Electroporation of cells:
- Add 5 l DNA (1 g/l) to 100 l of electrocompetent
cells. Homogenize by gently mixing with pipette several times.
Transfer mixture into a prechilled cuvette.
- Wipe moisture from the cuvette and insert the cuvette into the device.
- Electroporation:
Mode
Prokaryotes O
Voltage (V)
2,500 V
Time constant (T)
5 ms
- Add 1 ml YPD medium with 1 M sorbitol, incubate for 1 hour at 30 C.
- Centrifuge cells 30 sec., resuspend in 0.4 ml sterile water, plate
in aliquots on selective plates.
Expected results:
Transformation efficiency up to 200 transformants/g of DNA.
'"/>Source:
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Kluyveromyces lactis2.
Lactococcus lactis3.
Lactococcus lactis