Team:Freiburg/Labjournals/Cloning/May

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Cloning

2015/05/01

DpnI digest of the PCR fragments (RE)

  • 2 µl DpnI added to each sample
  • incubation at 37°C for 60 min
  • heat inactivation at 80°C for 20 min

PCR clean-up (RE)

  • used Roche kit
  • according to the instructions
  • eluted in 100 µl elution buffer

NanoDrop analysis (RE)

Fragmentconcentration [ng/µl]
lacI32.7
CMV56.9
WPRE24.8
T7 promoter20.6
T7 terminator12.8
TurboYFP (1)34.3
TurboYFP (2)39.3

(high 220 nm absorption in all samples)

Restriction Digests (RE)

  1. TurboYFP:
  • 20 µl TurboYFP PCR product (1)→ 700 ng
  • 0.7 µl of each restriction enzyme (SalI + NotI)
  • 3 µl NEB Buffer 3.1
  • 6.6 µl ddH2O

–> total volume: 30 µl

  1. pET51b+:
  • 2 µl pET51b+ → 100 ng
  • 0.1 µl of each restriction enzyme (SalI + NotI)
  • 2 µl NEB CutSmart buffer
  • 15.8 µl ddH2O

–> total volume: 20 µl

  1. pSB1C3:
  • 4 µl linearized backbone → 100 ng
  • 0.1 µl of each restriction enzyme (EcoRI and SpeI)
  • 2 µl NEB CutSmart Buffer
  • 13.8 µl ddH2O

–> total volume: 20 µl

  • Incubation at 37°C for 15 min (HF restriction enzymes); Heat inactivation at 80°C for 20 min

Preparation of Gibson Master Mix (RE)

  • 100 µl ISO buffer (5x)
  • 0.2 µl T5 Exonuclease (10 U/µl; NEB)
  • 6.25 µl Phusion Polymerase (2 U/µl; NEB)
  • 50 µl Taq Ligase (40 U/µl; NEB)
  • 218.55 µl ddH2O

–> total volume: 375 µl; 15 µl aliquots stored at -20°C

Ligation of TurboYFP and pET51b+ (RE)

  • according to wiki protocol

–> pIG15_101

Gibson Assembly (RE)

  • pIG15_001
  • pIG15_002 (1x with self-made Gibson-MM, 1x with Gibson-MM from Philipp)
  • according to wiki protocol

Transformation in E. coli TOP10 (RE)

  • pIG15_001 (on LB-Cml)
  • pIG15_002 (2x) (on LB-Cml)
  • pIG15_101 (on LB-Amp)
  • according to wiki protocol
  • 15 µl were spread on the plates
  • o/n at 37°C

2015/05/02

Transformation results (RE)

  • pIG15_101 –> 3 colonies
  • pIG15_002 –> 3 colonies
  • pIG15_001 –> nothing

Repetition of the Trafo (RE)

  • changes:
  • 2 µl plasmid
  • 30 µl spread on the plates

2015/05/03

Mini-Prep: pIG15_101 and pIG15_002 (RE)

  • pIG15_101 (3x) and pIG15_002 (2x) are prepped with the PeqLab-Kit
  • according to the manufacturers protocol
  • eluted in 50 µl Elution Buffer

Nano-Drop (RE)

constructconcentration [ng/µl]
pIG15_101 (1) 83.3
pIG15_101 (2) 78.1
pIG15_101 (3) 70.2
pIG15_002 (1) 205.5 –> sequencing (2015/05/08): correct
pIG15_002 (2) 201.9 –> sequencing (2015/05/08): correct

Test Digests (RE)

  1. pIG15_101 was digested with SalI-HF and BamHI-HF
  • 0.25 µl of each enzyme
  • 1 µl CutSmart buffer
  • 250 ng plasmid
  1. pIG15_002 was digested with EcoRI-HF and PstI
  • 1 µl of each enzyme
  • 2 µl CutSmart buffer
  • 1 µg plasmid
  • incubation for 20 min at 37°C; heat inactivation for 20 min at 80°C

Gel Electrophoresis (RE)

  • 1% agarose gel; 120 V for ~45 min
pIG15_101 was not digested as expected, whereas pIG15_002 was digested into the two fragments (~2 kb and ~1.3 kb) which were expected.

