LB and YEPD Culture Media Preparation and E.coli Inoculation

Material

Reagent

Volume/mass

Tryptone

30g

Yeast Extract

15g

NaCl

10g

Glucose

20g

Agar

6g

ddH2O

/

Carbenicillin

1g

Chloramphenicol

250mg

CCTCC M94055 (E.coli)

5ul

GA (E.coli)

5ul

TemA (E.coli)

5ul

pHCas9 (E.coli)

5ul

 

Apparatus

Amount

Constant temperature shaker

1

Electronic balance

2

Clean Bench

1

Procedure

1. Mix 10g tryptone, 5g yeast extract, 10g NaCl and 3g agar (to solidify, if the LB media is liquid, then ignore agar) together to prepare LB culture medium.

2. Add ddH2Oure to 1L and do sterilization under 121℃ for 20 min.

3. Mix 20g tryptone, 10g yeast extract, 20g glucose and 3g agar (to solidify, if the YEPD culture media is liquid, then ignore agar) together to prepare YEPD culture medium.

4. Add ddH2O to the mixture to 1L and do sterilization under 121℃ for 20min.

5. Weigh 1g Carbenicillin, and mix it with 10ml ddH2O, do filtration sterilization, store the agent of 1ml each for Ampicillin of 100mg/ml.

6. Weigh 250mg Chloramphenicol, and mix it with 10ml ddH2O, do filtration sterilization, store the agent of 1ml each for Chloramphenicol of 25mg/ml.

7. Take 5ul cryopreserved E.coli CCTCC M94055, GA, TemA and pHCas9 respectively, inoculate them into test tube with 3ml liquid LB culture media.

8. Add 5ul antibiotic into each test tube with inoculated E.coli (Carbenicillin for GA and TemA, Chloramphenicol for CCTCC M94055, pHCas9). Culture the E.coli in constant temperature shaker under 37℃, 220rpm for 15h (12-18h interval is acceptable).

9. Add 50ul/ml mixture of E.coli and antibiotic to prepared plate with solid LB culture media in the clean bench, label them with E.coli name + antibiotic.

10.  Placed the prepared E.coli in the bacterial incubator under 37

 

Plastid Extraction (CCTCC M94055, GA, TemA and pHCas9 plasmids)

Material

Reagent

Volume/mass

CCTCC M94055-CAM

2ml

GA-Amp

2ml

TemA-Amp

2ml

pHCas9-CAM

2ml

Buffer S1

1ml

Buffer S2

1ml

Buffer S3

1.4ml

Washing Buffer (ethanol-containing)

4ml

Eluent

200ul

 

Apparatus

Amount

Centrifuge

2

4℃fridge

4

Water Bath Cauldron

1

spin column

4

Centrifuge Tube

8

 

Procedure (For each group)

1. Take 2ml bacterial liquid (for example, GA-Amp) prepared, centrifuge it under 12000rpm for 1min, discard the supernatant liquid (for collecting bacteria).

2. Add 250 μl Buffer S1 taken from 4℃ fridge (for suspending the bacteria).

3. Add 250 μl Buffer S2, turn over the centrifuge tube mildly and sufficiently for 4-6 times till the solution is translucent (for sufficient lysate of bacteria), this step should be within 5 min.

4. Add 350μl Buffer S3, turn over the centrifuge tube mildly and sufficiently for 6-8 times, centrifuge it under 9000rpm for 1min.

5. Transfer the supernatant liquid to spin column, place the spin column into 2ml centrifuge tube, centrifuge it under 9000 rpm for 1min, discard the filtrate.

6. Take out the spin column, add 500μl Washing buffer, centrifuge under 9000 rpm for 1 min, discard the filtrate.

7. Repeat the Step 6.

8. Place the spin column back in the 2ml centrifuge tube, centrifuge it under 12000 rpm for 1min.

9. Take out and place the spin column into 1.5ml centrifuge, wait 1-2 min for volatilization of ethanol, add 50μl 60-65 Eluent solution to the center of the spin column.

