Notebook : August 9

Lab work

A - Aerobic/Anaerobic regulation system

1 - Obtaining Pfnr_RBS-LacZ-Term in PSB1C3

Anaïs, Nadia, XiaoJing

We do the exprience again because the lysis made on wensday didn't happen. It's probably because the phage strain was too old ( 2001)

Protocol : transduction

Picture: lysed cells comparison. 0µl phage(control): the petri dish is cloudy, bacteria are not lysed. 50µl phage: the petri dish is clear, bacteria are lysed by phages. We used a wild type strain to keep a stock and a Δ fnr E. coli strain to obtain phages that might have encapsidated a Δfnr::Km fragment.

10µl,50µl and 100µl petri dishes are clear so phages are multiplied.

We let the antibiotic over night to select the right strain.

2 - Obtaining RBS_lacZ_ter.

Abdou

Clone 10,14 and 15 plamid extraction using nucleospin kit.

Protocol : hight copy plamid extraction

Results: concentration measured by nanodrop

• clone 10: C=38ng/µl 260/280= 1.78
• clone 14: C=48.5ng/µl 260/280=1.90
• clone 15: C=52 ng/µl 260/280=1.78

We still have to sequence plasmids in order to verify our results.

A - Aerobic/Anaerobic regulation system / B - PCB sensing system

1 - Gibson assembly.

August 1st PCR purification to be sure about the experiment. BphR2 part1, BphR2 part2 and RBS_BphR2_part1, FNR part1, FNR part2 and RBS_FNR_part1.

Protocol : PCR_clean_up

Results:

we have no fragment so we must do again these PCRs