Team:Wageningen UR/notebook/journal/sensing

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<p>Purified PCR products were treated with the wrong restriction enzymes, resulting in a worthless ligation. PCR was done again to repeat the experiment using correct enzymes.  <br/><br/>
<p>Purified PCR products were treated with the wrong restriction enzymes, resulting in a worthless ligation. PCR was done again to repeat the experiment using correct enzymes.  <br/><br/>
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Performed colony PCR on <i>P. putida</i> with the following primer combinations<br/><br/>
+
Performed colony PCR on <i>P. putida</i> with the following primer combinations:<br/><br/>
Reaction 1: P01_RFC10_pp1262_fwd + P03_RFC10_FAdP_rev<br/>
Reaction 1: P01_RFC10_pp1262_fwd + P03_RFC10_FAdP_rev<br/>
Reaction 2: P01_RFC10_pp1262_fwd + p04_RFC10_FAdP_Delta-RBS_rev<br/>
Reaction 2: P01_RFC10_pp1262_fwd + p04_RFC10_FAdP_Delta-RBS_rev<br/>
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Added 1 ul EcoRI, 1 ul SpeI, 5 ul buffer and MQ to a total of 50 ul. <br/><br/>
Added 1 ul EcoRI, 1 ul SpeI, 5 ul buffer and MQ to a total of 50 ul. <br/><br/>
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Digested for 60 minutes at 37°C for 60 minutes<br/>
+
Digested for 60 minutes at 37°C<br/>
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Denatured for 20 minutes at 80°C for 20 minutes<br/>
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Denatured for 20 minutes at 80°C<br/>
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Put all the parts (digested and undigested) on gel. In J01-J04, no difference in band size was detectable, because the cut off part is only a few bp. The vector obviously showed 1 band uncut and 2 bands cut. <br/><br/>
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Put all the parts (digested and undigested) on gel. In J01-J04, no difference in band size was detectable, because the cut off part is only a few bp. The vector showed 1 band when uncut and 2 bands when cut. <br/><br/>
Added J01-J04 to the cut vector pSB1C3 and ligated: <br/>
Added J01-J04 to the cut vector pSB1C3 and ligated: <br/>
10 minutes at room temperature<br/>
10 minutes at room temperature<br/>
20 minutes denature at 80°C<br/>
20 minutes denature at 80°C<br/>
The ligated parts now contain either mRFP or J01-J04. <br/>
The ligated parts now contain either mRFP or J01-J04. <br/>
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These vectors are used for chemical transformation, using a heatshock of 42°C on chemically competent <i>E. coli</i> cells. After 2 hours of growing on SOC medium, 35 ul and 175 ul is poured onto plates containing Cm antibiotics, then incubated at 37°C. <br/>
+
These vectors are used for chemical transformation, using a heatshock of 42°C on chemically competent <i>E. coli</i> cells. After 1 hours of growing in SOC medium, 35 ul and 175 ul was plated containing Cm antibiotics, then incubated at 37°C. <br/>
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Picked white colonies from all plates, dipped them into PCR mix to check for inserts (same primers as before, to detect the insert itself, p01-P06). Also, every picked colony is grown over night in LB containing Cm antibiotics in the 37°C climate room, 160 rpm rotating machine. <br/>
+
Picked white colonies from all plates, dipped them into PCR mix to check for inserts (same primers as before, to detect the insert itself, p01-P06). Every picked colony was grown over night in LB containing Cm antibiotics in the 37°C climate room rotating at 160 rpm. <br/>
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PCR showed only inserts in 3 of the J01 colonies and 1 of the J03 colonies. Both strains are grown overnight an additional time, to make stock. <br/>
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PCR showed only inserts in 3 of the J01 colonies and 1 of the J03 colonies. Both strains are grown overnight again for a glycerol stock. <br/>
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The J03 insert seemed to be mRFP, since it was completely red in the morning. J01 had grown normally and was made into a glycerol stock. <br/>
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The J03 insert seemed to be mRFP, since the colony expressed red color. J01 was made into a glycerol stock. <br/>
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Picked different colonies for J02-J04 from the same plates and tried to find the right insert again. Strains grown in LB medium again. PCR gave unclear results, so repeated the PCR in the morning, with only the non-red strains: Only 1 strain of J04 had the insert. <br/>
+
Picked different colonies for J02-J04 from the same plates and performed colony PCR. Strains were grown in LB medium. PCR gave an inconclusiv result. PCR was repeated in the morning, with the non-red strains: Only 1 strain of J04 contained the insert. <br/>
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Used miniprep to isolate the plasmids of the successful J01 and J04 strains. After nanodropping, they had a concentration of 110ng/ul and 85ng/ul, respectively. Both samples are sent off for sequencing. <br/><br/>
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Used miniprep to isolate the plasmids of the successful J01 and J04 strains.  
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PCR is performed on putida again, to obtain J02 and J03 once more and try to isolate those as well for transformation purposes. <br/><br/>
+
 
