Silicatein is an enzyme of silicate-forming organisms used for the
synthesis of their silicate scaffold. The present invention relates to
the use of highly-expressed and highly active recombinant silicatein,
silicatein isolated from natural sources after gene induction as well as
silicatein-fusion proteins for the synthesis of amorphous silicon dioxide
(silicic acids and silicates), siloxanes as well as modification of these
compounds and their technical use.