Team:TU Darmstadt/Labjournal/Transport

Week 1 (21.-25.05.12)

• First colony PCR of Comamonas testosteroni for isolation of the following genes: [http://partsregistry.org/wiki/index.php?title=Part:BBa_K808004 tctA 505aa] (1), [http://partsregistry.org/wiki/index.php?title=Part:BBa_K808005 tctB 197aa] (2), [http://partsregistry.org/wiki/index.php?title=Part:BBa_K808002 tctA_503aa] (3), [http://partsregistry.org/wiki/index.php?title=Part:BBa_K808003 tctB 162aa] (4), [http://partsregistry.org/wiki/index.php?title=Part:BBa_K808001 tphC 322aa] (5). Analysis of [http://en.wikipedia.org/wiki/Polymerase_chain_reaction PCR] products by agarose gel electrohporesis

• PCR product purification using the Promega-Kit
• Nanodrop measurements of the purified PCR products:

(1) : 19.5 ng/µl 260/280=1.58

(2) : 61.9 ng/µl 260/280=1.75

(3) : 75.1 ng/µl 260/280=1.75

(4) : 93.3 ng/µl 260/280=1.85

(5) : 91.3 ng/µl 260/280=1.58

• Restriction digest of PCR products by SpeI and EcoRI, heat inactivation after digestion
• Analysis of restriction digest by agarose gel electrohporesis

• Purification of the bands gained form gel electrophoresis (Promega-Kit)
• Nanodrop measurements of the purified products:

(1) : 8.3 ng/µl 260/280=1.94

(2) : 8.9 ng/µl 260/280=1.80

(3) : 13.0 ng/µl 260/280=1.57

(4) : 1.5 ng/µl 260/280=3.08

(5) : 3.7 ng/µl 260/280=2.26

week 2 (28.05.-01.06.12)

• Purified products from 1. week were ligated into pSB1A2 and subsequently transformed into DH5α (in spite of low concentration)
• Overnight incubation on LB agar plates; no growth detectable
• Second approach to isolate the five genes from Comamonas t. using colony-PCR
• Analysis of PCR products by agarose gel electrohporesis; without results; modification of the PCR protocols: adding DMSO
• Third approach to isolate the five genes from Comamonas t. by colony-PCR
• PCR product purification using the Promega-Kit: ([http://partsregistry.org/wiki/index.php?title=Part:BBa_K808005 tctB 197aa] (2), [http://partsregistry.org/wiki/index.php?title=Part:BBa_K808002 tctA_503aa] (3), [http://partsregistry.org/wiki/index.php?title=Part:BBa_K808003 tctB 162aa] (4), [http://partsregistry.org/wiki/index.php?title=Part:BBa_K808001 tphC 322aa] (5))

(1): no PCR-product

• Nanodrop measurements of the purified PCR products:

(2) : 56.1 ng/µl 260/280=1.87

(3) : 66.8 ng/µl 260/280=1.92

(4) : 72.8 ng/µl 260/280=1.87

(5) : 68.8 ng/µl 260/280=1.82

week 3 (04.-08.06.12)

• Restriction digest of the purified PCR products and of [http://partsregistry.org/wiki/index.php?title=Part:BBa_K808004 tctA 505aa] (leftover of the 1. week) by SpeI and EcoRI
• Restriction digest of pSB1A2 using SpeI and EcoRI
• Dephosphorylation of the restriction reactions by using antarctic Phosphatase
• Ligation of the five genes into pSB1A2 and subsequently transformation into DH5α (incubation at 37°C)
• colony-PCR of [http://partsregistry.org/wiki/index.php?title=Part:BBa_K808004 tctA 505aa] (1), 2 approaches
• Analysis of PCR products by agarose gel electrohporesis. Only one of them showed the expected band. The band was excluded and purified via the Promega-Kit.

• Nanodrop measurement of the purified product:

(1.1) =8.9 ng/µl 260/280=2,22

Because of low concentration and contamination the PCR was repeated and the product was purified again by the Promega-Kit.

• Performing a colony-PCR-screen of the transformed cells using the Taq-Polymerase. Verification of 4 colonies per plate.

