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Fig. 1 | BMC Evolutionary Biology

Fig. 1

From: Comparative analyses of glycerotoxin expression unveil a novel structural organization of the bloodworm venom system

Fig. 1

Molecular characterization of the glycerotoxin gene analyzed in the bloodworm species G. tridactyla (Glyceridae, Annelida). a Domains identified in three translated GLTx full-length transcripts (SR23, contig 5772, contig 4317, and contig 4318). A calcium-binding EGF domain and two WSC domains were recovered by Pfam-searches, and a CCP domain through SMART. The full-length transcripts each harbor a signal peptide, but no known protein domains are present at the C-terminal end of the GLTx gene. b Maximum likelihood analysis performed on a dataset comprising a 746 bp gene fragment of 52 GLTx clones and three GLTx full-length transcripts (SR23, contig 5772, contig 4317, and contig 4318) revealed at least three paralogs, namely GLTx paralog 1, GLTx paralog 2, and GLTx paralog 3. The ML phylogeny obtained with RAxML v.8.2.8 represents the best tree under a GTR + GAMMA + I substitution model. Bootstrap support values (>60%) from 1,000 pseudoreplicates are given at the nodes. Scale bars indicate the number of substitutions per site

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