Team:Paris/September 11

From 2008.igem.org

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(Checking our ligases)
(Checking our ligases)
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==Purification==
==Purification==
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[[Image:After-purification.JPG|thumb|After purification]]
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[[Image:After-purification.JPG|thumb|After purification <br> well n°2: D202 purified by gel <br> well n°3: D202 purified by column <br> well n°4: D203 purified by column <br> well n°5: MP101]]
D202 (EcoRI digestion) was purified in 2 ways:
D202 (EcoRI digestion) was purified in 2 ways:

Revision as of 12:18, 12 September 2008

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Contents

Checking our ligases

Because we couldn't be sure of the results of yesterday experiment, we decided to carry it out one more time.

Digestion

Before excision
After ecxision

DNA used for digestion: MP101
2 digestion were carried out:

  • one with EcoRI (D202), that cuts the plasmid only one time
  • the other with BspHI (D203), that cuts the plasmid three times

Reaction mixture

  • 10 µL of DNA
  • 6µL of 10X buffer 2
  • 0,6 µL of 100X BSA
  • 2 µL of enzyme (EcoRI or BspHI)
  • 41,4 µL of water

2h30 at 37°C and then 20 min at 65°C

well n° 1 2 3 4 5 6 7 8
sample 1 kb ladder MP101
1 µL
D202
10 µL
D202
10 µL
D203
3 µL
100 bp ladder
expected size 2984 bp 1870 bp
1008 bp
105 bp
measured size 3 kb 3 kb 1,9 kb
1 kb

Purification

After purification
well n°2: D202 purified by gel
well n°3: D202 purified by column
well n°4: D203 purified by column
well n°5: MP101

D202 (EcoRI digestion) was purified in 2 ways:

  • by gel extraction
  • or by column

D203 (BspHI digestion) was purified:

  • by column

Elution in 30 µL of EB buffer

Ligation