Team:BCCS-Bristol/Calendar-Notebook/21 July 2008

From 2008.igem.org


Growth curve measurement

The OD600 of E. coli MC1000 and MG1655 was measured over a day so that we would know whether the bacteria were in their log phase in any experiments requiring innoculation of bacteria.

A, B and C show 100, 500 and 200 µl innoculations of overnight culture in 50 ml LB broth, respectively.


Time (minutes) OD600 (1:5 diluted)


MG1655MC1000
ABCABC
00.00160.00420.0170.00160.00440.0174
600.0080.0130.0730.0060.0170.068
800.0110.0520.1090.0090.0460.123
1000.0190.0590.1420.0170.0670.167
1200.0290.0760.1690.0240.0830.183
1400.0390.0950.2130.0390.1440.226
1600.0630.1360.260.0530.1470.275
1800.0740.1660.2760.0690.1860.298
2000.1050.2070.3010.0890.220.316
2200.1340.250.3550.1160.2680.331
2400.1780.2760.3860.1510.2930.341
2600.2330.3290.4190.1980.3250.372
2800.2390.3340.4350.2030.3260.375
3000.2630.3630.4730.2380.340.388
3200.2960.3910.4910.270.3640.412
3400.3190.4250.5110.290.3780.429
3600.320.4350.5120.2940.3820.432
3800.3920.5420.5140.3110.4340.438
4000.4350.5490.5880.3480.4570.497
4200.470.520.4870.3820.4620.504
4400.4830.5860.6330.4770.4370.516
4600.4980.4820.6290.4110.4840.517
4800.5740.6430.7210.4510.5160.524
5000.6070.660.730.4550.5140.515
5200.650.6730.7230.4530.5220.523
BCCS-080721-growth curve E. coli MC1000 and MG1655.PNG

Swimming agar assay

Chemotaxis experiment for MG1655 and MC1000 showed no real difference between the control (water) and the aspartate. This may have been due to higher agar concentration caused by an unusually large water loss in autoclaving, causing high concentrations of agar. The experiment repetition was started today.

BioBrick Transformation

The transformation of bacteria with BioBrick from paper was started. Therefore, a hole was punched out of the DNA spot of a [http://partsregistry.org/Part:BBa_E0240 GFP generator] and put in TE buffer (below) following protocol on iGEM sheet.

Miscellaneous

DMSO stocks of E. coli MC1000 and MG1655 were made as back up in the -80oC freezer.