Team:Stockholm/13 September 2010

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Andreas

Preparation of Top10 chemically competent cells

None of the clones streaked onto the Amp 100 plate (11/9) grew, indicating no AmpR contamination in cells. One of the ON cultures were therefore selected for preparation of competent cells.

Procedures according to protocol. Growth conditions changed to 25 °C, 220 rpm (OD600 reached after ≈6 h).

A 100 μl aliquot was divided and spread onto Amp 100, Cm 25 and Km 50 plates to verify that they were not contaminated.

Cloning of N-CPPs into pSB1C3

Sequencing results from 8/9 returned.

  • pSB1C3.nCPP 3 (failed)
  • pSB1C3.nCPP 4 (fasta)
  • pSB1C3.nCPP 6 (fasta)
  • pSB1C3.nCPP 7 (fasta)
  • pSB1C3.nCPP 8 (fasta)

Blastn alignments against N-Tra10, N-TAT and N-LMWP indicated successful cloning of N-Tra10 (clone 7) and N-TAT (clone 4).

Transformations

Since pSB1C3.N-TAT and pSB1C3.N-Tra10 colony samples were accidentally discarded, prepared plasmids were used to transform new cells in order to prepare glycerol stocks.

Standard transformation with 1 μl plasmid DNA.

  • pSB1C3.N-TAT
  • pSB1C3.N-Tra10

Sequencing

DNA concentrations of 11/9 plasmid preps were measured by Mimmi and samples were sent for sequencing for isolation of N-LMWP.

  • pSB1C3.nCCP 2: ABS0045 B92
  • pSB1C3.nCCP 3: ABS0045 B93
  • pSB1C3.nCCP 5: ABS0045 B94
  • pSB1C3.nCCP 8: ABS0045 B95
  • pSB1C3.nCCP 9: ABS0045 B96
  • pSB1C3.nCCP 10: ABS0045 B97
  • pSB1C3.nCCP 11: ABS0045 B98
  • pSB1C3.nCCP 12: ABS0045 B99



Mimmi

MITF-M

Site-Directed Mutagenesis control

mix (µl) Conditions
DNA 20 time °C
10x buffer 3 3h 37
sH2O 5
XbaI 1
AgeI 1
tot 30µl


Gel

2010-09-13 MITF SD1.jpg
well sample
1 ladder
2 MITF-col 1
3 MITF-col 1 cut X+A
4 MITF-col 2
5 MITF-col 2 cut X+A
6 MITF-col 3
7 MITF-col 3 cut X+A
8 MITF-col 4
9 MITF-col 4 cut X+A
10 MITF-M
11 MITF-M cut X+A
  • Should have saved more original MITF (stupid!)
    • Make new MITF-M

RBS

plasmid prep.

  • Follow original protocol
    • Wash 2 times with DNA wash buffer
    • Eluate in 50µl
    • Eluate 2 times with the same sH2O

DNA conc. RBS34a ~42ng/µl -> ~60ng/µl RBS34b ~41ng/µl -> ~60ng/µl





The Faculty of Science at Stockholm University Swedish Vitiligo association (Svenska Vitiligoförbundet) Geneious Fermentas/ Sigma-Aldrich/