Team:Dundee/labjournal manu

LABJOURNAL

BioSpray

Our forensic toolkit aims to use synthetic biology approaches to improve on the current methods used by crime scene investigators.

Chromium Detector

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Fingerprint Aging

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Week Beginning 22/06

Summary

This week was all about getting started with the newly arrived biobrick BBa_K1058008

Day 1

Aim of experiment: To prepare BBa_K1058008 for sequence confirmation, storage, and further processing.

Protocols Used:

Click here to see our plating protocol.

Click here to see our overnight culture protocol.

Results: N/A

Next Steps: Purification of the Plasmid, containing BBa_K1058008 and confirmation of size and sequence.

Day 2

Aim of experiment: To prepare BBa_K1058008 for sequence confirmation, storage, and further processing.

Protocols Used:

Click here to see our plating protocol.

Click here to see our overnight culture protocol.

Results: N/A

Next Steps: Purification of the Plasmid, containing BBa_K1058008 and confirmation of size and sequence.

Day 3

Aim of experiment: To prepare BBa_K1058008 for sequence confirmation, storage, and further processing.

Protocols Used:

Click here to see our plating protocol.

Click here to see our overnight culture protocol.

Results: N/A

Next Steps: Purification of the Plasmid, containing BBa_K1058008 and confirmation of size and sequence.

Day 4

Aim of experiment: To prepare BBa_K1058008 for sequence confirmation, storage, and further processing.

Protocols Used:

Click here to see our plating protocol.

Click here to see our overnight culture protocol.

Results: N/A

Next Steps: Purification of the Plasmid, containing BBa_K1058008 and confirmation of size and sequence.

Day 5

Aim of experiment: To prepare BBa_K1058008 for sequence confirmation, storage, and further processing.

Protocols Used:

Click here to see our plating protocol.

Click here to see our overnight culture protocol.

Results: N/A

Next Steps: Purification of the Plasmid, containing BBa_K1058008 and confirmation of size and sequence.

Day 6

Aim of experiment: To prepare BBa_K1058008 for sequence confirmation, storage, and further processing.

Protocols Used:

Click here to see our plating protocol.

Click here to see our overnight culture protocol.

Results: N/A

Next Steps: Purification of the Plasmid, containing BBa_K1058008 and confirmation of size and sequence.

Day 7

Aim of experiment: To prepare BBa_K1058008 for sequence confirmation, storage, and further processing.

Protocols Used:

Click here to see our plating protocol.

Click here to see our overnight culture protocol.

Results: N/A

Next Steps: Purification of the Plasmid, containing BBa_K1058008 and confirmation of size and sequence.

Week 2

Week summary

faucibus eleifend lectus. In molestie augue leo, id imperdiet ante imperdiet at. Quisque ultrices neque sit amet felis tincidunt tristique at sed nisi. Class aptent taciti sociosqu ad litora torquent per conubia nostra, per inceptos himenaeos. Ut suscipit ut massa in ultricies. Nunc nec tincidunt nunc, ut consectetur lorem. Sed non justo nislo nislo nisl. Morbi felis lectus, ultricies nec tellus eu, faucibus eleifend lectus. In molestie augue leo, id imperdiet ante imperdiet at. Quisque ultrices neque sit amet felis tincidunt tristique at sed nisi. Class aptent taciti sociosqu ad litora torquent per conubia nostra, per inceptos himenaeos. Ut suscipit ut massa in ultricies. Nunc nec tincidunt nunc, ut consectetur lorem. Sed non justo nislo nislo nisl. Morbi felis lectus, ultricies nec tellus eu, faucibus eleifend lectus. In molestie augue leo, id imperdiet ante imperdiet at. Quisque ultrices neque sit amet felis tincidunt tristique at sed nisi. Class aptent taciti sociosqu ad litora torquent per conubia nostra, per inceptos himenaeos. Ut suscipit ut massa in ultricies. Nunc nec tincidunt nunc, ut consectetur lorem. Sed non justo nislo nislo nisl.

