SBB09Ntbk-VaiUmesh: Difference between revisions
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==[[User:JCAnderson|JCAnderson]] 13:51, 2 February 2009 (EST)== | ==[[User:JCAnderson|JCAnderson]] 13:51, 2 February 2009 (EST)== | ||
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- N and C termini constructs were not verified to be correct | - N and C termini constructs were not verified to be correct | ||
- But only the PCR was set up such that if the first two constructs were wrong, only the SOE-ing PCR step would be a waste | - But only the PCR was set up such that if the first two constructs were wrong, only the SOE-ing PCR step would be a waste | ||
</pre> | |||
=='''[[User:Vaibhavi Umesh|Vaibhavi Umesh]] 4 March 2009 (EST)''':== | |||
<pre> | |||
Did not come into lab - Sick | |||
</pre> | |||
=='''[[User:Vaibhavi Umesh|Vaibhavi Umesh]] 6 March 2009 (EST)''':== | |||
<pre> | |||
- Today was a short day: | |||
- Sequencing results came in - they worked! The first two constructs of the N and C termini were correct | |||
</pre> | |||
=='''[[User:Vaibhavi Umesh|Vaibhavi Umesh]] 9 March 2009 (EST)''':== | |||
<pre> | |||
- Since the first two constructs were verified to be correct, I proceeded with SOE-ing PCR | |||
- Performed a zymo clean up of the PCR | |||
- Did a restriction digest | |||
- Ran the samples on a gel and gel purified the required fragments (cut out the bands with a razor before purification) | |||
- Once fragments 'A' and 'B' were obtained (check construction file), a second PCR was set up with the SOE-ing oligos on A+B | |||
</pre> | |||
=='''[[User:Vaibhavi Umesh|Vaibhavi Umesh]] 11 March 2009 (EST)''':== | |||
<pre> | |||
- The PCR with A+B was purified and digested with EcoRI and BamHI | |||
- Ligation was set up | |||
- The construct was transformed into DH10B cells | |||
</pre> | |||
=='''[[User:Vaibhavi Umesh|Vaibhavi Umesh]] 13 March 2009 (EST)''':== | |||
<pre> | |||
- Today was a very short day: | |||
- I picked a colony from the plates I had transformed and put it into the Shaker | |||
- (Gabe said he would monitor the test tubes + miniprep my samples over the weekend) | |||
- Plan - To send the samples in for sequencing first thing on Monday | |||
</pre> | |||
=='''[[User:Vaibhavi Umesh|Vaibhavi Umesh]] 16 March 2009 (EST)''':== | |||
<pre> | |||
- Sent sample in for sequencing. Nothing left to do except wait to see if it worked | |||
- If it didnt, trouble shooting will begin! | |||
</pre> | |||
=='''[[User:Vaibhavi Umesh|Vaibhavi Umesh]] 18 March 2009 (EST)''':== | |||
<pre> | |||
- Sequencing came in: Clone was correct!!! | |||
- The circularly permuted OmpX part (eCPX) was successfully made | |||
</pre> | |||
=='''[[User:Vaibhavi Umesh|Vaibhavi Umesh]] 20 April 2009 (EST)''':== | |||
<pre> | |||
'''Assigned Assay - Cell-cell adhesion''' | |||
Plan: | |||
- To transform RFP into DH10B cells | |||
- These cels would be plated on Spec plates' | |||
- Colonies would be picked from these plates and cultures grown - they would be co-transformed with the IILK and AG4 plasmids | |||
- We will also make clones without the RFP plasmids | |||
</pre> | |||
=='''[[User:Vaibhavi Umesh|Vaibhavi Umesh]] 21 April 2009 (EST)''':== | |||
<pre> | |||
Jennifer did the following: | |||
- Picked colonies into 24 well plate | |||
- Used 3mL LB total | |||
pBca9495CA-(M10218-M10225) | |||
- A1 --> D1 | |||
- A2 --> D2 | |||
pBca9495CA-(M10210-M10217) | |||