PCR did not work

• Testing the Taq-Polymerase for function. The Phu-Polymerase was used for comparison. Only the approach using the Phu-Polymerase showed the expected bands in agarose gel electrohporesis.

• Screening was repeated with Phu-Polymerase; no bands visible

week 4 (11.-15-06.12)

• Inoculation of LB-media with DH5α_pSB1A2 and DH5α_pSB1C3; overnight incubation at 37°C
• Miniprep of DH5α_pSB1A2 and DH5α_pSB1C3 using the Promega-Kit
• Nanodrop measurements of the preparation:

pSB1A2 : 136.1 ng/µl 260/280= 1.93

pSB1C3 : 265.1 ng/µl 260/280= 1.89

• Restriction digest of pSB1A2 and pSB1C3 with EcoRI and SpeI. Afterwards dephosphorylation by using Antarctic phosphatase.
• Analysis of the restriction products through agarose gel electrohporesis; for comparison the uncropped vectors were also analyzed.

pSB1C3 shows several bands (Insert, vector without insert, linearized vector with insert); concentration of pSB1A2 is very low, only one band visible

• Approach to isolate the following genes from Comamonas t. by colony-PCR: [http://partsregistry.org/wiki/index.php?title=Part:BBa_K808004 tctA 505aa] (1), [http://partsregistry.org/wiki/index.php?title=Part:BBa_K808005 tctB 197aa] (2), [http://partsregistry.org/wiki/index.php?title=Part:BBa_K808002 tctA_503aa] (3), [http://partsregistry.org/wiki/index.php?title=Part:BBa_K808003 tctB 162aa] (4) and [http://partsregistry.org/wiki/index.php?title=Part:BBa_K808001 tphC 322aa] (5) by [http://en.wikipedia.org/wiki/Polymerase_chain_reaction PCR]
• Analysis of PCR products by agarose gel electrohporesis

Isolation of (1) and (5) did not work

• PCR product purification by using the Promega-Kit
• Nanodrop measurements of the purified PCR products:

(2) : 18.3 ng/µl 260/280=2.03

(3) : 21.2 ng/µl 260/280=1.95

(4) : 23.9 ng/µl 260/280=2.05

• Restriction digest of purified PCR products (2), (3) and (4) using SpeI and EcoRI
• Ligation of the digested genes ((2), (3), (4)) into pSB1A2 and pSB1C3
• Transformation of DH5α with pSB1A2_197, pSB1A2_503, pSB1A2_162, pSB1C3_197, pSB1C3_503, pSB1C3_162 (6 different transformation approaches). Overnight incubation at 37°C
• Screening of the transformants by colony-PCR. Verification of 6 colonies for every transformation. Afterwards the PCR products were analyzed by agarose gel electrohporesis

positive colonies are marked

• Colony-PCR of Comamonas t. to isolate [http://partsregistry.org/wiki/index.php?title=Part:BBa_K808004 tctA 505aa] (1) und [http://partsregistry.org/wiki/index.php?title=Part:BBa_K808001 tphC 322aa] (5)
• Analysis of PCR products (Colony-PCR) and the ligation approach by agarose gel electrohporesis

PCR of [http://partsregistry.org/wiki/index.php?title=Part:BBa_K808004 tctA 505aa] shows only the band of the undesired smaller product

• Restriction digest of [http://partsregistry.org/wiki/index.php?title=Part:BBa_K808001 tphC 322aa] (5) and subsequent Ligation into pSB1A2 and pSB1C3
• Transformation of DH5α with pSB1A2_322 und pSB1C3_322. [http://en.wikipedia.org/wiki/Polymerase_chain_reaction PCR] used to check for successful transformation
• Isolation of Comamonas t. genome, because it seems impossible to amplificate [http://partsregistry.org/wiki/index.php?title=Part:BBa_K808004 tctA 505aa] (1) from a fluid Comamonas t. culture.

week 5 (18.-22.06.12)

• Introduction of a nomenclature: A/C gene/colony: pSB1A2 = A; pSB1C3 = C; gene: tctA 505aa = 1, tctB 197aa = 2, tctA 503aa = 3, tctB 162aa = 4, tphC 322aa = 5; colony = 1...X
• Producing fluid cultures of the positive transformants
• Miniprep of the fluid culures by using the Frementas-Kit. Afterwards Nanodrop measurements of the preparations

