Difference between revisions of "Part:BBa I746907:Experience"
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[[Image:2011-09-19 GFP Assay Diagramm prozentual.jpg]] | [[Image:2011-09-19 GFP Assay Diagramm prozentual.jpg]] | ||
| + | ==Contribution: Ulaval 2019 == | ||
| + | <html> | ||
| + | <p>This parts was characterized by Team ULaval in the cell-free expression system myTX-TL from ArborBioscience. This part had never been characterized, and no fluorescence or expression data was available. By expressing this part in a cell-free commercial media, and measuring the intensity of GFP fluorescence, we hope to demonstrate that this part is indeed functional, and usable inside a cell-free expression system. As shown by figure 1, fluorescence was observed after 75 minutes, attained significant levels after about 5h and peaked after 16h.<br></p> | ||
| + | <p>Our data shows that this part is compatible with the cell-free expression system used. Using this part in cell-free systems could ease the purification of this part if large quantities of the purified protein are necessary for a given experiment. <br></p> | ||
| + | <figure><center><img src="https://2019.igem.org/wiki/images/0/04/T--Ulaval--ResultsFig7B.png" style="width:100%;"></center><figcaption><b>Figure 1.</b> Fluorescence curve for BBa_I746907. Fluorescence intensity was measured and corrected according to the IGEM data analysis table v2. However, as these fluorescence measurements were carried outside of cells, no OD600 was calculated. Fluorescence is therefore only corrected using the fluorescein reference curve.</figcaption></figure><br></html> | ||
| − | == | + | ==TU_Munich Team 2011 GFP Assay== |
I746907 (T7 promotor with GFP) in pSB1A2 in BL21DE3 cells | I746907 (T7 promotor with GFP) in pSB1A2 in BL21DE3 cells | ||
| Line 19: | Line 24: | ||
change of medium to M63 (LB shows slight fluorescence itself) | change of medium to M63 (LB shows slight fluorescence itself) | ||
| − | '''Problem''': measurement of Absorbance only every 100 minutes led to spikes in the diagram | + | five concentrations of IPTG in the medium were tested (1.5, 1.0, 0.5, 0.25, 0.1 mM IPTG) |
| + | growth of cells at 37 °C, shaking | ||
| + | |||
| + | excitation filter: 485 nm, emission filter: 520 nm | ||
| + | |||
| + | '''Problem''': measurement of Absorbance only every 100 minutes led to spikes in the diagram (Fluorescence measured every 10 min.) | ||
====results==== | ====results==== | ||
| − | no concentration dependency of GFP induction as IPTG concentration was in saturation range | + | part works well |
| + | |||
| + | induction t(1/2) = ca. 200 min | ||
| + | |||
| + | no concentration dependency of GFP induction at 1.5 to 0.1 mM IPTG, as IPTG concentration was in saturation range | ||
for this diagram: | for this diagram: | ||
| − | * | + | * calculation: Fluorescence/Absorbance |
* mean of triplicate measurement | * mean of triplicate measurement | ||
* adjusted to 100 % | * adjusted to 100 % | ||
Latest revision as of 18:46, 21 October 2019
This experience page is provided so that any user may enter their experience using this part.
Please enter
how you used this part and how it worked out.
Applications of BBa_I746907
User Reviews
TU_Munich Team 2011
We tested the part and it worked very well.
Contribution: Ulaval 2019
This parts was characterized by Team ULaval in the cell-free expression system myTX-TL from ArborBioscience. This part had never been characterized, and no fluorescence or expression data was available. By expressing this part in a cell-free commercial media, and measuring the intensity of GFP fluorescence, we hope to demonstrate that this part is indeed functional, and usable inside a cell-free expression system. As shown by figure 1, fluorescence was observed after 75 minutes, attained significant levels after about 5h and peaked after 16h.
Our data shows that this part is compatible with the cell-free expression system used. Using this part in cell-free systems could ease the purification of this part if large quantities of the purified protein are necessary for a given experiment.
TU_Munich Team 2011 GFP Assay
I746907 (T7 promotor with GFP) in pSB1A2 in BL21DE3 cells
change of medium to M63 (LB shows slight fluorescence itself)
five concentrations of IPTG in the medium were tested (1.5, 1.0, 0.5, 0.25, 0.1 mM IPTG) growth of cells at 37 °C, shaking
excitation filter: 485 nm, emission filter: 520 nm
Problem: measurement of Absorbance only every 100 minutes led to spikes in the diagram (Fluorescence measured every 10 min.)
results
part works well
induction t(1/2) = ca. 200 min
no concentration dependency of GFP induction at 1.5 to 0.1 mM IPTG, as IPTG concentration was in saturation range
for this diagram:
- calculation: Fluorescence/Absorbance
- mean of triplicate measurement
- adjusted to 100 %
- corrected for outliers
- shortened to 700 min
UNIQfa0102a07f4abd52-partinfo-00000001-QINU
UNIQfa0102a07f4abd52-partinfo-00000002-QINU