- A3 --> D3 | |||
- A4 --> D4 | |||
pBca9495CA-Bca1363 | |||
- A5 | |||
pBca1600-Bca1144 (RFP plasmid) | |||
- B5 | |||
</pre> | |||
=='''[[User:Vaibhavi Umesh|Vaibhavi Umesh]] 22 April 2009 (EST)''':== | |||
<pre> | |||
- Performed 1:10 Dilutions | |||
- 96-well plate: 1 mL of LB (with or without arabinose) and 100uL of saturated cell culture. | |||
- In the V-bottom plate: 300uL of LB (with or without arabinose) and 30uL of saturated cell culture. | |||
- The V-bottom plate would allow us to qualitatively assess whether any flocculation occurred. | |||
- The 96-well plate was used because RFP measurements could easily be made using the Tecan. | |||
</pre> | |||
=='''[[User:Vaibhavi Umesh|Vaibhavi Umesh]] 27 April 2009 (EST)''':== | |||
<pre> | |||
- Due to inconclusive results, certain parts were re-transformed. | |||
- The idea of co-transforming with RFP was not used. | |||
- Instead, it was decided that sodium hydroxide could be used to get rid of cell clumps from flocculation | |||
- Breaking up the clumps was necessary to obtain an accurate concentration of cells. | |||
</pre> | </pre> |
Revision as of 12:48, 19 May 2009
JCAnderson 13:51, 2 February 2009 (EST)
Today I learned how to change a wiki page and made my pages.
Vaibhavi Umesh 2 February 2009 (EST):
- Recieved project ball --> OmpX - Learned how to change a wiki page - Made/edited personal page Things to do - Make wiki notebook page - Make personal page - Read about circularly permuted plasmids - Read paper about OmpX - Begin working on construction file to design OmpX basic part
*Vaibhavi Umesh 4 February 2009 (EST):
- Everyone in class got Project Balls <br> - Worked on Construction files for OmpX
Vaibhavi Umesh 6 February 2009 (EST):
- Worked on designing oligos and the construction file for the project parts
Vaibhavi Umesh 9 February 2009 (EST):
- Worked on designing oligos and the construction file for the project parts - This is what I designed based on reading the paper Chris had suggested:
1) Native N-terminus - OmpX {N.ompX!} PCR VU015F/VU016R on OmpX (529 bp, EcoRI/BamHI) Sub into pBca9145-Bca1144#5 (EcoRI/BamHI, 2057+910, L) Product is M10012 {N.ompX>} ------------------------------------------- VU015F Construction of OmpX N term part ccaaaGAATTCatgAGATCTatgaaaaaaattgcatgtctttcagcactggccgc (40% GC content, length = 55 bp) VU016R Construction of OmpX N term part gcaaaGGATCCttaaccggcaatccaggtgcctacg (56% GC content, length = 36 bp) --------- 2) Native C-terminus - OmpX { AGATCTgttggttaccgcttctaaGGATCC EIPCR VU017F /VU018R on pBca9145-Bca1144#5 (2090 bp, BglII) Product is M10013 { -------------------------------------------- VU017F EIPCR construction of {C.OmpX>} ccataAGATCTgttggttaccgcttctaaGGATCCtaaCTCGAGctgcag VU018R Reverse BglII oligo for His6 EIPCR CCAATAGATCTcatgaattccagaaatc ------------- Assemble the complete part by SOEing Criteria for Linker between N and C terminus: From the paper, I was able to extract the following information: * The linker should be 6 peptides long * The first peptide should be Glycine * The third and sixth positions were restricted to R/K/S/H/Q/N * The substitution A165V resulted in improved display scaffolds * The substitution G166S resulted in improved display scaffolds * The display enhancing substitutions A165V and G166S are located immediately upstream of the native C-terminus of OmpX * The remaining positions (2 and 4) should be randomized keeping all this in mind I thought the