2015/05/08

PCR to verify insertion of TYFP in plasmid construct (LS)

  • Test with 3 plasmids: YFP 1, YFP 2, YFP 3 –> test digest didn't give clear results
  • PCR with: oIG15_101 + oIG15_102
  • 4x Master Mix
volume
Buffer 16µl
oIG15_1024µl
oIG15_1024µl
dNTPS1,6µl
DMSO2,4µl
Phusion HF0,8µl
Template0,5µl
H2O50,7
  • Cycling
Temperaturetime
92°C180s
92°C20s
60°C20s
72°C20s
72°C10 min
4°Cinfinite

–>22 cycles

Analysis of PCr on 1% agarose gel (RE)

  • 120, ~40 min
  • no PCR product visible

2015/05/10

Repetition of PCR to verify insertion of TYFP in plasmid construct (LS)

  • Test with 3 plasmids: YFP 1, YFP 2, YFP 3 –> test digest didn't give clear results
  • PCR with: oIG15_101 + oIG15_102
  • 10x Master Mix (9x with 10ng template + 9x with 1ng template)
volume
Buffer 40µl
oIG15_10210µl
oIG15_10210µl
dNTPS4µl
DMSO6µl
Phusion HF2µl
Template0,3/0,03µl
H2O126,75/127,875
  • Cycling
Temperaturetime
92°C180s
92°C20s
60°C*20s
72°C20s
72°C10 min
4°Cinfinite

–>gradient from 60°C to 68°C; 30 cycles

Digest (LS)

pET51b+

  • 1 µl SalI-HF
  • 1 µl NotI-HF
  • 2 µl CutSmart buffer
  • 2 µl plasmid (100 ng)
  • 14 µl H2O

TurboYFP (2)

  • 1 µl SalI-HF
  • 1 µl NotI-HF
  • 2 µl CutSmart buffer
  • 14.8 µl plasmid (560 ng)
  • 1.2 µl H2O

–> 15 min at 37°C; heat inactivation 10 min at 80°C

Vector dephosphorylation (LS)

  • total digest product
  • 1 µl antarctic phosphatase (NEB)
  • 2 µl antarctic phosphatase buffer (NEB)
  • up to 60µl dH2O

–> 1 h at 37°C

T4 Ligase buffer aliquoted (LS)

–> 16 µl per aliquot; stored at -20°C with the other buffers

2015/05/12

PCR for parts of the pIG expression plasmid

  • 4x Master Mix:
Ingredientvolume [µl]
Phusion GC Buffer16
Phusion pol0.8
dNTP Mix1.6
DMSO2.4
ddH2o50.7

+ 1 µl of forward and reverse primer, respectively

fwdrevfragment
oIG15_001foIG15_002rlacI
oIG15_007foIG15_008rT7 promoter
oIG15_009foIG15_010rT7 terminator

–> final volume per sample: 20 µl

  • Cycling conditions as on 2015/05/08

–> analyzed on 1% agarose gel:

  • image could not be saved on the stick
  • lacI was amplified
  • T7 promoter and terminator: no bands on the gel
  • Marker lane: also nothing seen on the gel…

2015/05/12

Repetition of PCR for LacI, T7 Promotor and T7 terminator (LS)

  • Same mix and cycling conditions as on 2015/05/08

2015/05/13

Gel-Ex of yesterday's PCR product (LS)

  • Qiagen kit
  • eluted in 50 µl
  • Nanodrop:
FragmentConcentration [ng/µl]
lacI 14.8
T7 terminator 18.4
T7 promoter 21.8

Gibson (LS)

  • Gibson trafo into E. coli TOP10 according to the wiki protocol
  • DNA-Mix: 1.7 µl pSB1C3 (digested), 2.95 µl lacI, 0.19 µl T7 terminator, 0.16 µl T7 promoter
  • total cells spread on two plates LB(cml)

Transformation of pET51b(+) and pET22b(+) into E.coli T10 (LS)

  • according to protocol
  • 100 µl each spread on LB(amp)
  • inoculation of 5 ml LB + Ampicillin each
  • incubation at 37°C o/n.