10. Place the spin column in 60-65 water bath for 1-2 minutes, take it out and centrifuge it under 12000rpm for 1min.

 

PCR

Material

For X-2-GA plasmid:

PCR system:

#2mix contains dNTPs, Taq DNA polymerase, buffer, cofactor (mgcl2)

Name

X-2-TEF1(429bp)

Volume

(μl)

Name

GA(1580bp)

Volume(μl)

Name

X-2-ADH1t(216bp)

Volume (ul)

2mix

25

2mix

25

2mix

25

X-2-TEF1-F1

2

ADH1t-GA-R1

2

GA-ADH1t-F1

2

GA-TEF1p-R1

2

TEF1p-GA-F1

2

X-2-ADH1t-R1

2

pH Cas9

1.5

GA

1.5

CCTCC M94055

1.5

ddH2O

19.5

ddH2O

19.5

ddH2O

19.5

Total

50

Total

50

Total

50

The primer sequences for PCRX-2-GA-2are as follows :

Primer

sequences(5'to3')

GAPp-R1

ATatactcgagTCATTATCAATACTGCCATTTCAAAG

GA-GAPp-F1

caatctgatcatTTTGTTTGTTTATGTGTGTTTATTC

GAPp-GA-R1

CATAAACAAACAAAatgatcagattgaccgttttc

CYC1t-GA-F1

cataactaattacatgattacaataattcgatcaacttg

X-2-CYC1t-F1

atatagagctcgcaaattaaagccttcgagcgtcccaaaac

GA-CYC1t-R1

gttgatcgaattattgtaatcatgtaattagttatgtcac

 

Primer

sequences(5'to3')

X-2-TEF1p-F1

GATGGgtttaaaccatagcttcaaaatgtttctactc

GA-TEF1p-R1

cggtcaatctgatcatcttagattagattgctatgc

ADH1t-GA-R1

aatcataagaaattcgcttacaataattcgatcaacttg

        TEF1p-GA-F1

gcaatctaatctaagatgatcagattgaccgttttc

X-2-ADH1t-R1

       tttgcgagctcccggtagaggtgtggtcaataag

GA-ADH1t-F1

tgatcgaattattgtaagcgaatttcttatgatttatg

For XII-5-GA

PCR system:

Name

XII-5-GAP(690bp)

Volume (μl)

Name

GA(1579bp)

Volume(μl)

Name

XII-5-CYC1t(278bp)

Volume(μl)

2mix

25

2mix

25

2mix

25

GAPp-R1

2

GAPp-GA-R1

2

XII-5-CYC1t-F1

2

GAPp-F1

2

CYC1t-GA-F1

2

GA-CYC1t-R1

2

CCTCC M94055

1.5

GA

1.5

CCTCC M94055

1.5

ddH2O

19.5

ddH2O

19.5

ddH2O

19.5

Total

50

Total

50

Total

50

Name

XII-5-TEF1p

Volume

(μl)

Name

XII-5-GA (1580bp)

Volume

(μl)

Name

XII-5-ADH1t (216bp)

Volume

(μl)

2mix

25

2mix

25

2mix

25

XII-5-TEF1p-F1

2

ADH1t-GA-R1

2

GA-ADH1t-F1

2

GA-TEF1p-R1

2

TEF1p-GA-F1

2

XII-5-ADH1t-R1

2

pH Cas9

1.5

GA

1.5

CCTCC M94055

1.5

ddH2O

19.5

ddH2O

19.5

ddH2O

19.5

Total

50

Total

50

Total

50

 

 

The primer sequences for PCRXII-5-GA-2are as follows :

Primer

sequences(5'to3')

GAPp-R1

ATatactcgagTCATTATCAATACTGCCATTTCAAAG

GA-GAPp-F1

caatctgatcatTTTGTTTGTTTATGTGTGTTTATTC

GAPp-GA-R1

CATAAACAAACAAAatgatcagattgaccgttttc

        CYC1t-GA-F1

cataactaattacatgattacaataattcgatcaacttg

XII-5-CYC1t-F1

       ATATAactagtgcaaattaaagccttcgagcgtccc

GA-CYC1t-R1

gttgatcgaattattgtaatcatgtaattagttatgtcac

 

Primer

sequences(5'to3')

XII-5-TEF1p-F1

ACCGTgtttaaaccatagcttcaaaatgtttctactcc

GA-TEF1p-R1

cggtcaatctgatcatcttagattagattgctatgc

ADH1t-GA-R1

aatcataagaaattcgcttacaataattcgatcaacttg

        TEF1p-GA-F1

gcaatctaatctaagatgatcagattgaccgttttc

GA-ADH1t-F1

       tgatcgaattattgtaagcgaatttcttatgatttatg

XII-5-ADH1t-R1

atttgcactagtccggtagaggtgtggtcaataagag

 

