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Table 2 Summary of the most highly expressed transcripts of toxins expressed in the venom duct

From: Elucidation of the molecular envenomation strategy of the cone snail Conus geographus through transcriptome sequencing of its venom duct

Pharmacological Sites Most Frequently Targeted

Rank of Site

Peptides Targeting Site

Sequence of Predicted Mature Venom Peptide

Total Reads

Distribution (% in quadrant)

     

P

PC

DC

D

NMDA Receptor (NR2B Subunit)

1

ConG

GEγγVQγNQγLIRγASNGKR

65,820

0.2

0.3

47.8

51.6

  

ConG*

GEγγLQγNQγLIRγKSNGKR

90,531

0.7

0.4

34.4

64.6

Nav 1.4 (outer pore vestibule)

2

μ-GIIIA

RDCCTPPKKCKDRQCKPQRCCAGR

1,090

46.0

41.6

12.5

0.0

  

μ-GIIIB

RDCCTPPRKCKDRRCKPMKCCAGR

110,980

41.2

43.2

15.0

0.5

Nicotinic AChR (Adult Muscle, αδ interface)

3

α-GI

ECCNPACGRHYSCGR

6, 431

50.7

40.4

8.6

0.4

  

α-GIB

ECCNPACGRHYSCKGGR

29,256

24.8

60.8

13.9

0.4

  

α-GII

ECCHPACGKHFSCGR

27,753

43.4

42.0

14.3

0.3

? Nicotinic AChR (Fetal Muscle, αγ interface)

4

αA(G4.1)

CCGKPNAACHPCVCNGSCSGRR

36,087

8.8

72.9

17.5

0.8

  

αA(G4.2)

CCGKPNAACHPCVCNGSCSGGR

4,262

4.5

79.1

15.7

0.7

  

αA(G4.3)

CCGKPTSACHPCVCNGSCSGGR

461

20.0

62.7

16.5

0.9

Neuronal nAChR (Subtype uncertain)

5

α-GID

ECCSNPACRVNNPHVCRRR

19,350

41.6

44.9

12.4

1.2

Calcium Channel (Subtype uncertain)

6

ωGVIIA ωGVIIB*

CKSPGTPCSRGMRDCCTSCLLYSNKCRRY

5,992

43.9

44.6

10.1

1.3

   

CKSPGTPCSRTMRDCCTSCLSYSKKCRG

3,859

24.0

48.9

16.9

10.2

? Ca Channel(Unknown)

7

(G20)

CVPSGGSCSRTAYSCCHGSCSGGRCG

3,767

30.2

42.3

20.7

6.7

Calcium Channel (Cav2.2 subtype, outer vestibule)

8

ωGVIA

CKSPGSSCSPTSYNCCRSCNPYTKRCYG

3,611

61.0

18.6

11.3

9.2

  1. The targets of the mature toxins, the total number of reads and their differential expression (percentage of the total) in the four segments are shown. * indicates allelic variants.