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From 2012.igem.org

Promoters & Reporters workgroup

Gel Extraction

1) Excise the DNA fragment from agarose gel
2) Weight the gel slice
3) Add 3 volumes of Buffer QG to 1 volume of gel (100 mg = 100 uL)

Type	Gel weight (g)	V QG (uL)	V iso (uL)
pCS2	0,13	390	130
GFP	0,10	300	100
YFP	0,08	240	80
CFP	0,10	300	100

4) Incubate at 50 degrees Celsius for 10 min to dissolve the gel
5) Add 1 gel volume of isopropanol to the sample and mix
6) Apply the sample to the QIAquick column to bond DNA
7) Centrifuge at 13 000 rpm for 1 min and discard flow-through
8) Add 500 uL of Buffer QG to the column
9) Centrifuge at 13 000 rpm for 1 min and discard flow-through
10) To wash, add 750 uL of Buffer PE
11) Centrifuge at 13 000 rpm for 1 min and discard flow-through
12) Centrifuge the column again at 13 000 rpm for 1 min and place the column in a clean 1.5 mL tube
13) Add 50 uL of Buffer EB to elute DNA
14) Check DNA concentration with Nanodrop

DNA Concentration

Type	Concentration (ng.uL-1)
pCS2	9,4
GFP	3,1
YFP	4,7
CFP	4,7

Concentration are really low => Need to optimize the protocol and make a new gel migration.

Gel Migration

Gel at 0,08%
V tae = 30 mL
m aga = 0,24 g
V bet = 3 uL