For XI-2-temA

PCR system

Name

XI-2-GAP278bp

Volume

(μl)

Volume

XI-2-temA-1888bp

Volume

(μl)

Name

XI-2-CYC1t-273bp

Volume

(μl)

2mix

25

2mix

25

2mix

25

XI-2-GAPp-F1

2

D-GAPp-temA-F1

2

D-temA-CYC1t-F1

2

D-TemA-GAPp-R1

2

D-CYC1t-temA-R1

2

XI-2-CYC1t-R1

2

CCTCC M94055

1.5

TemA

1.5

CCTCC M94055

1.5

ddH2O

19.5

ddH2O

19.5

ddH2O

19.5

Total

50

Total

50

Total

50

 

Name

XI-2-TEF1p-423bp

Amount(μl)

Name

XI-2-temA-1886bp

Amount(μl)

Name

XI-2-ADH1t-214bp

Amount(μl)

2mix

25

2mix

25

2mix

25

D-temA-TEF1p-F1

2

D-ADH1t-temA-F1

2

XI-2-SacI-R1

2

XI-2-Mss1-R1

2

D-TEF1p-temA-R1

2

D-temA-ADH1t-R1

2

pH Cas9

1.5

temA

1.5

CCTCC M94055

1.5

ddH2O

19.5

ddH2O

19.5

ddH2O

19.5

Total

50

Total

50

Total

50

 

The primer sequences for PCRXI-2-temA-2are as follows : 

Primer

sequences(5'to3')

XI-2-GAPp-F1

TataggcgcgccTCATTATCAATACTGCCATTTC

D-temA-GAPp-R1

aaaggcgtcatTTTGTTTGTTTATGTGTG

D-GAPp-temA-F1

CAAACAAAatgacgcctttcgtcctc

D-CYC1t-temA-R1

taattacatgactatctccatgtgtcgac

D-temA-CYC1t-F1

acacatggagatagtcatgtaattagttatgtc

XI-2-CYC1t-R1

 

 

Primer

sequences(5'to3')

D-temA-TEF1p-F1

aaggcgtcatcttagattagattgctatg

XI-2-Mss1-R1

TACCCgtttaaaccatagcttcaaaatgtttctactc

D-ADH1T-temA-F1

aaattcgcctatctccatgtgtcgac

D-TEF1p-temA-R1

taatctaagatgacgcctttcgtcctc

X-2-Sac1-R1

tttgcgagctcccggtagaggtgtggtcaataag

D-temA-ADH1t-R1

acacatggagataggcgaatttcttatgatttatg

 

For X-3-temA

PCR system:

 

Name

X-3--GAP278bp

Amount(μl)

Name

X-3-temA-1888bp

Amount(μl)

Name

X-3-CYC1t-273bp

Amount(μl)

2mix

25

2mix

25

2mix

25

XI-2-GAPp-F1

2

D-GAPp-temA-F1

2

D-temA-CYC1t-F1

2

D-TemA-GAPp-R1

2

D-CYC1t-temA-R1

2

XI-2-CYC1t-R1

2

CCTCC M94055

1.5

TemA

1.5

CCTCC M94055

1.5

ddH2O

19.5

ddH2O

19.5

ddH2O

19.5

Total

50

Total

50

Total

50

 

Name

X-3-TEF1p-423bp

Amount(μl)

Name

X-3-temA-1886bp

Amount(μl)

Name

X-3-ADH1t-214bp

Amount(μl)

2mix

25

2mix

25

2mix

25

D-temA-TEF1p-F1

2

D-ADH1t-temA-F1

2

XII-5-Bcu1-R1

2

X-3-Mss1-R1

2

D-TEF1p-temA-R1

2

D-temA-ADH1t-R1

2

pH Cas9

1.5

temA

1.5

CCTCC M94055

1.5

ddH2O

19.5

ddH2O

19.5

ddH2O

19.5

Total

50

Total

50

Total

50

 

The primer sequences for PCRX-3-temA-2are as follows :

Primer

sequences(5'to3')

XI-2-GAPp-F1

TataggcgcgccTCATTATCAATACTGCCATTTC

D-temA-GAPp-R1

aaaggcgtcatTTTGTTTGTTTATGTGTG

D-GAPp-temA-F1

CAAACAAAatgacgcctttcgtcctc

D-CYC1t-temA-R1

taattacatgactatctccatgtgtcgac

D-temA-CYC1t-F1

acacatggagatagtcatgtaattagttatgtc

XI-2-CYC1t-R1

 

