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A perfectly periodic three-dimensional protein/silica mesoporous structure produced by an organism

: Zlotnikov, I.; Werner, P.; Blumtritt, H.; Graff, A.; Dauphin, Y.; Zolotoyabko, E.; Fratzl, P.


Advanced Materials 26 (2014), Nr.11, S.1682-1687
ISSN: 0935-9648
ISSN: 1521-4095
Fraunhofer IWM ( IMWS) ()

The discovery of perfectly ordered 3D mesoporous protein/silica structure in the axial filament of the marine sponge Monorhaphis chuni is reported. The structure belongs to body-centered tetragonal symmetry system (a = 9.88 nm, c = 10.83 nm) and comprises interconnecting lattices of protein and silica, templated by the self-assembled, enzymatically active protein-silicatein, whose primary function is the precipitation of silica.