2015/05/14

Miniprep (LS)

  1. pET22b+ –> 133,7 ng/µl
  2. pET51 –> 136,1 ng/µl

Inoculation of liquid culture: pIG15_001 (LS)

  • streaked out 8 colonies from transformation plates on new LB (+chloramphenicol 25µg/ml) plates
  • inoculation of lb (+chloramphenicol) with same colonies
  • incubation at 37°C

2015/05/15

PCR for tYFP insert and gBLock insert (LS)

  • tYFP
  • insert for pIG15_001 from gBlock
MM tYFPMM insert
Buffer 16µl8µl
oIG15_1024µl2µl
oIG15_1024µl2µl
dNTPS1,6µl0,8µl
DMSO2,4µl1,2µl
Phusion HF0,8µl0,4µl
Template0,2µl0,58µl
H2O50,78µl

PCR program:

stepT[°C]t[s]
initial denaturation92180
denaturation9220
annealing6020
extension7230
final extension72600

–>PCR didn't work for tYFP, for the gBlock insert the fragment showed a weak band at the right size, but the concentration was only: 17,1 ng/µl.

Miniprep: 8 clones from pIG15_001 (LS)

clone numberconcentration (ng/µl)test digest(EcoRI + PstI)comment
1196,4insert :)
2187,4no insert :(
3182,1insert :)
4215,5insert :)
5212,1insert :)
6259,2insert :) –> sequencing (2015/05/18): correct
7120,1(maybe insert…)
8169,4insert :) –> sequencing (2015/05/18): correct
Test digest
5µlplasmid
0,5µlEcoRI HF
0,5µlPstI HF
1µlCUt Smart
3µldH2O
  • incubation at 37°C, 1h
Something was wrong with the agarose, but the bands are still visible. Clone 2 and 7 did not show a positive test digest, but the rest was fine. Clone 6 and 8 were sent for sequencing, both with correct results.

Gibson Assembly: pIG15_001 (LS)

Gibson Assembly
pSB1C3 (digested with EcoRI and SpeI) 2,36µl
gBlock insert (=T7 promotor without Xba1 restriction site) 0,52µl
T7 terminator0,65µl
lacI 1,57µl
  • incubation at 50°C for ~1h
  • 3 min cool down
  • 3 min incubation on ice
  • transformation (7,5µl) in E.coli Top 10 (according to protocol)
  • plated cells on LB plate with chloramphenicol

2015/05/16

Gibson Assembly: checking plates (LS)

  • didn't work, no clones visible on LB-chloramphenicol plates

PCR for tYFP + gBLock T7P

  • same procedure as last time
  • really bad gel:
  • gel-ex:
  • nearly no result, concentration below 5ng/µl
  • nothing for the gBLockT7P

2015/05/17

Gibson Assembly: checking plates (LS)

  • still no clones visible
  • chucked the plates

repetition of PCR: gBlockT7P and tYFP (LS)

  • different denaturation temperature (98°C)
  • again bad gel pic:

[No bands for the gBlock fragment; slight bands for tYFP. Gel-ex: after clean-up nothing was left


Repetition of PCR again for tYFP (LS)

  • slight bands on the gel
  • this time clean-up from PCR product directly without gel-ex (Roche kit)
  • again: nothing!!!

Repetition of PCR: gBLock with gradient for annealing temperature: 55°C-65°C (LS)

  • 55°C: nice band
  • ~58°C: slight band
  • >60°C: nothing

Repetition of PCR: tYFP

  • PCR worked :)

  • blunt-end ligation of pJEt and tYFP
  • Gibson of pSB1C3 and gBLock T7P + T7T+lacI
  • transformation in E.coli Top 10
  • plated on LB-Amp/LB-Chloramphenicol
  • incubation at 37°C

2015/05/19

Gibson Assembly: checking plates (LS)

  • no colonies on LB-chloramphenicol plates (gBlock T7P in pSB1C3)
  • colonies on LB-AMp plates for blunt-end ligation of tYFP in pJET
  • picked 6 clones
  • incubation (shaking) at 37°C in liquid LB-Amp for ~8h
  • mini-prep of 4 clones (the other 2 did't grow)

Restriction digest (LS)