 

Primer

sequences(5'to3')

D-temA-TEF1p-F1

aaggcgtcatcttagattagattgctatg

X-3-Mss1-R1

AGTGGgtttaaaccatagcttcaaaatgtttc

D-ADH1T-temA-F1

aaattcgcctatctccatgtgtcgac

D-TEF1p-temA-R1

taatctaagatgacgcctttcgtcctc

XII-5-Bcu1-R1

atttgcactagtccggtagaggtgtggtcaataagag

D-temA-ADH1t-R1

aaattcgcctatctccatgtgtcgac

 

Apparatus

Amount

PCR

1

Procedure in the form of PCR program setting chart

Step

Temperature()

Time

1

95

5min

2

95

30sec

3

55

30sec

4

72

2min

5

72

10min

6

4

Forever

                  Repeat Step2-4 for 30 times

 

Agarose Gel Electrophoresis

Material

Reagent

Volume/mass

TAE buffer

/

Agarose

1g

Gel Red (nucleic acid dye)

5ul

DNA marker

10ul

 

Apparatus

Amount

Electrophoresis apparatus

1

Microwave

1

Erlenmeyer Flask

1

Gel tray

1

Blue light transilluminator

2

Procedure:

1. Add 100ml TAE buffer into the Erlenmeyer Flask, weigh 1g agarose and place it into the Erlenmeyer Flask.

2. Heat the Erlenmeyer Flask in the microwave till the components melt completely. Take out and shake it well.

3. Add 5ul <  nucleic acid Gel Red to the agarose gel.

4. Assemble the gel tray and comb. Pour the liquid gel mildly onto the gel tray, remove the bubble, insert a comb on a gel, wait for solidification of gel.

5. Take out the comb, transfer the solidified gel to the electrophoresis tank, add TAE buffer till the gel is immersed completely.

6. Add samples into each sampling hole respectively and record the order, add 10ul DNA Marker after adding samples.

7. Power on with 180 V for 15min.

8. Take out and place the gel under the blue light Transilluminator for observation.

 

Gel Extraction

Material

Reagent

Volume/mass

Buffer B3

250ul

Washing solution

1ml

Elution buffer

500ul

 

Apparatus

Amount

centrifuge

1

Vortex oscillator

2

1.5ml centrifuge tube

1

Absorption column

1

Procedure

1. Cut out the target section from gel according to its position shown under blue light transilluminator.

2. Transfer the product to 1.5ml centrifuge tube, add 250μl buffer B3, vortex it on the vortex oscillator.

3. Transfer the mixture to the absorption column, centrifuge under 8000 rpm for 30 seconds, discard the filtrate.

4. Add 500μl Washing solution, centrifuge under 9000 rpm for 1min, discard the filtrate.

5. Repeat Step 4

6. Centrifuge under 9000 rpm for 1min.

7. Add 20μl  Elution buffer into absorption film, place it under room temperature for 1-2 min, centrifuge under 9000 rpm for 1min, obtain the DNA.

8. Measure the concentration of DNA, store it under the temperature of -20 .

 

Overlap Extension PCR (Over PCR)

Materials

For X-2-GA plasmid

PCR system:

 

Name

X-2-GAP-GA-CYC1t-2485bp

Amount(μl)

Name

X-2-TEF1-GA-ADH1-2160bp

Amount(μl)

2mix

25

2mix

25

GAPp-R1

2

X-2-TEF1p-F1

2

X-2-CYC1t-F1

2

X-2-ADH1t-R1

2

X-2-GAP

1

X-2-TEF1

1

GA

1

X-2-GA

1

X-2-CYC1t

1

X-2-ADH1

1

ddH2O

18

ddH2O

19.5

Total

50

Total

50

The primer sequences for PCRX-2are as follows :

Primer

sequences(5'to3')

GAPp-R1

ATatactcgagTCATTATCAATACTGCCATTTCAAAG

X-2-CYC1t-F1

atatagagctcgcaaattaaagccttcgagcgtcccaaaac

X-2-TEF1p-F1

GATGGgtttaaaccatagcttcaaaatgtttctactc

GA-TEF1p-R1

cggtcaatctgatcatcttagattagattgctatgc

 

 

 

For XII-5-GA plasmid

PCR system:

Name

XII-5-GAP-GA-CYC1t-2485bp

Amount(μl)

Name

XII-5-TEF1-GA-ADH1-2160bp

Amount(μl)

2 mix

25

2mix

25

GAPp-R1

2

XII-5-TEF1p-F1

2

XII-5-CYC1t-R1

2

XII-5-ADH1t-R1

2

XII-5-GAP

1

XII-5-TEF1

1

XII-5-GA

1

XII-5-GA

1

XII-5-CYC1t

1

XII-5-ADH1

1

ddH2O

18

ddH2O

19.5

Total

50

Total

50

The primer sequences for PCRXII-5are as follows :

Primer

sequences(5'to3')

GAPp-R1

ATatactcgagTCATTATCAATACTGCCATTTCAAAG

XII-5-CYC1t-R1

atttgcactagtccggtagaggtgtggtcaataagag

X-2-Sac1-R1

tttgcgagctcccggtagaggtgtggtcaataag

D-temA-ADH1t-R1

acacatggagataggcgaatttcttatgatttatg

 

 

 

For XI-2-temA

PCR system:

Name

XI-2-GAP-GA-CYC1t-2804 bp

Amount(μl)

Name

XI-2-TEF1-GA-ADH1-2160bp

Amount(μl)

2 mix

25

2mix

25

X-2-CYC1t-F1

2

X-2-Sac1-R1

2

XI-2-GAPp-F1

2

D-temA-ADH1t-R1

2

XI-2-GAP

1

XI-2-TEF1

1

XI-2-GA

1

XI-2-GA

1

XI-2-CYC1t

1

XI-2-ADH1

1

ddH2O

18

ddH2O

19.5

Total

50

Total

50

 

The primer sequences for PCRXI-2are as follows :

Primer

sequences(5'to3')

X-2-CYC1t-F1

atatagagctcgcaaattaaagccttcgagcgtcccaaaac

XI-2-GAPp-F1

TataggcgcgccTCATTATCAATACTGCCATTTC

X-2-Sac1-R1

tttgcgagctcccggtagaggtgtggtcaataag

D-temA-ADH1t-R1

acacatggagataggcgaatttcttatgatttatg

 

 

 

For X-3-temA

PCR system:

Name

X-3-GAP-GA-CYC1t-2804 bp

Amount(μl)

Name

X-3--TEF1-GA-ADH1-2160bp

Amount(μl)

2 mix

25

2mix

25

XI-2-GAPp-F1

2

XII-5-Bcu1-R1

2

XII-5-CYC1t-R1

2

X-3-Mss1-R1

2

X-3--GAP

1

X-3--TEF1

1

X-3--GA

1

X-3--GA

1

X-3--CYC1t

1

X-3-ADH1

1

ddH2O

18

ddH2O

19.5

Total

50

Total

50

 

The primer sequences for PCRX-3are as follows :

Primer

sequences(5'to3')

XI-2-GAPp-F1

TataggcgcgccTCATTATCAATACTGCCATTTC

XII-5-Bcu1-R1

atttgcactagtccggtagaggtgtggtcaataagag

X-3-Mss1-R1

AGTGGgtttaaaccatagcttcaaaatgtttc

XII-5-CYC1t-R1

atttgcactagtccggtagaggtgtggtcaataagag

 

 

 

Apparatus

Amount

PCR

1

 

Procedure in the form of PCR program chart

Step

Temperature℃)

Time

1

95

5min

2

95

30sec

3

55

30sec

4

72

2min

5

72

10min

6

4

Forever

                 Repeat step 2-4 for 30 times

 

 

Restriction Endonuclease Digestion and Ligation

For X-2 restriction endonuclease digestion system:

Name

 

Amount(μl)

Name

Volume(μl)

X-2 plasmid skeleton

30

X-2-GAP-GA-CYC1t

30

Cut Smart Buffer

5

Cut Smart Buffer

5

Xho1

1

Xho1

1

Sac1

1

Sac1

1

ddH2O

13

ddH2O

13

Total

50

Total

50

For XII-5 restriction endonuclease digestion system:

Name

 

Volume(μl)

Name

Volume(μl)

XII-5 plasmid skeleton 

30

XII-5-GAP-GA-CYC1t

30

Cut Smart Buffer

5

Cut Smart Buffer

5

Xho1

1

Xho1

1

Bcu1

1

Bcu1

1

ddH2O

13

ddH2O

13

Total

50

Total

50

For XI-2 restriction endonuclease digestion system:

Name

 

Amount(μl)

Name

Amount(μl)

XI-2 plasmid skeleton

30

XI-2-GAP-GA-CYC1t

30

Cut Smart Buffer

5

Cut Smart Buffer

5

Sac1

1

Sac1

1

Sgs1

1

Sgs1

1

ddH2O

13

ddH2O

13

Total

50

Total

50

For X-3 restriction endonuclease digestion system:

Name

 

Volume(μl)

Name

Volume(μl)

X-3 plasmid skeleton

30

XI-2-GAP-GA-CYC1t

30

Cut Smart Buffer

5

Cut Smart Buffer

5

Bcu1

1

Bcu1

1

Sgs1

1

Sgs1

1

ddH2O

13

ddH2O

13

Total

50

Total

50

 

Ligation PCR system:

Name

 

Volume(μl)

Plasmid skeleton (eg. X-2)

4

Inserted gene (eg. X-2-GAP-GA-CYC1t)

16

T4 ligase

1

T4 ligase buffer

5

ddH2O

25

Total

50

 

Apparatus

Amount

PCR

1

 

 Procedure

1. Prepare restriction endonuclease digestion PCR system

2. Do restriction endonuclease digestion under 37 PCR for 30min.

3. Take out and reclaim the reagents, prepare the Ligation system according to the material chart.

4. Do Ligation under 16 PCR for 1.5 hours.

 

Competent cell preparation and Yeast Cell Transformation

Material

Reagent

Volume/mass

PEG 3350 (500g/L)

240ul

LiAc (1M)

36ul

Salmon sperm ssDNA(2ml/L)

50ul

ddH2O

/

Peptone

10g

Beef extract

5g

NaCl

5g

Soluble Starch

2g

Agar

15g

1974 yeast cultured

200ul

YEPD culture media

1ml

DNA (GA+ temA) after Over PCR+ ddH2O

34ul

Sterile water

25ml

 

Apparatus

Amount

Nanodrop

1

Centrifuge

2

1.5ml Centrifuge Tube

1

Box with ice

1

Water bath

1

Constant temperature shaker

1

Constant temperature incubator

1

Vortex oscillator

2

Electronic Balance

1

 

Procedure:

1. Dilute yeast liquid (over-night cultured) to 1/10 concentration, test OD600 of diluted liquid.

2. Transfer the diluted yeast liquid to 250 ml Erlenmeyer flask with 25ml 2*YEPD culture medium.

3. Culture the yeast under the temperature of 30, 240r/min in constant temperature shaker till its OD600 is 0.3-0.8.

4. 3000 rpm Centrifuge the yeast liquid for 5min for collecting yeast.

5. Add 25ml sterile water to suspend the yeast, 3000rpm centrifuge under the temperature of 20 for 5min.

6. Repeat the Step 5 twice.

7. Add 1 ml sterile water to suspend the yeast, transfer the yeast liquid to 1.5ml centrifuge tube, 12000rpm centrifuge for 30s, discard the supernatant liquid, collect the competent yeast cell.

8. Prepare components for LiAc transformation liquid reagent according to the chart.

Reagent

Formula

PEG 3350 (500g/L)

25g PEG 3350 + 50ml ddH2O

LiAc (1M)

4.94g LiAc + 50ml ddH2O

Salmon sperm DNA (2mg/L)

0.02g ssDNA+10ml ddH2O. Place the 2mg/L ssDNA in 100 water bath for 5min, take it out and put it on the ice rapidly

9. AddHO 240ul  PEG 3350 (500g/L), 36ulLiAc (1M), 50ul ssDNA and 34 ul DNA (GA, temA) to centrifuge tube with competent cells in order.

10. Water bath the mixture under the temperature of 42for 15min, 12000 centrifuge for 30 seconds, discard the supernatant liquid, add 1ml YEPD liquid culture media, suspend yeast, seal the opening.

11. Place it in the 240rpm constant temperature shaker under the temperature of 30for 1 hour. 3000rpm Centrifuge for 4min, discard 600ul supernatant liquid.

12. Add 5g beef extract, 10g Peptone, 5g NaCl, 2g soluble starch and 15g agar, add ddH2O till the solution volume is up to 1 L, sterilize under 115 for 20min. (Preparation of soluble-starch solid culture media)

13. Evenly distribute the yeast on the plate with soluble-starch solid culture media, place the sealed plate up-side down in the incubator for two days under 30.

