Xem 1-4 trên 4 kết quả Suberites domuncula
  • Based on the light-reactive behavior of siliceous sponges, their intriguing quartz glass-based spicular system and the existence of a light-generating luciferase [Mu ¨ller WEG et al.(2009) Cell Mol Life Sci66, 537–552], a pro-tein potentially involved in light reception has been identified, cloned and recombinantly expressed from the demosponge Suberites domuncula.

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  • Selenium is a trace element found in freshwater and the marine environ-ment. We show that it plays a major role in spicule formation in the demo-sponge Suberites domuncula. If added to primmorphs, an in vitro sponge cell culture system, it stimulates the formation of siliceous spicules. Using differential display of transcripts, we demonstrate that, after a 72-h expo-sure of primmorphs to selenium, two genes are up-regulated; one codes for selenoprotein M and the other for a novel spicule-associated protein....

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  • Sponges (phylum Porifera) live in a symbiotic relationship with microorganisms, primarily bacteria. Until now, mole-cular proof for the capacity of sponges to recognize fungi in the surroundingaqueousmilieuhas not beenavailable.Here we demonstrate, for the demospongeSuberites domuncula (Porifera, Demospongiae, Hadromerida), a cell surface receptor that recognizes (1fi3)-b-D-glucans, e.g. curdlan or laminarin. This receptor, the (1fi3)-b-D-glucan-binding protein, was identified and its cDNA analysed.

    pdf14p dell39 03-04-2013 10 2   Download

  • Recent studies have shown that the Porifera, with the examples of the demosponges Suberites domunculaand Geodia cydonium, comprise a series of pathways found also in the immune systemofDeuterostomia, suchas vertebrates, but are absent in Protostomia, with insects or nematodes as examples. One pathway is the (2¢)5¢)oligoadenylate syn-thetase [(2±5)A synthetase] system.

    pdf11p research12 29-04-2013 13 1   Download

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