- ELSEVIER SCI LTD
Pufflectin found in Takifugu rubripes (Tr pufflectin) is the first animal lectin reported to show sequence similarity to monocotyledonous plant lectins. In the present study, we identified and characterized an orthologous lectin from Takifugu niphobles (Tn pufflectin), a species closely related to T. rubripes. Tn pufflectin exhibits 86% identity to Tr pufflectin with two conserved mannose-binding domains. Tn pufflectin was mainly expressed in the skin, gills, brain, and muscles; however, it was expressed at a lower level in the other examined tissues. Recombinant Tn pufflectin, expressed by Escherichia coli, exhibited binding activity specific for D-mannose. The expression of pufflectin in the gills was much lower in T niphobles than in T rubripes; notably, the former and latter are resistant and susceptible, respectively, to the monogenean parasite Heterobothrium okamotoi, which parasitizes gills. This suggests that pufflectin might be utilized by the parasite for host recognition. (C) 2016 Elsevier Ltd. All rights reserved.
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