  • pET51 and tYFP (in pJET) with SalI and NotI
  • additional: dephosphorylation of pET51
ingredientvolume (pJET)volume (pET51)
DNA 5µl 5µl
SalIHF 1µl 1µl
NotI 1µl 1µl
NEB buffer 3.1 5µl 5µl
dH2O 38µl 32µl
Antarctic phosphatase 1µl
Antarctic phosphatase buffer 5µl
  • incubation at 37°C for 1h
  • gel-run of digest
  • digest didn't work

2015/05/20

Gibson Assembly: gBLock T7P in pSB1C3 + T7T +LacI (LS)

  • still no clones on LB-chloramphenicol plates
  • Gibson didn't work

PCR: Antigen 4 (DV) and Antigen 9 (HSV1) (LS)

  • primer: * oIG15_401 and oIG15_402
    • oIG15_801 and oIG15_802
ingredientpIG15_402 (173ng/µl)pIG15_802 (214ng/µl)
Buffer 12 12
Primer 3 3
Phusion 0,6 0,6
dNTPs 1,2 1,2
DMSO 1,8 1,8
dH2O 38,23 38,26
Template 0,17 0,14
  • cycle:
temperaturetime
92°C 3min
92°C 20s
60°C 20s
72°C 20s
72°C 10 min
4C infinite
  • gel-run: Antigen 4(DV) didn't work, Antigen 8 (HSV1)–>gel-ex: concentration: 9,9ng/µl

PCR: 3×50µl gBlock T7P (LS)

ingredientvolume
Buffer 30
Primer 7,5
Phusion 1,5
dNTPs 3
DMSO 4,5
dH2O 95,12
Template 0,88
temperaturetime
92°C 3min
92°C 20s
60°C 20s
72°C 20s
72°C 10 min
4C infinite
  • analysis on 1% agarose gel/ gel-ex
  • concentration: 105ng/µl

PCR: Antigen 4(DV) 2×20µl (LS)

ingredientvolume
Buffer 8
Primer 2
Phusion 0,4
dNTPs 0,8
DMSO 1,2
dH2O 25,54
Template 0,06
temperaturetime
92°C 3min
92°C 20s
60°C 20s
72°C 20s
72°C 10 min
4C infinite
  • analysis on 1% agarose gel/ gel-ex
  • concentration: 23,4ng/µl

Sequencing (RE)

  • Spy-tag (2x): oIG15_s001
  • Spy-catcher (2x): oIG15_s001
  • pIG15_001 (clone 6 and 8): oIG15_s003
  • pET51b+: T7minus1 (GATC Standard)

2015/05/21

Digest and dephosphorylation (RE)

  • pIG15_001 (6) - prokaryotic backbone (BamHI and AflII)
  • pIG15_002 (1) - eukaryotic backbone (BamHI and AflII)
  • pSB1A3 - linearized standard backbone (EcoRI and SpeI)
  • 1 µg DNA
  • 2 µl CutSmart Buffer
  • 1 µl of each restriction enzyme
  • 1 µl Antarctic phosphatase
  • up to 20 µl ddH2O

–> incubated 1 h at 37°C

Clean-up of digested and dephosphorylated plasmids (LS)

  • Zymo DNA clean-up kit
concentrations
pSB1A331.6 ng/µl
pIG15_00196.1 ng/µl
pIG15_00292.7 ng/µl

Gibson assembly:pIG15_001, pIG15_403 and pIG15_803 (RE)

  • pIG15_001 (with pSB1A3 backbone!!!):
Fragmentamount [µl]
pSB1A3 0.43
lacI 3.88
T7 terminator 0.6
T7 promoter (gBlock) 0.1

* pIG15_403:

Fragmentamount [µl]
pIG15_002 0.53
Dengue virus antigen (4) 4.47

* pIG15_803:

Fragmentamount [µl]
pIG15_002 0.56
Herpes simplex antigen (8) 4,44

PCR: Antigen 4 (DV) (LS)

  • fragment from first PCR had the wrong size
  • expected band length: ~1000bp
  • band lenght on gel: between 200 and 300bp

Repetition of PCR: Antigen 4 from different templates (LS)