A2.3 : 125.9 ng/µl 260/280= 1.62

A3.1 : 103.3 ng/µl 260/280= 1.72

A4.6 : 147.2 ng/µl 260/280= 1.70

A4.5 : 108.7 ng/µl 260/280= 1.86

A5.12 : 88.0 ng/µl 260/280= 1.87

A5.8 : 85.01 ng/µl 260/280= 1.78

A3.2 : 87.3 ng/µl 260/280= 1.81

C4.6 : 70.5 ng/µl 260/280= 1.81

C4.1 : 41.2 ng/µl 260/280= 1.85

C4.4 : 104.2 ng/µl 260/280= 1.85

C2.1 : 132.2 ng/µl 260/280= 1.85

C2.6 : 188.1 ng/µl 260/280= 1.75

• [http://en.wikipedia.org/wiki/Polymerase_chain_reaction PCR] using a rest of purified [http://partsregistry.org/wiki/index.php?title=Part:BBa_K808004 tctA 505aa] (1), subsequent agarose gel electrohporesis
• Another colony-PCR using the transformants (2)-(5) as template; analyzing the PCR product by agarose gel electrohporesis

3 positive transformants were picked for inoculation of fluid media (A34, A43; C513)

• Miniprep (Fermentas Kit) of the fluid culures and Nanodrop measurements:

A2.4 : 202,1 ng/µl 260/280= 1,63

A2.5 : 126,5 ng/µl 260/280= 1,90

A2.6 : 107,5 ng/µl 260/280= 1,81

A4.2 : 133,8 ng/µl 260/280= 1,59

C2.3 : 187,8 ng/µl 260/280= 1,87

C2.4 : 270,7 ng/µl 260/280= 1,80

C4.1 : 103,8 ng/µl 260/280= 1,80

• The Miniprep products were Restriction digested by restriction enzymes, each was cut once with EcoRI and twice with EcoRI/SpeI. Analisys of the digested products by [agarose gel electrohporesis

week 6 (25.-29.06.12)

• Further colony-PCRof Comamonas t. (3 approaches) and [http://en.wikipedia.org/wiki/Polymerase_chain_reaction PCR] with genomic Comamonas t. DNA as template to obtain [http://partsregistry.org/wiki/index.php?title=Part:BBa_K808004 tctA 505aa] (1), 2 approaches each. Subsequent analisys of the PCR products by agarose gel electrohporesis. All PCR of [http://partsregistry.org/wiki/index.php?title=Part:BBa_K808004 tctA 505aa] show only the band of the undesired smaller product.
• Ligation off the digested genes into pSB1A2 and transformation into DH5α. Overnight incubation at 37°C
• Colony-PCR of Comamonas t. and [http://en.wikipedia.org/wiki/Polymerase_chain_reaction PCR] with genomic Comamonas t. DNA as template to obtain [http://partsregistry.org/wiki/index.php?title=Part:BBa_K808004 tctA 505aa] (1). [http://partsregistry.org/wiki/index.php?title=Part:BBa_K808005 tctB 197aa] (2), [http://partsregistry.org/wiki/index.php?title=Part:BBa_K808002 tctA_503aa] (3), [http://partsregistry.org/wiki/index.php?title=Part:BBa_K808003 tctB 162aa] (4), [http://partsregistry.org/wiki/index.php?title=Part:BBa_K808001 tphC 322aa] (5) used as control

• Miniprep and Nanodrop measurement of:

A3.1 : 111.6 ng/µl 260/280= 1.72

A3.4 : 79.5 ng/µl 260/280= 1.66

C4.6 : 69.6 ng/µl 260/280= 1.76

A4.2 : 96.9 ng/µl 260/280= 1.62

A2.4 : 109.7 ng/µl 260/280= 1.72

A2.5 : 160.8 ng/µl 260/280= 1.79

A5.13 : 188.7 ng/µl 260/280= 1.85

A5.12 : 114.5 ng/µl 260/280= 1.81

• Checking the Miniprep with [http://en.wikipedia.org/wiki/Polymerase_chain_reaction PCR] and agarose gel electrohporesis

• Colony-PCR-Screen of the transformants and analisys of the PCR products by agarose gel electrohporesis

