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Template:Team:UC Berkeley/Notebook/BX notes
From 2008.igem.org
Sixpi 22:39, 7 July 2008 (UTC)
Sunday:
Sixpi 23:33, 5 July 2008 (UTC)
Saturday: Came in to find out that a large number of our transfers gave colonies, which meant Jin and Christie set up 200 colony PCRs yesterday! All but 4 of our basic part amplifications grew, so I minipreped the cultures we have so we can hopefully finish off the rest of the transfers tomorrow.
Friday: July 4th, did not come in.
Thursday: All 48 transfers from Wednesday failed. We think it might be because we dried the magnetic beads for too long during the purification step. Since time is of the essence, we started the rest of the transfers anyways, which amounted to 2 96 well plates worth. We also started to redo some of the failed transfers, but we have run out of DNA from some of our basic parts, so we also set up transformations to amplify the small amount of DNA we have left.
Wednesday: Reduced tree generator inefficiency by breaking down our list of parts into 3 sets, and running the program on each set separately. We will probably have some overlapping parts between the sets, but this can't be easily avoided without rewriting the entire program. We started 48 transfers as a small scale test before going up to full scale assembly.
Tuesday: Tests of our assembly vectors gave positive results, so we can begin transfers now. However, Jin still hasn't finished finalizing the list of composite parts we wish to attempt to make, so we did not actually begin today. Also, the assembly tree generator program that we have seems to give us inefficient trees, and the inefficiency grows as the size of the input grows, so we need to figure out some solution to this problem.
Sixpi 16:54, 1 July 2008 (UTC)
Monday: Since there were no colonies on the plates from yesterday, the vectors were not validated and we couldn't start the assembly process today. I set up another batch of tests for the vectors, this time with the real inserts that we will want in the respective vectors, which will give us K112202 in AC, K112118 in CA, K112704 in AK, K112109 in KA, K112709 in CK, and K112202 in KC.
Sunday: I asked Madhvi to move my plates down to the fridge for me. She didn't see any colonies.
Saturday: I didn't actually get to set up my transformations yesterday since we made time to plan out the next few weeks, so I came in today to test the vectors I finished preparing yesterday. I used some old dud inserts that had point mutations or deletions: K112311_1 in AC, K112313 in CA, K112316 in AK, K112311 in KA, K112201 in CK, and K112204 in KC.
Sixpi 21:10, 28 June 2008 (UTC)
Friday: Colony PCR of transformation from Thursday confirmed that the protocols were working, although the first batch of vectors was too dilute, and there were few colonies. The vector I prepared today were run on a traditional agarose gel and the bands were cut out, and I eluted with 50 uL of water in the final step of the zymo cleanup. Hopefully this will make the second batch more concentrated and the transformations I set up today work better.
We also discussed the upcoming assembly process, and who will do what job. It looks like we'll all be very busy for the next 2 or 3 weeks.
Sixpi 17:13, 27 June 2008 (UTC)
Thursday: Got sequences for my last part back (K112013), sequences were correct, so I am done with my basic parts. PCR for assembly vectors worked beautifully, retried ligating dud basic parts into assembly vectors and transforming.
Wednesday: Minimeeting, set up transformations for testing the assembly vectors. Set up PCR to make more assembly vectors, as first batch did not turn out very well.
Tuesday: Picked colonies for transformation yesterday.
Monday: Got sequencing data back, which was wrong yet again, so I restarted K112013 from PCR, and finished the transformation.
Sixpi 22:46, 22 June 2008 (UTC)
Sunday: Finished minipreps for Aron and Molly, also picked colonies for Madhvi. Reorganized E. coli plates, and restructured DNA stock database.
Saturday: Day off. Madhvi did miniprep for me.
Friday: Sequencing data came back, was scrambled, figured out that columns A and H, B and G, C and F, D and E got swapped, and was able to analyze results. Got a bad read again for K112013, so picked another colony and hoped it worked, otherwise I'll have to start over from PCR.