 +
Nanodropping showed a concentration of 110ng/ul and 85ng/ul, respectively. Both samples are sent for sequencing. <br/><br/>
 +
PCR is performed on putida, to obtain J02 and J03 once more and try to isolate those as well for transformation purposes. <br/><br/>
Reaction 1: P01_RFC10_pp1262_fwd + p04_RFC10_FAdP_Delta-RBS_rev<br/>
Reaction 1: P01_RFC10_pp1262_fwd + p04_RFC10_FAdP_Delta-RBS_rev<br/>
Reaction 2: P01_RFC10_pp1262_fwd + p05_RFC10_FAdP_Delta-RBS2_rev<br/>
Reaction 2: P01_RFC10_pp1262_fwd + p05_RFC10_FAdP_Delta-RBS2_rev<br/>
   
   
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Results will be put on gel<br/><br/>
+
Reaction 1 and 2 will be put on gel<br/><br/>
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Inoculated 5ml + 5ul Cm with the successful J04 strain to make glycerol stock. Put in the 37°C climate room at 160 RPM. <br/>
+
Inoculated 5ml + 5ul Cm with the successful J04 strain to make glycerol stock. Incubation at 37°C and 160 RPM. <br/>
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J02 and J03 were still vague bands. The products were ligated and transformed into<i> E. coli</i>. However, no transformations took place. <br/>
+
J02 and J03 showed vague bands. The products were ligated and transformed into<i> E. coli</i>. Transformation was not successful. <br/>
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The sequences of BBa_J01 and BBa_J04 were returned. J01 was indeed the right insert of the pp1262 and intergenic region (including RBS). J04 was as well, yet there was a mistake in the promoter region, probably leading from a mistake by the company in the primer design. <br/>
+
The sequences of BBa_J01 and BBa_J04 showed that J01 was the right insert of pp1262 and intergenic region (including RBS). J04 had the right sequence except for an inconsistency in the promoter region. This is probably a result of a mistake in the primer design. <br/>
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Cut the isolated BBa_J01 and BBa_J04 vectors with EcoRI and SpeI. Also added these restriction enzymes to BBa_J23100, a reporter biobrick, with its active promoter between E & S. By inserting the J01 or J04 promoter, the reporter should in theory only work if the added promoter is active. By using alkaline phosphatase, the ability to self-ligate became much smaller. <br/><br/>
+
Cut the isolated BBa_J01 and BBa_J04 vectors with EcoRI and SpeI. Added these restriction enzymes to BBa_J23100, a biobrick containing a reporter gene, with its active promoter between E & S. By inserting the J01 or J04 promoter, the reporter should in theory only work if the added promoter is active. By using alkaline phosphatase, the chance for self-ligation became much smaller. <br/><br/>
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After using the ligated products for transformation, many white colonies were present. 4 of each is picked, PCR’ed (with VF2 and VR primers) and grown overnight in 5ml LB medium + Amp. The PCR showed inserts in 1 of each colony (1.2 and 4.1). Also made stocks of these two transformed strains. <br/><br/>
+
After using the ligated products for transformation, many white colonies formed. 4 of each were picked, PCR’ed (with VF2 and VR primers) and grown overnight in 5ml LB medium + Amp. The PCR showed inserts in 1 of each colony (1.2 and 4.1). Also made stocks of these two transformed strains. <br/><br/>
Performed the following PCR<br/>
Performed the following PCR<br/>
p01 + p04, Q5, J01+J23100<br/>
p01 + p04, Q5, J01+J23100<br/>

Latest revision as of 02:19, 18 October 2014

Wageningen UR iGEM 2014

 

 

Fungal sensing journal


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