Difference between revisions of "Part:BBa K2997012"

Revision as of 20:04, 19 October 2019 (view source) Tanya0809 (Talk | contribs) (→‎Characterization) ← Older edit		Revision as of 20:05, 19 October 2019 (view source) Tanya0809 (Talk | contribs) (→‎Characterization) Newer edit →
Line 12:		Line 12:
	<br>		<br>
	<div style="width=100%; display:flex; align-items: center; justify-content: center;">		<div style="width=100%; display:flex; align-items: center; justify-content: center;">
−	<img src="https://2019.igem.org/wiki/images/b/b7/T--NCKU_Tainan--FNR_microscopy.png" style="width:40%;">	+	<img src="https://2019.igem.org/wiki/images/b/b7/T--NCKU_Tainan--FNR_microscopy.png" style="width:50%;">
	</div>		</div>
	<br>		<br>

---

Revision as of 20:05, 19 October 2019

P_fnr-GFP

Characterization

This year, we characterized FNR promoter (BBa_K1123000) which is an anaerobic promoter. Originally, we used this promoter to drive the expression of TAL constructs. However, finding that this promoter has a higher expression level of GFP under aerobic conditions, we did not use this promoter for our project. Instead, we used the strong constitutive promoter J23100 as our promoter.

We first cultured DH5a pSB1C3-Pfnr-GFP under aerobic and anaerobic conditions. After 10 hours of incubation, we fixed the E. coli cells in 2% agarose gel and placed it on a glass slide, then place the glass slide under a microscope for image capturing.

Fig. 1 Differential interference contrast (DIC) microscope image and fluorescence microscope image for a single E. coli cell.

We then compared the brightness of a single E. coli cell under a fluorescence microscope using ImageJ Intensity Processing. The results are shown below.

Fig. 2. Quantification of single E. coli cell (n=3) fluorescence intensity using ImageJ Intensity Processing after 10 hours of incubation in both aerobic and anaerobic conditions.

Sequence and Features