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Table 3 Top 20 diverse proteins (as determined by coding nucleotide diversity) of Biomphalaria sudanica that contain at least one transmembrane domain, and thus represent putative pathogen recognition receptors. * Non-truncated BSUD.4885 protein is 405 aa in length as determined by manual alignment

From: The genome and transcriptome of the snail Biomphalaria sudanica s.l.: immune gene diversification and highly polymorphic genomic regions in an important African vector of Schistosoma mansoni

Gene (contig/scaffold, Linkage Group)

Nucleotide Diversity % (coding)

Protein length (aa)

Inferred protein-receptor function / functional domains / protein family

BSUD.20937 (80, LG1)

5.7

453

Tumor Necrosis Factor (TNF)

BSUD.4884 (2266, LG10)

5.3

86

Unknown, linked (same contig) to RADres [79]. Bacteriocin domain

BSUD.4885 (2266, LG10)

4.8

354*

Unknown, linked (same contig) to RADres [79]. Domains: TMEM154 protein family, Rifin

BSUD.3983 (208, LG16)

4.0

817

Unknown, linked (same contig) to PTC2 [42]. Domains: SHP2-interacting transmembrane adaptor protein, SIT

BSUD.4096 (208, LG16)

3.7

270

Unknown, linked (same contig) to PTC2 [42]. Domains: Viral glycoprotein L

BSUD.20268 (7608, LG6)

3.3

75

Unknown. Domains of unknown function (DUF6768)

BSUD.9255 (379, LG11)

3.3

453

Unknown Domains of unknown function (DUF4781), Death domain

BSUD.15077 (580, LG16)

3.1

318

Cell adhesion molecule. Wnt and fibroblast growth factor (FGF) inhibitory regulator and Protocadherin domain.

BSUD.4112 (208, LG16)

2.9

341

Cell adhesion molecule linked (same contig) to PTC2 [42]. Protocadherin domain.

BSUD.18104 (69, LG15)

2.8

1154

G-protein coupled receptor. 7 transmembrane receptor (rhodopsin family), Leucine-rich repeat

BSUD.3984 (208, LG16)

2.7

324

Polymorphic transmembrane cluster 2 (PTC2) gene 9 [42].

BSUD.14211 (540, LG5)

2.7

516

Cell adhesion molecule. F5/8 type C domain.

BSUD.17807 (6862, LG13)

2.7

504

Cell adhesion molecule. Ephrin type-A receptor 2 transmembrane and immunoglobulin domain.

BSUD.14415 (550, LG16)

2.6

483

Unknown. Wolframin EF-hand domain

BSUD.9838 (3979, LG4)

2.6

203

Transient receptor potential cation channel subfamily M member 2-like. Ion transport domain

BSUD.12903 (499, LG16)

2.6

647

Receptor with C-type lectin and immunoglobulin domain

BSUD.23928 (4388, LG10)

2.5

944

G-protein coupled receptor. 7 transmembrane receptor (rhodopsin family), Low-density lipoprotein receptor domain class A, Leucine-rich repeat

BSUD.8884 (359, LG6)

2.4

565

Guadeloupe Resistance Complex (GRC/PTC1) gene 2 [41, 80]. Fibronectin type III domain, TMEM154 protein family.

BSUD.4003 (208, LG16)

2.4

473

Unknown, linked (same contig) to PTC2 [42]. Prodomain subtilisin 2, TMEM154 protein family.

BSUD.4089 (208, LG16)

2.3

331

Receptor with C-type lectin domain.