Difference between revisions of "Team:CU-Boulder/Notebook"
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<img src="https://static.igem.org/mediawiki/2016/f/fa/T--CU-Boulder--19gel.jpeg" style="width:350px;height:458px;margin-right: 70px; padding: 10px 10px 10px 10px; float:right"> | <img src="https://static.igem.org/mediawiki/2016/f/fa/T--CU-Boulder--19gel.jpeg" style="width:350px;height:458px;margin-right: 70px; padding: 10px 10px 10px 10px; float:right"> | ||
| − | <figcaption style = "padding: 10px 10px 10px; margin-top:460px; margin-right:60px; | + | <figcaption style = "padding: 10px 10px 10px; margin-top:460px; margin-right:60px; text-align: center"> Gel.1 - Lane 2: eGFP-Hi 1c3 Lane 3: eGFP-Hi 1c3 Lane 4: ladder Lane 5: eGFP-Lac 1c3 Lane 6: eGFP-Lac 1c3</figcaption> |
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Revision as of 05:12, 10 October 2016
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Notebook
Week 1: 5/8/16-5/14/16
For the first week, the team participated in “iGEM boot camp” in which we quickly went through the procedures and equipment that we would be using throughout the summer. This entailed the procedures for PCR amplification, gel electrophoresis, cloning, and DNA sequencing. We extracted the Eut SMNLK via an agar stab provided from the Schmidt- Dannert lab and PCR amplified the Eut S gene using the biobrick primers and cloned on the high, low, and lac promoters onto the 1C3 backbone prior to the ligation of the Eut S gene onto these modified backbones. The 1C3 backbone was taken from the 2016 iGEM registry. Finally, we ligated the Eut S- high, low, and lac onto PSB1C3, the bio-brick standard backbone.
Week 2: 5/15/16-5/21/16
Performed the ligation of the Eut- SMNLK, provided by the Schmidt- Dannert lab, onto the 6A1 backbone. We transformed the eGFP: Eut C low: 1C3 and eGFP: Eut C lac: 1C3 and Eut SMNLK: 6A1 and sequenced confirmed Eut S low: 1C3 and the eGFP high: 1C3.
Week 3: 5/22/16-5/28/16
Colonies successfully grew of the transformed Eut S low and the Eut S high constructs on the 6A1 backbone. We PCR amplified the Eut SMNLK as well as the Eut S lac and ran overnight ligations of the Eut SMNLK, Eut S lac, Eut S hi, and Eut S lo all onto 6A1. The Eut S lac insert continued to be problematic to clone onto the 6A1 backbone because the insert and the backbone are almost identical in size.
Week 4: 5/29/16-6/4/16
Performed the cotransfoms of the eGFP Eut C low & Eut S low: 6A1, eGFP Eut C low & Eut S high:6A1, eGFP Eut C high & Eut S low: 6A1, eGFP Eut C high & Eut S high: 6A1.
Week 5: 6/5/16-6/11/16
Used the k808000 (pBad modified with an RBS that includes a GFP protein) from the iGEM registry and sequence confirmed our modification to the protein. We continued to try and get Eut S lac onto 6A1 by repeating the ligation of this. We used Electron Microscopy to image all combinations of eGFP and Eut S as well as the inducible pBad with various level of arabinose. We next began to move all fluorescent proteins over to either a Tetracyclin or Kanamyicin backbone because these are compatible with the non-canonical plasmid that we will be using in subsequent weeks.
Week 6: 6/12/16-6/18/16
Sequenced confirmed the pBads eGFPs. EM imaged the co-transforms but with a mid-log growth phase of the cultures. Checked our 5 alpha NEB cells for any phages, which we did not find, and did a genomic PCR amplification of the Eut S.
Week 7: 6/19/16-6/25/16
Ligation of the Neptune onto high and low cassettes and imaged these using electron microscopy. The nep high showed inclusion bodies but the nep low resulted in good images so we decided to use the nep low construct for all further cotransforms to be imaged.
Week 8: 6/26/16-7/2/16
Performed cotransforms of the Eut S high and low both with nep low but failed to see any turbidity in overnight cultures.
Week 9: 7/3/16-7/9/16
Repeated cotransforms of the Eut S high nep low, Eut S low nep lo, Eut S lac nep low, pBad eGPF Eut S lac. Plates grew but overnights continued to fail and no turbidity was seen after days of growth.
Week 10
Realized that the 6A1 and the 1K3 backbone have the same origin of replication which explained why the cotransforms failed continuously. To remedy this, we will move all inserts from the 6A1 backbone onto the 4A5 backbone that is in the iGEM registry and repeat all cotransforms.
Week 11: 7/10/16-7/16/16
We confirmed successful sequencing data from the Eut S low construct and imaged the cotransforms of this with Neptune low, pBad eGFP induced with 0.5% arabinose, and pBad eGFP with no induction.
Week 12: 7/17/16-7/23/16
Made ethanolamine plates to image the endogenous Eut S compartments, but no growth was found initially. We will try these next with the addition of thiamine (vitamin B1) to promote growth of the DH5 alpha NEB cells in the media.
Week 13: 7/24/16-7/30/16
The Eut S lac: 4A5 construct has continued to show insert ligating to the 6A1 backbone on gels as well as not sequencing correctly. We redid the entire construct by repeating the gel insert of the 4A5 backbone as well as the ligation of the Eut S lac insert. Due to the previous failure of the insert onto the 6A1 backbone, we once again employed the piecewise method of cloning the Eut S insert onto the 4A5 followed by a separate cloning of the lac insert onto the backbone. The final construct appeared successful on a gel and was sent in for sequencing.
Week 14: 7/31/16-8/6/16
Sequence data of the Eut S high showed that the Eut S low insert was used accidently and data of the Eut S lac showed little to no priming. New sequence verification primers for each construct were ordered to obtain better results. Eut S lac cotransforms with the eGPF hi: 1K3, eGFP low:1k3, and Neptune low: 1K3 were carried out regardless of sequencing data. The microscopy images were inconclusive as to if the induced overnights formed better localization than the non-induced due to a strong background fluorescence.
Week 15: 8/7/16-8/13/16
Sequenced the Eut S Mid overnights prior to PCR mutagenesis and imaging of this construct. Chose mutations at interfacial positions of the Eut S hexamer to best break apart the compartment without destroying the structure forming compartment entirely, as an intra- mutation would likely do.
Week 16
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Week 17: 8/14/16-8/20/16
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Week 18
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Week 19
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Week 20
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Week 21
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Week 22
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Week 23
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Week 24
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Week 25
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Week 26
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Week 27
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