Team:Stockholm/24 September 2010

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Contents

Andreas

Plasmid prep

From 23/9 ON cultures

Omega E.Z.N.A. Plasmid Miniprep kit I.

New plasmid prep buffers
DNA concentration
† = unsure value due to bad blank sample.
Sample Conc [ng/μl] A260/A280
pSB1A2.RBS.yCCS 3 195.5 1.81
pSB1A2.RBS.yCCS 4 165.7 1.85
pEX.N-TAT⋅SOD⋅His 3† 60.00 1.83
pEX.N-TAT⋅SOD⋅His 4† 90.00 1.73
pSB1K3.N-TAT⋅SOD⋅His 4 130.5 1.84
pSB1K3.N-TAT⋅SOD⋅His 5† 60.00 1.88
pSB1K3.N-Tra10⋅SOD⋅His 5† 90.00 1.93
pSB1K3.N-LMWP⋅SOD⋅His 1 258.2 1.87
pSB1C3.N-LMWP⋅SOD⋅His 1 155.4 1.82
pSB1C3.N-LMWP⋅SOD⋅His 4 331.9 1.80

Cloning and assembly

Digestions

[pEX.RFP] = 44.0 ng/μl

  pA.RBS. yCCS (3) X+P pEX.N-TAT. SH (4) X+P pK.N-TAT. SH (4) S+P pK.N-Tra10. SH (5) X+P pK.N-Tra10. SH (5) S+P pC.N-LMWP. SH (4) X+P pC.N-LMWP. SH (4) S+P pEX.RFP X+P
10X FastDigest buffer 2 2 2 2 2 2 2 3
DNA (1 μg) 5 12.5 8 12.5 12.5 4 4 22
dH2O 11 3.5 7 3.5 3.5 12 12 3
FD XbaI 1 1 0 1 0 1 0 1
FD PstI 1 1 1 1 1 1 1 1
FD SpeI 0 0 1 0 1 0 1 0
  20 μl 20 μl 20 μl 20 μl 20 μl 20 μl 20 μl 30 μl
  • Incubation: 37 °C, 1 h

Gel verification

Gel verification of sample digestions.
4 μl λ; 3 μl sample.
1 kb λ = O'GeneRuler 1 kb DNA ladder. 50 bp λ = GeneRuler 50 bp DNA ladder.

Due to the risk of pSB1A2.RBS.yCCS and pEX.N-TAT⋅SOD⋅His having previously been mixed up, a gel was run on the digested samples (after 15 min incubation) to verify the excised insert size. Remaining samples were also run on the gel to verify digestion.

1 % agarose, 120 V

Expected bands

  1. pSB1A2.RBS.yCCS X+P: 806 bp, 2061 bp
  2. pEX.N-TAT⋅SOD⋅His X+P: 558 bp, 4453 bp
  3. pSB1K3.N-TAT⋅SOD⋅His S+P: ≈2730 bp
  4. pSB1K3.N-Tra10⋅SOD⋅His X+P: 588 bp, 2188 bp
  5. pSB1K3.N-Tra10⋅SOD⋅His S+P: ≈2760 bp
  6. pSB1C3.N-LMWP⋅SOD⋅His X+P: 567 bp, 2054 bp
  7. pSB1C3.N-LMWP⋅SOD⋅His S+P: ≈2610 bp
  8. pEX.RFP X+P: 1095 bp, 4453 bp

Results
Seemingly correct bands for samples 1, 3, 4, 5 and 8. More unsure results for 6 and 7, while 2 seems to contain more than one insert, or has been digested at several places.





The Faculty of Science at Stockholm University Swedish Vitiligo association (Svenska Vitiligoförbundet) Geneious Fermentas/ Sigma-Aldrich/

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