No bands visible

• Ligation of [http://partsregistry.org/wiki/index.php?title=Part:BBa_K808004 tctA 505aa] into pSB1C3 and subsequently transformation into DH5α. No colonies
• The following vectors were sequenced: pSB1A2_197.4, pSB1A2_197.5, psSB1A2_503.1, pSB1A2_503.4, pSB1A2_162.2, pSB1C3_162.6, pSB1A2_322.12, pSB1A2_322.13
• Restriction digest of [http://partsregistry.org/wiki/index.php?title=Part:BBa_K808004 tctA 505aa] using EcoRI/SpeI. Ligation into pSB1C3 and subsequently transformation into DH5α.
• Preperations for pure culture: colony-PCR of A2.4, A2.5, A3.1, A3.4, A4.2, C4.6, A5.12, A5.13 (2 colonies each) and afterwards checking the PCR products by agarose gel electrohporesis. Positive colonies were picked, streaked onto fresh media and incubated again.
• As A5.12 and A5.13 are missing the right insert the colony-PCR was repeated (5 and 6 colonies were used). To provide additional monitoring the colony-PCR was repeated for A2.5_2, A3.1_2 und A4.2_2. 2 positive colonies were again streaked onto fresh media.
• The Arabinose-Promotor ([http://partsregistry.org/wiki/index.php?title=Part:BBa_K808000 Ara]) was isolated from pbad_turbo_gfp and colonies containing this plasmid (3 approaches each). Approach T2 is further in use.

week 7 (02.-06.07.12)

• Restriction digest of [http://partsregistry.org/wiki/index.php?title=Part:BBa_K808000 Ara] and pXylE using EcoRI and SpeI. Ligation of the restricted products and transformation into DH5α. No colonies

• Restriction digest of pSB1A2 using EcoRI and SpeI
• DH5α-cells containing the vectors A4.2_2, A3.1_2, A2.5_2, A5.13_5 were diluted in glycerol (20%) and freezed (-80°C).
• Mutagenic PCR of A4.2, A5.13, A3.1 to eliminate the PstI restriction site
• Checking the DH5α-cells for correct transformation with the vectors after the mutagenic PCR (checking 7 colonies each). The gel was alternately loaded with digested and uncut PCR products.

• The transformation of DH5α with pSB1C3_tctA_505aa was verified by colony-PCR. The positive colonies were used for Miniprep
• Miniprep (Fermentas Kit) and Nanodrop measurement:

A5.13m_1 : 105.2 ng/µl 260/280= 1.84

A5.13m_2 : 223.0 ng/µl 260/280= 1.87

A5.13m_3 : 110.6 ng/µl 260/280= 1.87

A5.13m_4 : 99.6 ng/µl 260/280= 1.90

A5.13m_6 : 326.6 ng/µl 260/280= 1.88

A5.13m_7 : 145.0 ng/µl 260/280= 1.84

A3.1m_1 : 241.7 ng/µl 260/280= 1.87

A3.1m_2 : 188.4 ng/µl 260/280= 1.89

A3.1m_3 : 112.4 ng/µl 260/280= 1.89

A3.1m_4 : 173.1 ng/µl 260/280= 1.85

A3.1m_5 : 111.6 ng/µl 260/280= 1.85

A3.1m_6 : 138.1 ng/µl 260/280= 1.87

A3.1m_7 : 178.9 ng/µl 260/280= 1.86

A4.2m_1 : 57.0 ng/µl 260/280= 1.84

A4.2m_2 : 46.5 ng/µl 260/280= 1.77

A4.2m_3 : 55.7 ng/µl 260/280= 1.88

A4.2m_4 : 111.3 ng/µl 260/280= 1.82

A4.2m_5 : 236.9 ng/µl 260/280= 1.89

A4.2m_6 : 69.3 ng/µl 260/280= 1.89

A4.2m_7 : 72.3 ng/µl 260/280= 1.85

C1.2 : 132.9 ng/µl 260/280= 1.72

• new transformation of DH5α with pXylE_Ara

week 8 (09.-13.07.12)

• Checking the transformation of DH5α with pSB1C3_tctA_505aa again (colony-PCR) [*]. The colonies Nr. 2, 8 and 10 were picked and streaked onto fresh media.
• colony-PCR of DH5α_pXylE_Ara [*]