  • this time gradient PCR: 55°C to 65°C (annealing temperature)
  • denaturation temperature: 98°C instead of 92°C to prevent secondary structures of primers
PCR: Antigen 4
template: pI15_401 template:gBlock DV1
buffer 52µl
oIG15_401f 13µl
oIG15_402r 13µl
dNTPs 5,2µl
DMSO 7,8µl
Phusion Polymerase2,6µl
template1,54µl1,5µl
dH2O164,86µl164,9µl
Cycling (25x)
98°C3min
98°C20s
55°C-72°C20s
72°C20s
4°C
  • PCR products were kept in fridge o/n

2015/05/22

Gel pic from gradient PCR for Antigen 4 (DV1)

Marked red: Bands that were cut out and used for gel-ex clea up.

Gibson: pIG14_403 again (DV1 in pIG15_002) (LS)

  • pIG15_002 (digested BamHI + AflII): 0,44µl
  • Antigen 4 (DV1): 3,47µl
  • added to Gibson Mix
  • 10µl transformed in E.coli Top 10

Transformation: Plasmids with Antigens without Tag in pJET in E.coli Top 10

  • pIG15_301
  • PIG15_401
  • pIG15_501
  • pIG15_601
  • pIG15_701
  • pIG15_801
  • pIG15_901
  • pIG15_1001
  • pIG15_1101

–>transformation according to protocol

Gibson for pIG15_001A and pIG15_803: picked 8 clones each (LS)

  • on the plate for pIG15_403 were lots of clones, but since we found out that DV1 is ~1000bp and we accidently cloned pIG15_403 with a fragment that was around 300bp long, we didn't use this plate
  • incubation in LB-media with Amp or Chloramphenicol for around 8h

Miniprep of all clones (pIG15_001A + pIG15_803) (LS)

  • concentrations:
pIG15_803[ng/µl]pIg15_001A[ng/µl]
1277,31171,8
2228,92242,4
3308,83267,8
4268,34231,8
5302,05234,0
6295,86235,1
7300,77172,9
8209,38142,6

2015/05/23

Miniprep of yesterdays trafo (pIG15_301 - pIG15_1101) (RE)

  • Zymo kit
  • eluted in 60µl
  • Nano-Drop:
plasmid[ng/µl]
pIG15_30117,4
pIG15_40140
pIG15_50134,2
pIG15_60153,5
pIG15_70145,3
pIG15_80112,1
pIG15_90121,2
pIG15_100129,8
pIG15_110152,5

Test digest: pIG15_803 + pIG15_001A with BamHI and SpeI (LS)

  • 8 clones for pIg15_803
  • 8 clones for pIG15_001A
  • digest in 20µl with BamHI HF and SpeI HF
Correct clones: pIG15_803 (6) and (7)/pIG15_001A (4) and (5)

Sequencing

  • correct clones:
    • pIG15_803-6 and pIG15_803-7
    • pIG15_001A-4 and pIG15_001A-5

Repetition of transformation from 2015/05/22 (RE)

2015/05/24

Mini-Prep: pJET with Antigen gBlocks (RE)

plasmidc [ng/µl]
pIG15_301 633
pIG15_401 638
pIG15_501 422
pIG15_601 358
pIG15_701 651
pIG15_801 979
pIG15_901 368
pIG15_1001 305
pIG15_1101 212
  • Biozym-Kit
  • eluted in 30 µl dH2O (pIG15_501 in 60 µl)

Mini-Prep: pIg15_403 (DV1 in pSB1C3 backbone with 10x His-tag) (LS)

plasmidc [ng/µl]
pIG15_403-1 140,3
pIG15_403-2 115,6
pIG15_403-3 119,2
pIG15_403-4 119,9
pIG15_403-5 138,5
pIG15_403-6 168,2
pIG15_403-7 96,5
pIG15_403-8 66,0
  • test digest with BamHI and PstI
volumeingredient
5µlplasmid
1µl BamHI
1µl PstI
1µl Cut Smart Buffer
3µl dH2O
  • digest didn't work
  • repetition: this time in 20µl
  • didn't work again

Repetition of Gibson for pIG15_403 (RE)

  • 0,53µl digested pIG15_002
  • 4,47l DV1
  • added to Gibson Mix
  • transformation in E.coli Top 10 (10µl)

Digest of backbones (LS)