Day 1

Aim of experiment: ultricies nec tellus eu

Protocols Used:

faucibus eleifend lectus. In molestie augue leo, id imperdiet ante imperdiet at. Quisque ultrices neque sit amet felis tincidunt tristique at sed nisi. Class aptent taciti sociosqu ad litora torquent per conubia nostra, per inceptos himenaeos. Ut suscipit ut massa in ultricies. Nunc nec tincidunt nunc, ut consectetur lorem. Sed non justo nislo nislo nisl. Morbi felis lectus, ultricies nec tellus eu, faucibus eleifend lectus. In molestie augue leo, id imperdiet ante imperdiet at. Quisque ultrices neque sit amet felis tincidunt tristique at sed nisi. Class aptent taciti sociosqu ad litora torquent per conubia nostra, per inceptos himenaeos. Ut suscipit ut massa in ultricies. Nunc nec tincidunt nunc, ut consectetur lorem. Sed non justo nislo nislo nisl. Morbi felis lectus, ultricies nec tellus eu, faucibus eleifend lectus. In molestie augue leo, id imperdiet ante imperdiet at. Quisque ultrices neque sit amet felis tincidunt tristique at sed nisi. Class aptent taciti sociosqu ad litora torquent per conubia nostra, per inceptos himenaeos. Ut suscipit ut massa in ultricies. Nunc nec tincidunt nunc, ut consectetur lorem. Sed non justo nislo nislo nisl.

Day 2

Aim of experiment: ultricies nec tellus eu

Protocols Used:

faucibus eleifend lectus. In molestie augue leo, id imperdiet ante imperdiet at. Quisque ultrices neque sit amet felis tincidunt tristique at sed nisi. Class aptent taciti sociosqu ad litora torquent per conubia nostra, per inceptos himenaeos. Ut suscipit ut massa in ultricies. Nunc nec tincidunt nunc, ut consectetur lorem. Sed non justo nislo nislo nisl. Morbi felis lectus, ultricies nec tellus eu, faucibus eleifend lectus. In molestie augue leo, id imperdiet ante imperdiet at. Quisque ultrices neque sit amet felis tincidunt tristique at sed nisi. Class aptent taciti sociosqu ad litora torquent per conubia nostra, per inceptos himenaeos. Ut suscipit ut massa in ultricies. Nunc nec tincidunt nunc, ut consectetur lorem. Sed non justo nislo nislo nisl. Morbi felis lectus, ultricies nec tellus eu, faucibus eleifend lectus. In molestie augue leo, id imperdiet ante imperdiet at. Quisque ultrices neque sit amet felis tincidunt tristique at sed nisi. Class aptent taciti sociosqu ad litora torquent per conubia nostra, per inceptos himenaeos. Ut suscipit ut massa in ultricies. Nunc nec tincidunt nunc, ut consectetur lorem. Sed non justo nislo nislo nisl.

Day 3

Aim of experiment: ultricies nec tellus eu

Protocols Used:

faucibus eleifend lectus. In molestie augue leo, id imperdiet ante imperdiet at. Quisque ultrices neque sit amet felis tincidunt tristique at sed nisi. Class aptent taciti sociosqu ad litora torquent per conubia nostra, per inceptos himenaeos. Ut suscipit ut massa in ultricies. Nunc nec tincidunt nunc, ut consectetur lorem. Sed non justo nislo nislo nisl. Morbi felis lectus, ultricies nec tellus eu, faucibus eleifend lectus. In molestie augue leo, id imperdiet ante imperdiet at. Quisque ultrices neque sit amet felis tincidunt tristique at sed nisi. Class aptent taciti sociosqu ad litora torquent per conubia nostra, per inceptos himenaeos. Ut suscipit ut massa in ultricies. Nunc nec tincidunt nunc, ut consectetur lorem. Sed non justo nislo nislo nisl. Morbi felis lectus, ultricies nec tellus eu, faucibus eleifend lectus. In molestie augue leo, id imperdiet ante imperdiet at. Quisque ultrices neque sit amet felis tincidunt tristique at sed nisi. Class aptent taciti sociosqu ad litora torquent per conubia nostra, per inceptos himenaeos. Ut suscipit ut massa in ultricies. Nunc nec tincidunt nunc, ut consectetur lorem. Sed non justo nislo nislo nisl.