No positive colonies

• Sequencing the following vectors: pSB1A2_4.2m_5, pSB1A2_4.2m_4, pSB1A2_5.13m_3, pSB1A2_5.13m_2, pSB1A2_3.1m_1, pSB1A2_3.1m_5, pSB1A2_3.1m_7
• Checking the transformation of DH5α with A1 (5 colonies) and C1 (7 colonies) by using Colony-PCR [?]
• Checking the transformation of DH5α with pSB1C3_tctA_505aa again by colony-PCR. Only the colonies Nr. 2, 8 and 10 (see above) were checked (2 colonies each).

• Another colony-PCR of DH5α_pXy19_Ara
• Miniprep (Fermentas Kit) and Nanodrop measurement of:

A5.13m_2 : 191.2 ng/µl 260/280= 1.84

A5.13m_3 : 168.1 ng/µl 260/280= 1.78

A2.5 : 193.0 ng/µl 260/280= 1.83

A3.1m_5 : 146.1 ng/µl 260/280= 1.82

A3.1m_1 : 250.1 ng/µl 260/280= 1.84

A4.2m_4 : 124.8 ng/µl 260/280= 1.85

• Restriction digest of A5.13m_2, A5.13m_3, A3.1m_1, A3.1m_5, A2.5, A4.2m_4 with EcoRI and SpeI. The restriction was done to enable the ligation of the mutated genes into pSB1C3. Afterwards DH5α was transformed with the ligation product.
• Miniprep (Fermentas Kit) and Nanodrop measurement of:

C505_2_2 : 253.6 ng/µl 260/280= 1.60

C505_2_3 : 274.7 ng/µl 260/280= 1.88

C505_8_2 : 462.1 ng/µl 260/280= 1.38

C505_8_3 : 149.1 ng/µl 260/280= 1.84

C505_10_3 : 160.4 ng/µl 260/280= 1.98

• Restriction digest of the Miniprep products with EcoRI and EcoRI/SpeI. Afterwards the restriction products were analyzed by agarose gel electrohporesis. Gel loading: uncut, cut once, cut twice

C505_2_3 und C505_8_2 were selected for mutagenic PCR.

• Restriction digest of pSB1C3 with EcoRI and SpeI
• Restriction digest of pXylE with EcoRI and XbaI and of [http://partsregistry.org/wiki/index.php?title=Part:BBa_K808000 Ara] with EcoRI and SpeI. Dephosphorylation of pXylE. Ligation of pXylE and [http://partsregistry.org/wiki/index.php?title=Part:BBa_K808000 Ara]

week 9 (16.-20.07.12)

• mutagenic PCR of C505_2_3 and C505_8_2. (Did not work)
• [http://en.wikipedia.org/wiki/Polymerase_chain_reaction PCR] of [http://partsregistry.org/wiki/index.php?title=Part:BBa_K808003 tct_B162m] and [http://partsregistry.org/wiki/index.php?title=Part:BBa_K808005 tct_B197m] with primer to add a RBS in front and behind the gene
• Restriction digest of the PCR products with EcoRI and SpeI for ligation into pSB1C3_5.13m (tphC)
• Adding a RBS to one site of [http://partsregistry.org/wiki/index.php?title=Part:BBa_K808000 Ara] using PCR with the reverse primer
• Miniprep (Fermentas Kit) and Nanodrop measurement of:

C3.1m_1 : 278.9 ng/µl 260/280= 1.88

C4.2m_4 : 214.2 ng/µl 260/280= 1.86

5.13m_3 : 256.3 ng/µl 260/280= 1.88

C2.5_2 : 44.8 ng/µl 260/280= 2.00

C5.13m_2 : 60.8 ng/µl 260/280= 1.89

week 10 (23.-27.07.12)

