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Revision as of 15:07, 29 August 2012

Secretion

Florigen

August 2

Mutation of FT by Sato
FT gene has two BioBrick restriction enzyme sites, EcoR1 and Pst1 which is next to each other.
So we tried to delete both at once by using two primers with mutation.

Inverse PCR
10xBufer	2mM dNTPs	primer fwd	primer rev	template	polymerase	MilliQ	Total
5	5	1.5	1.5	0.5	1	35.5	50

94°C 2min, (98°C 10sec, 68°C 4min)x4cycles, 4°C Hold

Dpn1 Digestion
PCR product	Dpn1
50	2

37°C,1h incubate

Self-ligation
product	MilliQ	Ligase	T4 Kinase	Total
2	7	5	1	15

16°C, 1h incubate

Transformation
competent cell	DNA
20	2

Cells were stored on ice for 30min.
After 42°C 60sec heat shock, cells were stored on ice for 2min.
Then cells were precultureed at 37°C for 1hr, plated to Kanamycin plate.

August 13

Liquid culture of FT 37°C, overnight

August 14

Miniprep of FT : by Sato, Takeuchi
The concentrarion was 81.5ng/uL
Restriction digestion and Electrophoresis : by Sato
To check wheter mutation was succeed, we did restriction enzyme digestion.

DNA(FT,80ng/uL)	10xBuferH	EcoR1	Pst1	MilliQ	Total
5	2	1	-	12	20
5	2	-	1	12	20

37°C 2h incubate
We did electrophoresis of three FT plasmids, non-cutted, EcoR1 cutted, Pst1 cutted.
However, we couldn't get any bands (data not shown.)

Liquid culture of FT (4mL)

August 15

Miniprep of FT : by Sato, Takeuchi, Hyungcheol
We couldn't get enough concentration of plasmids.
Electrophoresis : by Sato
We retried electrophoresis of three samples same as yesterday.
However, we couldn't get any bands as well.

August 16

Transformation : by Takeuchi, Ota

Name	Well	Sample	Competent Cells	Total	Plate	Colony
FT	-	1 µL	10	11	LB (Kan+)	×
pSB1C3	1-3-A	1	10	11	LB (CP+)	○
I719005	1-15-N	1	10	11	LB (Amp+)	○

August 17

Transformation : by Takeuchi

Name	Well	Sample	Competent Cells	MilliQ	Total	Plate	Colony
FT	-	2	2	18	22	LB (Kan+)	×

We found that mutation of FT was not successful.

August 20

We decided to do PCR using FT specific primers before mutation.
PCR of FT : by Sato

10xBufer	dNTPs	MgSO4	primer fwd	primer rev	template	polymerase	MilliQ	Total
5	5	3	1	1	1(130ng/µL)	1(KOD plus neo)	33	50

94°C 2min, (98°C 10sec, 68°C 15sec)x30cycles, 4°C Hold
After the ethanol precipitation, we diluted in 30µL of MilliQ.
The concentration was 203ng/µL.

Electrophoresis

Lane	Name	length(bp)
1	1kb ladder	-
2	FT	600

August 21

Restriction digestion : by Sato

DNA(FT,203ng/µL)	10xBuferM	Xba11	Pst1	MilliQ	Total
10	4	1	1	24	40

37°C, 5h incubate
After the ethanol precipitation, we diluted in 30µL of MilliQ.
The concentration was 54,9ng/µL.

Ligation : by Sato

Vector		Insert		Ligation High Ver.2
pSB1C3	1	FT	10	5.5

Liquid culture
T7 promoter, pSB1C3 (4mL)

August 22

Miniprep : by Sato

T7 promoter	pSB1C3
85.3ng/µL	82.93ng/µL

Golden Gate Assembly

August 10

Golden Gate Assembly method This method helps us to constract some genes quickly and we can design the order of constractions. We are trying to construct a gene cycle composed of 6 genes( pSB1A3, lacI, GFP, RFP, GFP, DT). After this experiment is confirmed to work, we will so some experiment to check how the numbers of promorters influences the strength of transcription.

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