 

Ultrasonic Cell Disruptor

Material

Reagent

Volume/mass

Yeast GA-temA

/

Yeast 1947

/

Protein extract solution

15ml

 

Apparatus

Amount

50ml centrifuge tube

2

Ultrasonic Disruptor

1

 

Procedure:

1. Transfer the yeast GA-temA and yeast 1974 to 50ml centrifuge tube, 8000rpm centrifuge for 5min, discard the supernatant liquid, add nutrition materials on the precipitate

2. 8000 rpm centrifuge for 5min, collect all the nutrition materials.

3. Add 15ml Protein extract solution (100mmol/L NaCl, 10mmol/L EDTA, pH8.0), use pipette to blow to suspend the precipitate.

4. Put the centrifuge tube on the test-tube stand, put the metal head of ultrasonic disruptor into the centrifuge tube, adjust the position of the tube, turn on the ultrasonic disruptor.

5. Ultrasonically disrupt the yeast with 80W Power for 2 seconds and 2 seconds of interval, 5 cycles once, the total disruption lasts for 20min.

6. 8000rpm centrifuge for 5min.

7. Take out centrifuge tube, carefully transfer the supernatant liquid to a new centrifuge tube, store under 4.   

 

SDS-PAGE electrophoresis

Material

Reagent

Volume/mass

Yeast 1974

/

Recombinant yeast

/

YPD-G418 liquid culture media

50ml

Protein buffer

/

 

Apparatus

Amount

Centrifuge

2

Water bath

1

SDS PAGE

1

Coomassie Blue Staining Kit

1

Procedure:

1. Inoculate yeast 1974 and recombinant saccharomyces cerevisiae to 50ml YPD-G418 liquid culture media, culture them under 30, 240rpm in constant temperature incubator for 72 hours.

2. Add protein buffer into the supernatant liquid after centrifuge, 100water bath for 5min for denaturation.

3. Do SDS-PAGE electrophoresis for recombinant GA-temA yeast and original saccharomyces cerevisiae 1974 under 130V for 30min for concentration, turn the volt to 90V and continue separation for 60min.

4. Dye the SDS-PAGE gel through Coomassie Blue Staining Kit.

 

Iodine Staining, Transparent Circle Observation and Enzymatic Activity Test

Material

Reagent

Volume/mass

Recombinant yeast GA-temA

/

Yeast 1974

/

Iodine

0.13g

Iodide potassium

0.35g

ddH2O

250 ml

Citric Acid

101g

Sodium citric

941g

Starch

0.2g

 

Apparatus

Amount

Constant temperature shaker

1

Nanodrop

1

 

Procedure:

1. Mix 101g citric acid and 100ml ddH2O for preparation of citric acid solution A

2. Mix 941g sodium citric acid and 100ml ddH2O for preparation of sodium citric solution B

3. Weigh 27.5g solution A and 72.5g solution B, add 0.2g starch, adjust the pH value to 3, 4, 5, 6 and 7 respectively (soluble starch solution with different pH values).

4. Dissolve 0.13g iodine and 0.35g iodide potassium in 50ml ddH2O.

5. Add small amount of iodine solution to the soluble-starch solid culture medium with yeast 1974 and recombinant yeast GA-temA, observe the transparent circle.

6. Add original yeast 1974 and recombinant yeast GA-temA to soluble-starch solution with pH values of 3, 4, 5, 6 and 7 respectively.

7. Inoculate yeast 1974 and recombinant yeast GA-temA to 3ml YPD test, culture it under 30, 240rpm in the constant temperature shaker overnight.

8. Take the culture liquid and dilute it to 1/10 concentration, test the OD600 value through nanodrop.

9. Inoculate 200ul yeast liquid to 50ml YEPD liquid culture media, culture under 30 , 240rpm in the constant temperature shaker for 72 hours.

10.  Take proper amount of yeast liquid, 12000rpm centrifuge for 10min for enzymatic activity test.

 

Alcohol content determination

1.Yeast 100ul 1974 and 1974-GA-temA were added to 100ml YPD, and then 100 Amp was added, cultured at 37 °C for 24h, 36h, 72h.

2. The sample 12000Xg was centrifuged for 10 min, and the supernatant solution was taken to measure the alcohol content of 100ul 1974 and 1974-GA-temA with the alcohol Megazyme kit. ( Ethanol Assay Kit )