• Restriction digest of pSB1C3_5.13m_3_2 and pSB1C3_5.13m_3_3 with EcoRI and XbaI. Afterwards the products are ligated with RBS_tctB162m_RBS and RBS_tctB197_RBS each.
• Restriction digest of A3.1m_1 for ligation with Ara
• Digestion of pXylE for ligation with Ara_RBS
• [http://en.wikipedia.org/wiki/Polymerase_chain_reaction PCR] of Ara_RBS and [http://partsregistry.org/wiki/index.php?title=Part:BBa_K808000 Ara] for ligation into pXylE and pSB1C3. Afterwards restriction digest with restriction enzymes: Ara_RBS is cut with with EcoRI and SpeI and Ara is cut with EcoRI and XbaI
• Ligation of the restricted PCR-products to: pSB1A2_tctB197_tphCm, pSB1C3_tctB162m_tphCm, pSB1C3_tct197_tphCm, pSB1A2_tctB162m_tphCm, pSB1A2_Ara_tctA503m, pSB1C3_Ara_tctA503m, pSB1A2_Ara_XylE and transformation into DH5α
• mutagenic PCR of 505_8_2

week 11 (30.07.-03.08.12)

• Checking transformation of DH5α by colony-PCR: pSB1A2_tctB197_tphCm, pSB1C3_tctB162m_tphCm, pSB1C3_tct197_tphCm, pSB1A2_tctB162m_tphCm, pSB1A2_Ara_tctA503m, pSB1C3_Ara_tctA503m, pSB1A2_Ara_XylE. Positive colonies are picked and used for inoculation of fluid media.
• Miniprep (Fermentas Kit) of fluid culture and Nanodrop measurement of:

pSB1C3_503 : 110.0 ng/µl 260/280= 1.82

pSB1A2_tctB197_tphCm : 32.0 ng/µl 260/280= 2.10

pSB1A2_Ara_tctA503m : 202.0 ng/µl 260/280= 1.78

pSB1A2_tctB162m_tphCm : 36.5 ng/µl 260/280= 1.91

pSB1C3_Ara_tctA503m : 133.2 ng/µl 260/280= 1.83

pSB1C3_tctB162m_tphCm : 35.2 ng/µl 260/280= 1.93

pSB1C3_tct197_tphC : 30.6 ng/µl 260/280= 1.88

• Restriction digest of pSB1A2_Ara_tctA503m, pSB1C3_Ara_tctA503m, pSB1A2_tctB162m_tphCm and pSB1C3_tctB162m_tphCm and building the final constructs by ligation: pSB1A2_tctA503m_tctB162m_tphCm und pSB1C3_tctA503m_tctB162m_tphCm. Transformation of the final constructs into DH5α.
• Transformation of pSB1C3_503 into DH5α
• Checking the mutagenic PCR product of 505_8_2 and the transformation of DH5α with pSB1C3_503 by [http://en.wikipedia.org/wiki/Polymerase_chain_reaction PCR]
• Restriction digest of [http://partsregistry.org/wiki/index.php?title=Part:BBa_K808000 Ara] und C4.2_4_1 using EcoRI and PstI, building pSB1C3_Ara by ligation and transformation of the vector into DH5α
• Miniprep (Fermentas Kit) and Nanodrop measurement of:

pSB1C3_Ara : 86.7 ng/µl 260/280= 1.83

pSB1C3_505m : 113.8 ng/µl 260/280= 1.85

• Restriction digest of pSB1C3_505m with PstI. Checking if the restriction site has been successfully removed

restriction site hasn't been removed

• Screnning for transformation of DH5α with pSB1A2_tctA503m_tctB162m_tphCm and pSB1C3_tctA503m_tctB162m_tphCm using colony-PCR [*]
• Checking the constructs pSB1A2/pSB1C3_Ara_503m and pSB1A2/pSB1C3_tctB162m_tphCm by [http://en.wikipedia.org/wiki/Polymerase_chain_reaction PCR] [*]
• Ligation of [http://partsregistry.org/wiki/index.php?title=Part:BBa_K808000 Ara] into pSB1C3
• Checking if pSB1A2_tctB162m_tphCm and pSB1C3_tctB162m_tphCm have the right Prefix/Suffix by digesting both with EcoRI and XbaI and with EcoRI and PstI [*]
• Ligation of pSB1A2_tctB162m_tphCm and pSB1C3_tctB162m_tphCm with Ara_503
• Miniprep (Fermentas Kit) and Nanodrop measurement of:

