Fig. 7: LC-MS/MS identification of jellyfish toxin proteins in cassiosomes. | Communications Biology

Fig. 7: LC-MS/MS identification of jellyfish toxin proteins in cassiosomes.

From: Cassiosomes are stinging-cell structures in the mucus of the upside-down jellyfish Cassiopea xamachana

Fig. 7

a Alignment of peptides (black boxes) identified in two sample types (C = cassiosomes; VA = vesicular appendages) by shotgun proteomics to the full-length toxin homologs (CassTX-A, -B and -C; black bars) of the cnidarian-restricted CrTX/CaTX toxin family identified in C. xamachana. Each protein was identified with a confidence score > 0.05 and with at least two unique peptides in each sample, except for CassTX-C in the cassiosome sample. b–e Representative mass and annotated tandem mass spectra of CassTX-A tryptic peptides: (b) and (c) peptide sequence VAPIPESGLEEGK; (d) and (e) peptide sequence TEIELSTDLLGDVK.

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