following linker would be best suited: GSKNVS which has a nucleotide sequence of: GGTTCTAAAAATGTTTCT New N junction gttggttaccgcttc New C junction aaaaaaattgcatgtctttc Forward Oligo: Linker.C junction GGTTCTAAAAATGTTTCTaaaaaaattgcatgtctttc Reverse Oligo: N junction.Linker gttggttaccgcttcGGTTCTAAAAATGTTTCT Reverse Complement: AGAAACATTTTTAGAACCgaagcggtaaccaac PCR VU019F /VU016R on M10012 (527 bp, gp A) PCR VU017F/VU020R on M10013 (44 bp, gp B) PCR VU021F /VU016R on gp B + gp A (553 bp, EcoRI/BamHI) Sub into pBca9145-Bca1144#5 (EcoRI/BamHI, 2057+910, L) Product is M10014 { ------------------------- VU019F Forward SOEing oligo for cpOmpX GGTTCTAAAAATGTTTCTaaaaaaattgcatgtctttc VU020R Reverse SOEing oligo for cpOmpX AGAAACATTTTTAGAACCgaagcggtaaccaac VU021F Forward construction of C.OmpX ccataAGATCTgttggttaccgcttcGGTTCTAAAAATGTTTCT Note: VU021F had to be used instead of re-using VU017 because VU017 was used to construct {C.OmpX>} through EIPCR
Vaibhavi Umesh 10 February 2009 (EST):
- Project parts were due --> Contruction files - Oligos will be ordered this week - Chris said he would go through all the construction files and make corrections as necessary.
Vaibhavi Umesh 11 February 2009 (EST):
- Chris corrected the construction files:
1) Native C-terminal portion of ompX {N.ompX} PCR Ovu015/Ovu016 on MG1655 gen. (322bp, EcoRI/BamHI) Sub into pBca9145-Bca1144#5 (EcoRI/BamHI, L) Product is pBca9145-M10012 {N.cpx} ----------------------------------------------------------- Ovu015 Construction of OmpX N term part ctagaGAATTCatgAGATCTGGTCAGTCTggtgactacaacaaaaaccag Ovu016 Construction of OmpX N term part gacaaGGATCCgaagcggtaaccaacagaggcaatccaggtgcctac 2) Native N-terminal portion of ompX {C.ompX} PCR Ovu017/Ovu018 on MG1655 gen. (196bp, EcoRI/BamHI) Sub into pBca9145-Bca1144#5 (EcoRI/BamHI, L) Product is pBca9145-M10013 {C.cpx} ----------------------------------------------------------- Ovu017 Construction of OmpX C term part ctagaGAATTCatgAGATCTgcgacttctactgtaactgg Ovu018 Construction of OmpX C term part gacaaGGATCCttaagagcttgcagtacggcttttctcgg 3) SOEing assembly of eCPX PCR Ovu015/Ovu019 on pBca9145-M10012 (334bp, EcoRI/BamHI = A) PCR Ovu020/Ovu018 on pBca9145-M10013 (194bp, EcoRI/BamHI = B) PCR Ovu015/Ovu018 on A+B (505bp, EcoRI/BamHI) Sub into pBca9145-Bca1144#5 (EcoRI/BamHI, L) Product is pBca9495KC-M10014 {<eCPX!} ----------------------------------------------------------- Ovu019 SOEing of eCPX gtcgcTTTAGACTGTTTAGATCCgaagcggtaaccaacag Ovu020 SOEing of eCPX GGATCTAAACAGTCTAAAgcgacttctactgtaactgg
Vaibhavi Umesh 18 February 2009 (EST):
- Started Project! - Oligos came in - diluted all of them - Set up a PCR reaction
Vaibhavi Umesh 23 February 2009 (EST):
- Ran an analytical gel to make sure pcr worked - Did a zymo clean up on the PCR product to obtain the required fragments - Digested the fragments with EcoRI and BamHI (according to the construction file) - Cleaned up the digest * Did not have time to finish ligating and transforming. So, Digests were stored in the freezer until the next lab period
Vaibhavi Umesh 25 February 2009 (EST):
- Ligated the digests from the last lab period - Feb 23rd - Transformed them into DH10B cells and put the plates in the incubator
Vaibhavi Umesh 27 February 2009 (EST):
