Team:UNIPV-Pavia/Calendar/June/settimana5

From 2011.igem.org

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<a name="June.2C_25th"></a><h2> <span class="mw-headline">June, 25th</span></h2>
 
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<p>All plates showed colonies after 19-hour growth at 37°C!!
 
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<ul><li>I7: small green colonies with satellite colonies were observed. Negative colonies are present and can be easily distinguished, because they are red.
 
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</li><li>I8: green colonies were observed, few negative colonies are pink.
 
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</li><li>I9: big colonies were observed, some of them are surrounded by satellite colonies.
 
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</li><li>I10: big colonies were observed, some light pink colonies are present, surrounded by satellite colonies.
 
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<p>These results are encouraging, because they are consistent with our expectations: ligations provide a high metabolic burden to the cell, so growth is slower. <i>Positive</i> green colonies are smaller and not surrounded by satellite colonies. <i>Negative</i> colonies are bigger and surrounded by satellite colonies, confirming that they had a faster growth than our ligations!
 
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</p><p>Two colonies from each plate were picked and incubated in 1ml LB+Amp.
 
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<tr align="center"><td><b>culture</b></td></tr>
 
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<tr><td>I7-1</td></tr>
 
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<tr><td>I7-2</td></tr>
 
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<tr><td>I8-1</td></tr>
 
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<tr><td>I8-2</td></tr>
 
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<tr><td>I9-1</td></tr>
 
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<tr><td>I9-2</td></tr>
 
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<tr><td>I10-1</td></tr>
 
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<tr><td>I10-2</td></tr>
 
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<p>Cultures were grown for 6 hours at 37°C 220 rpm, then glycerol stocks were prepared for each culture. Glycerol stocks are stored at -80°C in <i>iGEM 2010 ligations</i> box.
 
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<p>PhaP-1 and PhaP-2 cultures were grown. MiniPre was performed, with the following NanoDrop quantifications:
 
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<td>  PhaP-1    </td><td>  9,6 ng/ul
 
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<td>  PhaP-2    </td><td>  4,3 ng/ul
 
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<p>DNA quantification was poor, so we decided to perform digestion screening and to repeat Miniprep next week for sequencing.
 
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Digestion of:
 
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<td>  <i>Culture</i>    </td><td>  <i>Kind</i>  </td><td>  <i>Final reaction volume (ul) </i> </td><td>  <i>DNA (ul)</i>  </td><td>  <i>H20 (ul)</i>  </td><td>  <i>Enzyme 1</i>  </td><td>  <i>Enzyme 2</i> </td><td>  <i>Buffer H</i>
 
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<td>  PhaP-1    </td><td>  Screening </td><td>  25 </td><td>  20,5  </td><td>  0  </td><td>      1 EcoRI  </td><td> 1 PstI  </td><td> 2,5
 
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<td>  PhaP-2    </td><td>  Screening  </td><td>  25 </td><td> 20,5  </td><td>  0  </td><td>      1 EcoRI  </td><td> 1 PstI  </td><td> 2,5
 
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<p>Digestion was performed for 2 hours at 37°C. DNA was then gel run for screening. Both cultures were positive! Sequencing will be performed next week!
 
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<div class="center"><div class="thumb tnone"><div class="thumbinner" style="width:202px;"><img alt="Screening of PhaP-1 and PhaP-2" src="https://static.igem.org/mediawiki/2010/thumb/e/ec/Unipv_screening_PhaP_1_2.jpg/200px-Unipv_screening_PhaP_1_2.jpg" width="200" height="335" border="0" class="thumbimage" />  <div class="thumbcaption"><div class="magnify"></div>Screening of PhaP-1 and PhaP-2</div></div></div></div>
 
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Revision as of 10:01, 12 July 2011

UNIPV TEAM 2011

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JUNE: WEEK 5

June, 28th

Planning of the activity of the week. Freezer cleaning: for each ligation, we chose the correct clone and stored it in the iGEM 2010 ligations box. All these cloned were gel screened and sequenced and are correct! The colonies we chose are:

colony chosen ligation name
I0-2I0
I1-2I1
I2-1I2
I3-1I3
I4-2I4
I5-1I5
I6-2I6

Other colonies resulted positives at the screening but were NOT sequenced and are stored in the iGEM 2010 cemetery box. These clones are: I1-1, I2-2, I4-1 and I6-3.

June, 29th

Inoculum of I6, BBa_J23118, BBa_J23110, BBa_J23114, BBa_J23116 from glycerol stock in 5ml LB+Amp. Cultures were grown ON at 37°C 220rpm.

June, 30th

PhaP-1 and PhaP-2 plates showed colonies!! A colony from each plate was picked and used to infect 1ml LB+Kan. Liquid cultures of PhaP-1 and PhaP-2 were grown for 6 hours at 37°C 220 rpm and then used to prepare glycerol stocks. Remaining liquid cultures were re-filled with 5 ml LB+Kan an grown ON at 37°C 220 rpm for tomorrow MiniPrep. Glycerol stocks of PhaP-1 and PhaP-2 are stored at -80°C in the iGEM 2010 Registry box.

Ligations were heated at 65°C for 5 minutes to inactivate ligase ad then tranformed in E. coli TOP10 home made competent cells. Plates were incubated ON at 37°C (we decided to incubate plates 5 hours longer than usual, because cell growth was already slower for I6).