Team:Marburg/Labbook/Curli

15/04/28

GXL-PCR

Used primers:
Promotor (plac): IC1 + IC2
csgA: IC3 + IC4
RBS + mCherry: IC5 + IC6
Backbone: IC7 + IC8


15/05/07

Resuspending of speedvaced gel extracted plac, mCherry, Curly

Nutrinity
Figure 1: Nanodrop-Curve of plac, mCherry, Curly

high values (100g/µl-250ng/µl) but weird curves

CPEC


15/05/08

Gel of CEPC reaction

Nutrinity
Figure 2: CPEC of plac, mCherry, Curly

No clear band visible, with a lot of imagination there is a band, which would be right in size -> transform anyway

Transformation of CEPC Curly

--> next day: colonies are visible


15/06/08

Overnightcultures

W3110 Δcsagα cells in 1 mL LB-Media
eCsgAα-Cells in 1 mL LB-Cm-Media


15/06/09

Overdayculture

W3110 Δcsagα + pC1 in 3 mL LB-Cm-Media (1% Glucose)

Platereader experiment

1. Add 30 µL overnight culture (probe B1 in the 96-well-plate)
2. After 2 h: induction with IPTG (probe B2 in the 96-well-plate)
3. After 2 h: fluorescence measurement with the plate reader
4. Non fluorescent cells (Control)
5. culture 4h after induction
6. culture 4h after induction 1:10 diluted

1 2 3 4 5 6 blank
OD 0,7117 0,2091 0,2882 0,1249 0,4069 0,0909 0,0379
fluorescence 3850 229 303 203 1297 342 225
F/OD 5410 1095 1051 1625 3188 3762

Overday culture (W3110 DcsagA cells)

- 50 mL SOB-Medium
- Add 50 µL overnight culture
- Incubate 3 h at 30°C, then 1 h at 37°C
- OD = 0,46
- Preparation of electrocompetent cells

Electrocompetent cells

W3110 Δcsagα cells

Transformation

pC1 (constructed Curli-Plasmid)and iGEM (Curli, Lyon, 2014) plasmid (p70) into W3110 Δcsagα cells --> repetition because not many colonies (pC1) and not successful (p70)


15/06/10

Transformation

p70 in DH5α-Cells and pC1 in W3110-Cells, repetition of the streak out for the W3110 ΔcsgA cells (no colony picking possible)


15/06/11

Colony-PCR

Nutrinity
Figure 3: lane 2-4: W3110_pC1; lane 5-7: W3110Δ_pC1; lane 8-10: p70

Overnightcultures

W3110_pC1,W3110Δ_pC1,p70 in LB-Cm-Media


15/06/12

Platereader experiment

- Preparation of a day culture from overnight culture
- After 2h, prepared 96 well plate with different dillution of IPTG (10µL) (0mM, 0.01mM, 0.1mM, 0.5mM, 1mM, 10mM) to each strain (90µL) (DH5α, W3110 WT, W3110 ΔcsgA)
- Read out by fluorescence Photometer

15/06/24

Restriction

Template: pC1
Enzymes: NheI, BamHI
Temperature: 37°C

PCR-Purification

Ligation

Ligation of pC1 with SpyTag (DNA via primer-annealing)--> pC3

Transformation

Trafo of pC3 into DH5α

15/06/25

CV-staining

preparation of SDS-probes

W3110, W3110 ΔcsgA, W3310 ΔcsgA pC1, W3310 ΔcsgA p70


15/06/26

SDS-Page















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