Baby cell column: Difference between revisions
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==Methode== | |||
===Preperation of cells=== | |||
* grow strain NK9386 in 5 ml of your medium (the same as used for the bady cell column) over night | |||
* start a 1 l culture in 2 l plastic flasks (the sticky cells would stick to a glas flask!) | |||
* at OD ~0.2 add 1 ml of 100mM IPTG and let grow for one more hour at low shaking (100rpm) | |||
* centrifuge 10 min at 3000rpm at room temperature | |||
* leave about 25ml medium on the pellet and resuspend cells | |||
* add cells to the glass beads on the column (see below) | |||
===Preparation of column=== | |||
==References== | ==References== | ||
Revision as of 06:11, 28 January 2009
The baby cell column is a way of getting synchronized bacterial cells (E. coli) which are at more or less the same point in their cell cycel.
Basic idea
Bacteria are attached to glass beads with there flagella. The protein coding for a specailly sticy flagella is introduced on the chromosome behind an inducible promotor. The glass beads with the cells are than put on a column and medium without inductor is run thru it. The new born cells will than not have a flagella and washed of with the medium. Such cells will be "babies" and at the beginning of the cell cycel.
Material
For the set up of the column one needs the following material
| Part | Company and cat. number | Price | Notes | Link |
|---|---|---|---|---|
| 1x Rotilabo®-Luer-tubing connectors, Luer-fitting: LLM, for 2,4mm tubing, 10 pices | Roth CT59.1 | 9.95 € | http://www.carlroth.com | |
| 1x Rotilabo®-Luer-tubing connectors, Luer-fitting: LLF, for 2,4mm tubing, 10 pices | Roth CT63.1 | 9.95 € | ||
| 1x Rotilabo®-Mini hose reducers, straight , 2,4 – 4,8 mm, 10 pices | Roth CT46.1 | 11.95 € | ||
| 1x Rotilabo®-stoppers with hole, 23-29- 5mm hole, 10 pices | Roth Y852.1 | 18,90 € | ||
| 3x Rotilabo®-stand rods 600mm | Roth 2378.1 | 8,95 € | ||
| 2x Rotilabo®-retort stand bases | Roth 2369.1 | 15.20 € | ||
| 7x Rotilabo®-cross double boss head | Roth 2194.1 | 7.95 € | ||
| 5x Rotilabo®-stand clamps, made of malleable iron, 40mm | Roth 1995.1 | 9.45 € | ||
| 1x Rotilabo®-tube clamps, Polysulfone (autoclavable) | Roth T764.1 | 32.80 € | ||
| 1x Corning® Erlenmeyer flask polycarbonate baffled flasks capacity 2000 mL, polypropylene cap (vented), package with 6 pices | Sigma CLS431256-6EA | 300 € | http://www.sigmaaldrich.com | |
Methode
Preperation of cells
- grow strain NK9386 in 5 ml of your medium (the same as used for the bady cell column) over night
- start a 1 l culture in 2 l plastic flasks (the sticky cells would stick to a glas flask!)
- at OD ~0.2 add 1 ml of 100mM IPTG and let grow for one more hour at low shaking (100rpm)
- centrifuge 10 min at 3000rpm at room temperature
- leave about 25ml medium on the pellet and resuspend cells
- add cells to the glass beads on the column (see below)
