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Table 3 Melting temperature and calibration parameters for multiplex HRM-qPCR detection of K99, F41, F18, F6 and K88 fimbriae gene

From: Identification and quantification of virulence factors of enterotoxigenic Escherichia coli by high-resolution melting curve quantitative PCR

 

K99

F41

F18

F6

K88

Tm(°C)

74.7 ± 0.06

76.5 ± 0.12

77.6 ± 0.35

79.5 ± 0.78

80.5 ± 0.15

E a

1.87

1.74

1.7

1.85

1.84

r1 2 b

0.99

0.99

0.99

0.99

0.99

DNA range

1–20%

0.2%–16.7%

1%–100%

0.3%–4.8%

4.8%–60%

4.8%–20%

Slope c

2.96

2.74

2.39

0.48

1.44

1.49

r2 2 d

0.97

0.97

0.98

0.97

0.99

0.97

  1. aprimer efficiency determined by individual PCR
  2. br1 2, correlation coefficient for standard curve determined by individual qPCR
  3. cSlope for calibration curve correlating the area of the melting peaks area to the proportion of the template DNA
  4. dr2 2, correlation coefficient for standard curve correlating the area of the melting peaks to the proportion of the template DNA