Day 4

Aim of experiment: ultricies nec tellus eu

Protocols Used:

faucibus eleifend lectus. In molestie augue leo, id imperdiet ante imperdiet at. Quisque ultrices neque sit amet felis tincidunt tristique at sed nisi. Class aptent taciti sociosqu ad litora torquent per conubia nostra, per inceptos himenaeos. Ut suscipit ut massa in ultricies. Nunc nec tincidunt nunc, ut consectetur lorem. Sed non justo nislo nislo nisl. Morbi felis lectus, ultricies nec tellus eu, faucibus eleifend lectus. In molestie augue leo, id imperdiet ante imperdiet at. Quisque ultrices neque sit amet felis tincidunt tristique at sed nisi. Class aptent taciti sociosqu ad litora torquent per conubia nostra, per inceptos himenaeos. Ut suscipit ut massa in ultricies. Nunc nec tincidunt nunc, ut consectetur lorem. Sed non justo nislo nislo nisl. Morbi felis lectus, ultricies nec tellus eu, faucibus eleifend lectus. In molestie augue leo, id imperdiet ante imperdiet at. Quisque ultrices neque sit amet felis tincidunt tristique at sed nisi. Class aptent taciti sociosqu ad litora torquent per conubia nostra, per inceptos himenaeos. Ut suscipit ut massa in ultricies. Nunc nec tincidunt nunc, ut consectetur lorem. Sed non justo nislo nislo nisl.

Day 5

Aim of experiment: ultricies nec tellus eu

Protocols Used:

faucibus eleifend lectus. In molestie augue leo, id imperdiet ante imperdiet at. Quisque ultrices neque sit amet felis tincidunt tristique at sed nisi. Class aptent taciti sociosqu ad litora torquent per conubia nostra, per inceptos himenaeos. Ut suscipit ut massa in ultricies. Nunc nec tincidunt nunc, ut consectetur lorem. Sed non justo nislo nislo nisl. Morbi felis lectus, ultricies nec tellus eu, faucibus eleifend lectus. In molestie augue leo, id imperdiet ante imperdiet at. Quisque ultrices neque sit amet felis tincidunt tristique at sed nisi. Class aptent taciti sociosqu ad litora torquent per conubia nostra, per inceptos himenaeos. Ut suscipit ut massa in ultricies. Nunc nec tincidunt nunc, ut consectetur lorem. Sed non justo nislo nislo nisl. Morbi felis lectus, ultricies nec tellus eu, faucibus eleifend lectus. In molestie augue leo, id imperdiet ante imperdiet at. Quisque ultrices neque sit amet felis tincidunt tristique at sed nisi. Class aptent taciti sociosqu ad litora torquent per conubia nostra, per inceptos himenaeos. Ut suscipit ut massa in ultricies. Nunc nec tincidunt nunc, ut consectetur lorem. Sed non justo nislo nislo nisl.

×

PCR Protocol

PCR reaction mixtures were set up according to the table below. The length of all sequences used is stated in the Sequences section.

Reactants	Volume (µl)
DNA	1
DMSO	2.5
Forward Primer	0.5
Reverse Primer	0.5
Herculase Buffer	10
dNTP	0.5
Herculase	0.5
H2O	34.5

**PCR Programme**

Elongation time was altered according to the length of the sequences.

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Restriction Digest Protocol

Restriction digests were set up according to the table below. The appropriate reaction and restriction enzymes that were used is stated in the Journal section.

	Post Plasmid Purification	Post PCR	gBlock
DNA	1mg	50µl	100ng
Cutsmart Buffer (µl)	6	6	6
Water (µl)	As required	1	As required
Enzyme 1 (µl)	1.5	1.5	1.5
Enzyme 2 (µl)	1.5	1.5	1.5
Total Volume (µl)	30	60	30

The digests were incubated at 37^oC for 3 hours.
Note that when performing plasmid digestions, 2.5µl of alkaline phosphatase and 2.5µl of its buffer was added at the 2 hour and 2.5 hour mark.

