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Table 2 Evaluation of sequencing results of three DNA hairpin constructs. Average ratio of peak height after to before the hairpin region was determined as a measure of how well the sequence read through the hairpin structure. The greater the peak height ratio, the greater the ability to sequence through the hairpin. A value of 1 indicates no loss in peak height, and a value of zero indicates a complete stop in sequence after the hairpin region. All values are the averages of at least triplicate sequencing reactions.

From: Criteria for effective design, construction, and gene knockdown by shRNA vectors

  

DNA Plasmid

  

pHSPG-shTLR4

pHSPG-shmutTLR4

pHSPG-shmCNN3

Chemistry

DNA relaxing agent

Peak Height Ratio

Peak Height Ratio

Peak Height Ratio

BDv1.1

None

0.0

0.4

0.0

BDv1.1

5% DMSO

0.0

0.6

0.2

BDv1.1

0.83 M Betaine

0.3

0.9

0.7

BDv1.1

1 × PCRx Enhancer

0.1

0.7

0.3

BDv1.1

0.83 M Betaine & 1 × PCRx Enhancer

0.6

0.9

0.5

20:1 BD:dGTP

None

0.4

0.6

0.5

20:1 BD:dGTP

5% DMSO

0.6

0.7

0.6

20:1 BD:dGTP

0.83 M Betaine

0.7

1.0

0.8

20:1 BD:dGTP

1 × PCRx Enhancer

0.6

0.8

0.7

20:1 BD:dGTP

0.83 M Betaine & 1 × PCRx Enhancer

0.8

0.9

0.8

10:1 BD:dGTP

None

0.5

0.6

0.6

10:1 BD:dGTP

5% DMSO

0.7

0.8

0.7

10:1 BD:dGTP

0.83 M Betaine

0.8

0.9

0.9

10:1 BD:dGTP

1 × PCRx Enhancer

0.7

0.8

0.8

10:1 BD:dGTP

0.83 M Betaine & 1 × PCRx Enhancer

0.9

1.0

0.9

10:1 BD:dGTP

1 × ThermoFidelase I

0.1

0.2

0.2

5:1 BD:dGTP

None

0.6

0.7

0.7

3:1 BD:dGTP

None

0.6

0.6

0.6

dGTP only

None

0.7

0.7

0.8