Thursday: Finished miniprep for two colonies from yesterday, sent DNA off for sequencing. Adobe Illustrator tutorial today.
Sixpi 22:45, 18 June 2008 (UTC)
Wednesday: Made more digested pBca1256 vector. Sequencing data has come in for K112000, K112001,K112002, K112004, K112013, and K112015. 4 of the 6 were perfect reads, but 2 were not, so I repicked colonies for those two parts, and will do a miniprep tomorrow.
Tuesday: Miniprep on the colonies I picked yesterday using the Qiagen miniprep kit.
Monday: Picked second colonies from the plates that had bad sequencing data, and grew them up in 3 ml of 2xYT media.
Sixpi 04:46, 16 June 2008 (UTC)
Sunday: I finished my DNA sequence analysis:
K112000~K112017 6.15.2008 Sequence Analysis
BX001:K112000 - Sequencing data totally off.
BX002:K112001 - One possible point mutation at bp 685, T that should be a G, but chromatogram data is low, so unsure. The mutation is significant, as it changes a Gly to a stop codon.
BX003:K112002 - Parent vector with mutations.
BX004:K112003 - Perfect match.
BX005:K112004 - One possible point mutation at bp 451, changing a Tyr to a Ser. Also, read data did not cover entire part.
BX006:K112005 - Perfect match.
BX007:K112006 - Perfect match.
BX008:K112007 - Perfect match.
BX009:K112008 - Perfect match.
BX010:K112009 - Perfect match.
BX011:K112010 - Perfect match.
BX012:K112011 - Perfect match.
BX013:K112012 - Perfect match.
BX014:K112013 - Low read quality.
BX015:K112014 - Perfect match.
BX016:K112015 - Point mutation at bp 103, changing a Ile to a Thr.
BX017:K112016 - Perfect match.
BX018:K112017 - Perfect match.
Saturday: I came in to do a miniprep of the bacteria I picked yesterday using the Agencourt miniprep kit. This kit uses magnetic beads that bind dna to purify dna. The dna was sent out for sequencing analysis.
Friday: I spent a few hours waiting for our colonies to grow big enouogh to pick. When the colonies were ready, we made 2xYT media, and grew the colonies in 1 ml of media in a 96 well plate.
Sixpi 06:35, 13 June 2008 (UTC)
We had our first mini-meeting today, where we talked about what we have done for the last two weeks(somewhat), and about various subjects related to synthetic biology(more so). The meeting was interesting and not painful.
After the meeting, I went down to the lab to take out our PCR product from the machine. I then purified the product using clonewell gels, digested, cleaned up the reaction with the zymo kit, and the started the ligation. I then had to leave, so Molly will finish the transformation for me. In return, I'll do her mini-preps on Saturday.
Sixpi 22:04, 11 June 2008 (UTC)
Our oligos arrived today(yay!). We started making our basic parts. I made a mistake while making the master mix - I didn't know the dNTPs were at 10 mM instead of 2 mM, so I added 5 times as much dNTPs than needed. This means our PCR reaction has a good chance of failing, since dNTPs bind Mg, which the DNA polymerase needs in order to copy DNA. The extra dNTPs will probably outcompete the polymerase. No DNA was seen after running the eGel, so we set up the PCR reaction again, this time adding the correct amount of dNTPs.
Yesterday I poured more plates; 1 liter of Amp/Kan, 1 liter of Amp/Cam, and 1 liter of Cam/Kan.
Sixpi 23:31, 9 June 2008 (UTC)
Today I poured plates. There were 3 liters of LB/agar media, to which I added Spe. The 3 liters made 150 plates.
Sixpi 00:02, 5 June 2008 (UTC)
In our demos this morning we transformed bacteria, plated them, picked colonies, grew them up, and extracted DNA. The afternoon was taken up by designing oligos for the basic parts will start making next week(hopefully).
Sixpi 05:12, 4 June 2008 (UTC)
Today we continued our part making demo. Yesterday we set up the PCR reaction, and today we cleaned up the PCR, set up the digestion, and also ran an analytical gel of the PCR product.