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Ligation Protocol

Ligation reactions were set up according to the table below. The vector to insert ratio is stated for each specific reaction in the Journal section.

	Vector (µl)	2:1 (Vector: Insert) [µl]	3:1 (Vector: Insert) [µl]	4:1 (Vector: Insert) [µl]
T4 DNA Ligase	1	1	1	1
Ligase Buffer	1	1	1	1
Vector	1	1	1	1
Insert	-	2	3	4
H20	7	5	4	3

The reactions were incubated at room temperature for at least 3 hours.

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Transformation Protocol

1. 100µl of competent cells were defrosted. Thaw on ice.

2. Agar plates were taken out of 4^oC to warm to room temperature.

3. 1-5µl of DNA was added to cells.

4. Cell and DNA mixture was left on ice for 20 minutes.

5. Mixture was placed in 42^oC water bath for 90 seconds.

6. Mixture was put back on ice for 2 minutes.

7. 1ml of LB (without antibiotic) was added to cells.

8. Cells were allowed to grow for 1 hour at 37^oC in a shaking incubator.

9. Cells were then spun down and the supernatant discarded.

10. The pellet was resuspended in the 100µl.

Cells were plated on agar plates with appropriate antibiotic.

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Plating Protocol

1. Agar plates with required antibiotic were taken out of 4^oC to warm to room temperature.

2. Cells or colonies were picked up from the source with a toothpick under sterile conditions.

3. Fresh agar plates were inoculated with cells on the toothpick.

4. Agar plates were incubated at 4^oC over night.

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Plating Protocol

1. Agar plates with required antibiotic were taken out of 4^oC to warm to room temperature.

2. Cells or colonies were picked up from the source with a toothpick under sterile conditions.

3. 5ml of LB medium, supplemented with the required antibiotic, were inoculated with the toothpick.

4. Tubes were incubated at 37^oC in a rotary incubator at 200rpm over night.

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Protein Expression Optimization Protocol

SDS-PAGE and Western Blotting

1. 50µl of an overnight culture was used to inoculate 5ml of fresh LB containing the appropriate antibiotics and left to grow at 37^oC in a shaking incubator.

2. Once the OD₆₀₀=0.6-0.8, 1mM of IPTG was added to the culture and left to grow for a further 3 hours.

3. 1ml of each culture was taken and spun down in a microcentrifuge for 3 minutes.

4. Meanwhile, 950µl of 2x Laemmli sample buffer was added to 50µl of B-mercaptoethanol.

5. The supernatant was discarded from the samples and the pellet resuspended in 200µl of the above solution.

6. The samples were then boiled at 90^oC for 10 minutes.

7. Afterwards, they were spun down for 1 minute in a microcentrifuge.

8. At this stage, the samples could be stored at -20^oC or ran on a gel immediately.

9. Two gradient gels consisting of a 12% separating gel and a stacking gel were prepared and the samples ran at 100V until proteins reach end of the stacking gel at which point the voltage was increased to 200V for 20 minutes.

10. One gel was stained using Instant Blue and the other was used to transfer the proteins onto a membrane.

11. After the proteins had been transferred onto the membrane, the membrane was blocked in 5% Marvel milk overnight at 4^oC.

12. The next day, the membrane was washed 3 times in 1xTBST buffer and then suspended in 10ml of 1xTBS buffer to which the primary anti-His antibody was added and left for one hour. The protein ladder was cut off before adding the primary antibody.

13. The membrane was then washed 3 times in 1xTBST buffer for 5 minutes and then suspended in 10ml of 1xTBS buffer, to which the secondary antibody was added and left for one hour.

14. The membrane was then washed in 3x10ml 1xTBST buffer for 5 minutes.

15. The blot was then soaked in developing solution for 5 minutes before being wrapped in a plastic cover aligned with the protein ladder that was cut off at step 12.

Once in the developing room, the film was exposed to the blot for 30 seconds, 2 minutes and 5 minutes and then placed in the film developer.

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