  • pSB1A3, pIG15_002, pIG15_803-6 and pIG15_803-8
  • digested with EcoRI and PstI
  • 50µl
  • incubation at 37°C for 1 h
  • Dephosphorylation of pSB1A3
volumeingredient
6µl Antarctic phosphatase buffer
1µl Antarctic phosphatase
3µl dH2o
  • incubation at 37°C for 1 h
  • agarose- gel for digest/dephosphorylation

  • cut out correct bands
  • clean-up with qiagen-kit
  • concentrations:
pSB1A3 36,ng/µl
pIG15_002 4,4 ng/µl
pIG15_803-8 4,2 ng/µl

Ligation of self-build cloning site into pSBA3 (LS)

  • aim of this ligation is to get our constructs into pSB1A3, so that they can be expressed more easily
  • to distinguish between constructs in pSB1C3 and pSB1A3, those with the Amp- resistence will have an „A“ added after their name
pIG15_803-ApIG15_002-ALigation control
Insert 15µl 15µl -
Vector 2µl 2µl 2µl
T4 Ligase 1µl 1µl 1µl
T4 Ligase buffer 2µl 2µl 2µl
dH2O - - 15µl
  • incubation at RT for 1h

Transformation of Ligation in E.coli T10 (LS)

  • transformation of ligation+ ligation control in E.coli Top 10
  • used 10µl of ligation (control) mix
  • incubation of LB-Amp plates with transformed E.coli cells o/n at 37°C

2015/05/25

Gibson for pIG15_403: checking plates (LS)

  • lots of clones on the plates
  • picked 8 clones
  • incubation at 37°C in LB-Clm for ~8h (shaking)

Ligation: checking plates (LS)

  • some clones on the ligation plates
  • nothing on the ligation control plate :)
  • picked 8 clones each (pIG15_803-8-A + pIG15_002-A)
  • incubation in LB-Amp at 37°C for ~8 h (shaking)

Miniprep: all clones from Gibson plate (pIG15_403) and ligation plates (LS)

2015/05/26

Test digest: HindIII + PstI

  • 20µl digest, incubated at 37°C for 1h
  • agarose-gel: nothing but smears…
  • finally found out the reason: There was no RnaseA in buffer 1 of the biozym miniprep kit
  • miniprep will be repeated tomorrow, test digest as well

2015/05/27

Mini-Prep:

  • pIG15_403 (8x), pIG15_803-A (8x) and pIG15_002-A (8x) are prepped with the Biozym-Kit
  • according to the manufacturers protocol
  • eluted in 50 µl H2O

Nano-Drop

constructconcentration [ng/µl]comment
pIG15_403 (1) 84.8
pIG15_403 (2) 71.9
pIG15_403 (3) 86.8
pIG15_403 (4) 118.1
pIG15_403 (5) 57.5
pIG15_403 (6) 80.4 –> sequencing (2015/05/29): correct
pIG15_403 (7) 96.7
pIG15_403 (8) 101.5
pIG15_803-A (1) 79.8
pIG15_803-A (2) 84.6
pIG15_803-A (3) 59.3
pIG15_803-A (4) 70.7
pIG15_803-A (5) 98.4
pIG15_803-A (6) 80.4
pIG15_803-A (7) 83.6
pIG15_803-A (8) 90.7 –> sequencing (2015/05/29): correct
pIG15_002-A (1) 108.8
pIG15_002-A (2) 74.5
pIG15_002-A (3) 101.7 –> sequencing (2015/05/29): correct
pIG15_002-A (4) 86.4
pIG15_002-A (5) 94.1
pIG15_002-A (6) 82.4
pIG15_002-A (7) 80.9
pIG15_002-A (8) 75.8

Test digest: BamHI + PstI

  • 20µl digest (5µl Plasmid), incubated at 37°C for 1h

Transformation (RE) of pIG15_301 to pIG15_1101 in E. coli TOP10 according to the protocol

2015/05/28

Mini-Prep (RE)

  • yesterday's transformations
  • 5 ml liquid culture (LB-amp)
  • Biozym-Kit
  • eluted in 30 µl dH2O

Nano-Drop:

Plasmidconcentration [ng/µl]
pIG15_301 212.2
pIG15_401 274.3
pIG15_501 222.1
pIG15_601 194.0
pIG15_701 215.9
pIG15_801 60.0
pIG15_901 220.9
pIG15_1001 220.7
pIG15_1101 220.0

2015/05/29

Digest (RE)

PlasmidEnzyme 1Enzyme 2
pIG15_301 BamHI HindIII
pIG15_401 BamHI HindIII
pIG15_501 BamHI HindIII
pIG15_601 BamHI HindIII
pIG15_701 BamHI HindIII
pIG15_801 BamHI HindIII
pIG15_901 BamHI HindIII
pIG15_1001 BamHI HindIII
pIG15_1101 BamHI HindIII
pIG15_1701 BamHI HindIII
pIG15_1801 BamHI HindIII
pET22b+ BamHI HindIII
pIG15_001-A EcoRI PstI
pIG15_403 EcoRI PstI
  • incubation at 37°C for 1h
  • heat inactivation at 65°C for 15 min

gel electrophoresis and extraction (RE)

  • 1% agarose gel
  • 40 µl loaded
  • extraction with Qiagen-Kit
  • eluted in 30 µl dH2O
BamHI and HindIII digested antigens from pIG15_301 - pIG15_1001
* BamHI and HindIII digested antigens from pIG15_1101, pIG15_1701 and pIG15_1801; BamHI and HindIII digested pET22b+; EcoRI and PstI digested pIG15_001-A and pIG15_403























Plasmidexpected fragment size [bp]extractedconcentration [ng/µl]
pIG15_301 1066 yes 6.6
pIG15_401 1066 yes 3.0
pIG15_501 1075 yes 3.4
pIG15_601 235 no -
pIG15_701 1558 yes 20.9
pIG15_801 400 yes 4.6
pIG15_901 1237 yes 2.7
pIG15_1001 580 yes 2.0
pIG15_1101 1363 yes 4.4
pIG15_1701 547 yes 6.8
pIG15_1801 538 yes 8.4
pET22b+ 5472 yes 2.4
pIG15_001-A 1441 yes 17.6
pIG15_001-A ~2000 yes 6.1
pIG15_403 2422 no -
pIG15_403 2033 no -

Ligation (RE)

  • pET22b+ (backbone) and 400 bp fragment from pIG15_801 (insert)
ingredientamount [µl]amount [µg]
backbone 15 36
insert 7.1 32.7
T4 Ligase 1
T4 Ligase Buffer 3
dH2O 4
  • incubation at RT for 1.5 h

Transformation (RE)

  • of the ligation product into E. coli TOP10 according to the protocol

2015/05/30

Mini-Prep (RE)

  • 4 colonies from yesterday's transformation
  • 5 ml liquid culture (LB-amp)
  • Biozym-Kit
  • eluted in 30 µl dH2O

Nano-Drop:

Plasmidc [ng/µl]
pET22b+_801 (1) 575.8
pET22b+_801 (2) 247.7
pET22b+_801 (3) 309.9
pET22b+_801 (4) 260.0

Test-Digest (RE)

ingredientamount [µl]
DNA 1
BamHI 1
HindIII 1
PstI 1
CutSmart 2
dH2O 14
  • incubation at 37°C for 1 h
  • heat inactivation at 65°C for 15 min
  • analysis on 1% agarose gel:
pET22b+_801 (pET22b+ incl Herpes simplex antigen) digested with BamHI, HindIII and PstI as well as undigested; expected fragment sizes: 4100, 1300 and 400 bp

2015/05/31

Mini-Prep (JN)

  • pET22b+_801 ligation product
  • same colonies as yesterday
  • Biozym-Kit

Nano-Drop:

PlasmidConcentration [ng/µl]
pET22b+_801 - 1 142.6
pET22b+_801 - 2 38.9
pET22b+_801 - 3 66.7
pET22b+_801 - 4 106.0

Test-Digest (JN/RE)

  • ~500 µg DNA
  • BamHI, HindIII and PstI (1 µl each)
  • incubation 1h at 37°C
  • analysis on 1% agarose gel:
pET22b+_801 digested with BamHI, HindIII and PstI as well as undigested plasmids; expected fragment sizes: 4100, 1300 and 400 bp

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