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Table 3 Inhibition of rPpAChE1 and rPpAChE1-G119S by different classes of AChE inhibitors

From: Mosquito mutations F290V and F331W expressed in acetylcholinesterase of the sand fly Phlebotomus papatasi (Scopoli): biochemical properties and inhibitor sensitivity

Compound

Inhibitor class

Wild type rPpAChE1 aIC50 (95% CI)

G119S rPpAChE1 aIC50 (95% CI)

cRR

Paraoxon

Acylation site

290

380,000

1310

Maloxon

Acylation site

44

20,000

455

Eserine

Acylation site

3.2 (2.6–4.0)

86 (73–102)

27

Propoxur

Acylation site

220 (147–329)

4227,000 (–)b

19,213

Carbofuran

Acylation site

24 (17–33)

124,000 (–)

5167

1

Acylation site

14 (10–19)

236,800 (7404–7575,000)

16,914

2

Acylation site

36 (28–48)

123,100 (–)

3419

3

Acylation site

13 (9.4–19)

235 (164–336)

18

4

Acylation site

75 (36–152)

4775 (3,048–7482)

64

5

Acylation site

76 (50–117)

2128 (1,267–3573)

28

Tacrine

Choline binding site

67 (56–81)

388 (318–473)

5.8

6

Bivalent

0.42 (0.35–0.52)

2.7 (2.3–3.2)

6.4

7

Bivalent

14 (13–15)

35 (28–42)

2.5

Donepezil

Bivalent

52 (39–70)

262 (202–341)

5

Tubocurarine

Peripheral site

143,200 (94,630–216,700)

661,800 (290,000–1511,000)

4.6

Ethidium bromide

Peripheral site

17,100 (13,890–21,060)

6433 (4380–9448)

0.4

  1. aIC50 = inhibitor concentration producing 50% inhibition of activity (in nM), where (95% CI) = 95% confidence interval
  2. b(–) denotes wide confidence limits from incomplete inhibition of rPpAChE1-G119S
  3. cResistance ratio (RR) = IC50 wild type / IC50 mutant