- Colonies were picked and grown out for us over the weekend - Today: Miniprepping!!! - I had a total of 4 miniprep samples: 2 of each kind (The N and C termini) - After miniprepping, a restriction mapping was performed to see if the samples should even be sent to the sequencing facility. - Restriction mapping: Worked! - Did not have time to send the samples for sequencing today - Will do them on the next lab period
Vaibhavi Umesh 2 March 2009 (EST):
- Samples were sent in for sequencing - However, to avoid wasting time, the 3rd part of the construction file - SOE-ing PCR was started today - N and C termini constructs were not verified to be correct - But only the PCR was set up such that if the first two constructs were wrong, only the SOE-ing PCR step would be a waste
Vaibhavi Umesh 4 March 2009 (EST):
Did not come into lab - Sick
Vaibhavi Umesh 6 March 2009 (EST):
- Today was a short day: - Sequencing results came in - they worked! The first two constructs of the N and C termini were correct
Vaibhavi Umesh 9 March 2009 (EST):
- Since the first two constructs were verified to be correct, I proceeded with SOE-ing PCR - Performed a zymo clean up of the PCR - Did a restriction digest - Ran the samples on a gel and gel purified the required fragments (cut out the bands with a razor before purification) - Once fragments 'A' and 'B' were obtained (check construction file), a second PCR was set up with the SOE-ing oligos on A+B
Vaibhavi Umesh 11 March 2009 (EST):
- The PCR with A+B was purified and digested with EcoRI and BamHI - Ligation was set up - The construct was transformed into DH10B cells
Vaibhavi Umesh 13 March 2009 (EST):
- Today was a very short day: - I picked a colony from the plates I had transformed and put it into the Shaker - (Gabe said he would monitor the test tubes + miniprep my samples over the weekend) - Plan - To send the samples in for sequencing first thing on Monday
Vaibhavi Umesh 16 March 2009 (EST):
- Sent sample in for sequencing. Nothing left to do except wait to see if it worked - If it didnt, trouble shooting will begin!
Vaibhavi Umesh 18 March 2009 (EST):
- Sequencing came in: Clone was correct!!! - The circularly permuted OmpX part (eCPX) was successfully made
Vaibhavi Umesh 20 April 2009 (EST):
'''Assigned Assay - Cell-cell adhesion''' Plan: - To transform RFP into DH10B cells - These cels would be plated on Spec plates' - Colonies would be picked from these plates and cultures grown - they would be co-transformed with the IILK and AG4 plasmids - We will also make clones without the RFP plasmids
Vaibhavi Umesh 21 April 2009 (EST):
Jennifer did the following: - Picked colonies into 24 well plate - Used 3mL LB total pBca9495CA-(M10218-M10225) - A1 --> D1 - A2 --> D2 pBca9495CA-(M10210-M10217) - A3 --> D3 - A4 --> D4 pBca9495CA-Bca1363 - A5 pBca1600-Bca1144 (RFP plasmid) - B5
Vaibhavi Umesh 22 April 2009 (EST):
- Performed 1:10 Dilutions - 96-well plate: 1 mL of LB (with or without arabinose) and 100uL of saturated cell culture. - In the V-bottom plate: 300uL of LB (with or without arabinose) and 30uL of saturated cell culture. - The V-bottom plate would allow us to qualitatively assess whether any flocculation occurred. - The 96-well plate was used because RFP measurements could easily be made using the Tecan.
Vaibhavi Umesh 27 April 2009 (EST):
- Due to inconclusive results, certain parts were re-transformed. - The idea of co-transforming with RFP was not used. - Instead, it was decided that sodium hydroxide could be used to get rid of cell clumps from flocculation - Breaking up the clumps was necessary to obtain an accurate concentration of cells.