Bologna University/Fluorescence Test
From 2007.igem.org
- 1. Growth O/N for 15h in LB (5ml) of:
- -transformed E. coli with appropriate antibiotic;
- -E. coli.
- 2. All measures must be done in M9 with OD=1.2.
- 3. The day after, in the morning, measure OD.
- 4. To obtain OD=1.2:
- -centrifuge 4ml of bacterial culture at 4400rpm for 3min at 25°C;
- -discard the supernatant;
- -resuspend the cell pellet in 6ml of M9 medium with glucose and appropriate antibiotic (1000x [ ]).
- 5. Measure OD: adjust OD to 1.2 through further dilution or cell growth.
- 6. Adjust PMT offset with untransformed E. Coli.
- 7. Test culture fluorescence before IPTG induction.
- 8. IPTG induction:
- -centrifugate bacteria culture at 4400rpm for 3min at 25°C;
- -discard the supernatant;
- -resuspend cell pellet in M9 medium and 2mM IPTG with appropriate antibiotic (1000x [ ]);
- 9. Incubate at 37°C.
- 10. Test fluorescence after 10min, 20min, 30min, 1h, 2h.