Team:Bielefeld-Germany/Labjournal/week18

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==Week 18 (08/27 - 09/02/12)==
 
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===Monday August 27th===
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* '''Team ''A. thaliana'' laccase:''' Today we finally had a less stressful day, so that we had the time to fulfill our ''A. thaliana'' laccase mission. Since the RNA isolation was not as easy as expected and the PCRs weren´t successful so far, we washed our cDNA and gave this project a last try. Today´s PCR was with actin to check the quality of our cDNA (remember last time there weren´t even any actin bands).
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The set up was
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* '''Team Cultivation & Purification:'''
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** We made a buffer exchange of the promising''E.coli'' laccase.
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** We cultivated ''E.coli'' KRX with plasmids containing laccases from ''E.coli'', ''B.pumilus'', ''T.thermophilus'', ''B.halodurans'' and ''X.campestris'' in 1 L flasks without baffles. As references ''E.coli'' KRX without plasmid and with plasmid containing Ligase A were used -->Settings: Use of Autoinduction medium, final volume: 250 mL, 60 µg/mL chloramphenicol, 37°C, 120 rpm for 12 h
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** Cells were harvested and then disrupted in equilibration buffer via sonication. After centrifugation the supernatant was purified by using the HisTrap column
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** A new preculture was made for the next cultivation
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===Tuesday August 28th===
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===Wednesday August 29th===
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* '''Team Cellulose Binding Domain:'''
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Isolation of CBDcex+GFP VI and CBDcex X+XII
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Restriktion of them with NotI showed right bands (about 400 bp for CBDcex and 1200 bp for CBDcex+GFP)
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* '''Team Site Directed Mutagenesis:'''
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New Primers for X.campestris arrived.
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<ul style="list-style-type:none">
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<li><a href="https://2012.igem.org/Team:Bielefeld-Germany/Labjournal/Starting"><strong>Prologue</strong></a></li>
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                <li><a href="https://2012.igem.org/Team:Bielefeld-Germany/Labjournal/week1"><strong>Week 1</strong></a></li>
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                <li><a href="https://2012.igem.org/Team:Bielefeld-Germany/Labjournal/week2"><strong>Week 2</strong></a></li>
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<li><a href="https://2012.igem.org/Team:Bielefeld-Germany/Labjournal/week3"><strong>Week 3</strong></a></li>
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<li><a href="https://2012.igem.org/Team:Bielefeld-Germany/Labjournal/week4"><strong>Week 4</strong></a></li>
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<li><a href="https://2012.igem.org/Team:Bielefeld-Germany/Labjournal/week5"><strong>Week 5</strong></a></li>
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<li><a href="https://2012.igem.org/Team:Bielefeld-Germany/Labjournal/week6"><strong>Week 6</strong></a></li>
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<li><a href="https://2012.igem.org/Team:Bielefeld-Germany/Labjournal/week7"><strong>Week 7</strong></a></li>
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<li><a href="https://2012.igem.org/Team:Bielefeld-Germany/Labjournal/week8"><strong>Week 8</strong></a></li>
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<li><a href="https://2012.igem.org/Team:Bielefeld-Germany/Labjournal/week9"><strong>Week 9</strong></a></li>
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<li><a href="https://2012.igem.org/Team:Bielefeld-Germany/Labjournal/week10"><strong>Week 10</strong></a></li>
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<li><a href="https://2012.igem.org/Team:Bielefeld-Germany/Labjournal/week11"><strong>Week 11</strong></a></li>
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<li><a href="https://2012.igem.org/Team:Bielefeld-Germany/Labjournal/week12"><strong>Week 12</strong></a></li>
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<li><a href="https://2012.igem.org/Team:Bielefeld-Germany/Labjournal/week13"><strong>Week 13</strong></a></li>
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<li><a href="https://2012.igem.org/Team:Bielefeld-Germany/Labjournal/week14"><strong>Week 14</strong></a></li>
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<li><a href="https://2012.igem.org/Team:Bielefeld-Germany/Labjournal/week15"><strong>Week 15</strong></a></li>
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<li><a href="https://2012.igem.org/Team:Bielefeld-Germany/Labjournal/week16"><strong>Week 16</strong></a></li>
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<li><a href="https://2012.igem.org/Team:Bielefeld-Germany/Labjournal/week17"><strong>Week 17</strong></a></li>
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<li><a href="https://2012.igem.org/Team:Bielefeld-Germany/Labjournal/week18"><strong>Week 18</strong></a></li>
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<li><a href="https://2012.igem.org/Team:Bielefeld-Germany/Labjournal/week19"><strong>Week 19</strong></a></li>
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<li><a href="https://2012.igem.org/Team:Bielefeld-Germany/Labjournal/week20"><strong>Week 20</strong></a></li>
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<li><a href="https://2012.igem.org/Team:Bielefeld-Germany/Labjournal/week21"><strong>Week 21</strong></a></li>
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<li><a href="https://2012.igem.org/Team:Bielefeld-Germany/Labjournal/week22"><strong>Week 22</strong></a></li>
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==Week 18 (08/27 - 09/02/12)==
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===Thursday August 30th===
 
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===Friday August 31th===
 
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===Saturday September 1st===
 
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===Sunday September 2nd===
 
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* '''Team Activity Tests:''' This week we had Team Modeling over and they told us about their concerns. To continue modeling they wanted to have a look at the activity of our laccase from ''T. versicolor'' but with different ABTS concentrations. Especially the were interested in the first time points after adding ABTS. This should give them enough information to calculate the enzyme activity. We didn't want to wait, so we started immediately with our standard activity test. Our tested ABTS concentrations were: 0.5µl, 1µl, 2µl, 4µl and 8µl. We got nice activity curves but also noticed, that the activity saturated quickly and therefore the initial activity of our laccase can not be measured accurately. Of course Team Modeling got our data just in time, but we also want to start new activity tests with half of the amount of laccase. So we are still trying to keep our lovely Team Modeling satisfied.
 
{{Team:Bielefeld/Sponsoren}}
{{Team:Bielefeld/Sponsoren}}

Latest revision as of 21:29, 25 September 2012


Week 18 (08/27 - 09/02/12)

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Fifteen students from different fields of study from the Bielefeld University aspired to complete a project called TOXIC COMPOUNDS IN NATURAL WATER - A CASE FOR LACCASE. In his Wiki we document our achievements and our approach.

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