ng/ul
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*Fresh_0207B: 247,2 ng/ul
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*Bad_0207A: 232,9 ng/ul
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*Bad_0207B: 42,9 ng/ul ------> not enough (treshold = 60 ng/ul).
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*Fresh_0307A: 249,8 ng/ul
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*Fresh_0307B: 241,0 ng/ul (but low quality)
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*Bad_0307A: 249,8 ng/ul
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*Bad_0307B: 69,9 ng/ul
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kept all cDNA in -80 freezer. repeated cDNA synthesis for Fresh_0307A, Bad_0207B, Bad_0307B
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Results:<br>
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*Fresh_0207A: 274,3 ng/ul<br>
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*Fresh_0207B: 247,2 ng/ul<br>
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*Bad_0207A: 232,9 ng/ul<br>
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*Bad_0207B: 42,9 ng/ul ------> not enough (treshold = 60 ng/ul).<br>
 +
*Fresh_0307A: 249,8 ng/ul <br>
 +
*Fresh_0307B: 241,0 ng/ul (but low quality)<br>
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*Bad_0307A: 249,8 ng/ul<br>
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*Bad_0307B: 69,9 ng/ul<br><br>
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kept all cDNA in -80 freezer. repeated cDNA synthesis for Fresh_0307A, Bad_0207B, Bad_0307B<br><br>
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NEW POSSIBLE BACKBONE! Also for biobrick submission<br><br>
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Nisa/Emeraldo<br><br>
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1.) After discussion with Jan Willem about our critical situation in the backbone problem, we found new backbone that can be used for B. subtilis: integration plasmid with double crossover on SacA gene, cm resistant (B. subtilis) and amp+cm resistant in E. coli. We have to engineer this backbone to be biobrick ready by adding prefix and suffix + terminator in the MCS.<br><br>
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2.) O/N the E.coli containing the new plasmid(pSAC-CM) for plasmid isolation tomorrow.<br><br>
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3.) Preparation for B.substilis transformation: Molgen method and Team Edinburgh method; Tomorrow: transform B. subtilis with pSac-CM and BBa_I742123 with two different methods.<br><br>
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<br>
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<A HREF="https://2012.igem.org/Team:Groningen/Notebook"><FONT COLOR=#ff6700>Back to notebook</FONT></A>
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{{Template:SponsorsGroningen2012}}

Latest revision as of 16:56, 25 September 2012








Micro-array preparation

cDNA purification

degradation of mRNA:
*added 3 ul of 2,5 M NaOH to reverse transcription mix (ran overnight)
*vortexed, spinned down
*15'37 degrees Celsius
*added 15 ul 2 M HEPES free acid
*mixed by pipetting up/down

purified cDNA using NucleoSpin Extract II columns.

Qualitycheck with nanodrop.

Results:
*Fresh_0207A: 274,3 ng/ul
*Fresh_0207B: 247,2 ng/ul
*Bad_0207A: 232,9 ng/ul
*Bad_0207B: 42,9 ng/ul ------> not enough (treshold = 60 ng/ul).
*Fresh_0307A: 249,8 ng/ul
*Fresh_0307B: 241,0 ng/ul (but low quality)
*Bad_0307A: 249,8 ng/ul
*Bad_0307B: 69,9 ng/ul

kept all cDNA in -80 freezer. repeated cDNA synthesis for Fresh_0307A, Bad_0207B, Bad_0307B

NEW POSSIBLE BACKBONE! Also for biobrick submission

Nisa/Emeraldo

1.) After discussion with Jan Willem about our critical situation in the backbone problem, we found new backbone that can be used for B. subtilis: integration plasmid with double crossover on SacA gene, cm resistant (B. subtilis) and amp+cm resistant in E. coli. We have to engineer this backbone to be biobrick ready by adding prefix and suffix + terminator in the MCS.

2.) O/N the E.coli containing the new plasmid(pSAC-CM) for plasmid isolation tomorrow.

3.) Preparation for B.substilis transformation: Molgen method and Team Edinburgh method; Tomorrow: transform B. subtilis with pSac-CM and BBa_I742123 with two different methods.


Back to notebook