pSB1A2_tctB162m_tphCm_1 : 45.3 ng/µl 260/280= 1.90

pSB1A2_tctB162m_tphCm_2 : 74.5 ng/µl 260/280= 1.82

pSB1C3_tctB162m_tphCm_1 : 95.8 ng/µl 260/280= 1.86

pSB1C3_tctB162m_tphCm_2 : 85.7 ng/µl 260/280= 1.81

pSB1C3_tctB162m_tphCm_3 : 100.1 ng/µl 260/280= 1.84

pSB1C3_tctB162m_tphCm_4 : 79.9 ng/µl 260/280= 1.88

pSB1C3_tctB162m_tphCm_5 : 89.8 ng/µl 260/280= 1.85

• Sequencing pSB1A2_tctB162m_tphCm_2 and pSB1C3_tctB162m_tphCm_5

week 12 (06.-10.08.12)

• Miniprep (Fermentas Kit) and Nanodrop measurement of:

pSB1A2_tctB162m_tphCm_2 : 55.7 ng/µl 260/280= 1.81

pSB1C3_tctB162m_tphCm_5 : 101.2 ng/µl 260/280= 1.92

• Mutagenic PCR of pSB1C3_505_8_2 and subsequent transformation into DH5α
• Ligation of Ara_503m with pSB1A2_tctB162m_tphCm/pSB1C3_tctB162m_tphCm and subsequent transformation into DH5α. Screening the transformants using colony-PCR

only colony 1, 2 and 3 have the right insert

• Miniprep (Fermentas Kit) and Nanodrop measurement of:

pSB1A2_Ara_tctA503m : 278.0 ng/µl 260/280= 1.86

pSB1C3_Ara_tctA503m : 169.0 ng/µl 260/280= 1.87

pSB1C3_Ara_1 : 59.0 ng/µl 260/280= 1.90

pSB1C3_Ara_4 : 55.5 ng/µl 260/280= 1.80

pSB1C3_Ara_tctA503m_tctB162m_tphCm : 188.8 ng/µl 260/280= 1.86

pSB1C3_Ara_tctA503m_tctB162m_tphCm :168.8 ng/µl 260/280= 1.84

pSB1C3_Ara_tctA503m_tctB162m_tphCm :271.3 ng/µl 260/280= 1.85

pSB1C3_Ara_XylE : 149.8 ng/µl 260/280= 1.86

pSB1C3_tctB197_tphC : 95.8 ng/µl 260/280= 1.84

pSB1A2_tctB197_tphC : 69.0 ng/µl 260/280= 1.88

• Sequencing of 3 different pSB1C3_Ara_tctA503m_tctB162m_tphC
• Analysis of mutagenic PCR products of 505_8_2 and restriction digest with PstI [*]
• Restriction digest of Ara_RBS with EcoRI and SpeI and of pSB1C3_505m with EcoRI and XbaI. Building pSB1C3_Ara_505m by ligation and subsequent transformation into DH5α.

week 13 (13.-17.08.12)

• Restriction digest of pSB1C3_197_tphCm with EcoRI and XbaI
• Checking the transformation of DH5α with pSB1C3_Ara_505m by using colony-PCR

• Sequencing pSB1C3_Ara_XylE, pSB1C3_Ara_tctA503m_tctB162m_tphCm (=Operon1), pSB1C3_505m
• Restriction digest of Ara_RBS with EcoRI and SpeI and of pSB1C3_tphCm with EcoRI and XbaI. Building pSB1C3_Ara_tphCm by ligation and subsequent transformation into DH5α
• Restriction digest of pSB1C3_Ara_tctA505m with EcoRI and SpeI. Ligation of Ara_tctA505m and tctB197_tphCm into pSB1C3

week 14 (20.-24.08.12)

• Checking the transformation of DH5α with pSB1C3_Ara_tphCm using colony-PCR [*]

week 15 (27.-31.08.12)

• Restriction digest of pSB1C3_Ara_tphCm and pSB1C3_Ara_tctA505m with PstI and SpeI
• Restriction digest of pSB1C3_197_tphCm with XbaI and PstI.
• Building the construct pSB1C3_Ara_tctA505m_197_tphCm (= Operon2) by ligation. Subsequent transformation into DH5α
• Checking the transformation of DH5α with Operon2 using colony-PCR [*]