Literature DB >> 29711800

Efficient Catalysis of Polysiloxane Synthesis by Silicatein α Requires Specific Hydroxy and Imidazole Functionalities.

Yan Zhou1, Katsuhiko Shimizu1, Jennifer N Cha2, Galen D Stucky3, Daniel E Morse4.   

Abstract

A protein isolated from a biosilica (shown schematically) catalyzes alkoxysilane polycondensation at neutral pH values and low temperatures. Replacement of either of two specific side chain functionalities (Ser-26 and His-165) significantly diminishes catalysis, supporting a reaction mechanism analogous to that of a well-known enzyme that is highly homologous to the silica protein. These results may be useful in the development of synthetic catalysts for environmentally benign synthesis of polysiloxanes. © 1999 WILEY-VCH Verlag GmbH, Weinheim, Fed. Rep. of Germany.

Entities:  

Keywords:  Enzyme catalysis; Polymerizations; Polysiloxanes; Proteins; Silica

Year:  1999        PMID： 29711800     DOI： 10.1002/(SICI)1521-3773(19990315)38:6<779::AID-ANIE779>3.0.CO;2-#

Source DB:  PubMed          Journal:  Angew Chem Int Ed Engl        ISSN： 1433-7851            Impact factor:   15.336


  7 in total

1.  Structural characterization of siliceous spicules from marine sponges.

Authors:  Gianluca Croce; Alberto Frache; Marco Milanesio; Leonardo Marchese; Mauro Causà; Davide Viterbo; Alessia Barbaglia; Vera Bolis; Giorgio Bavestrello; Carlo Cerrano; Umberto Benatti; Marina Pozzolini; Marco Giovine; Heinz Amenitsch
Journal:  Biophys J       Date:  2004-01       Impact factor: 4.033

2.  Evolutionary selection of enzymatically synthesized semiconductors from biomimetic mineralization vesicles.

Authors:  Lukmaan A Bawazer; Michi Izumi; Dmitriy Kolodin; James R Neilson; Birgit Schwenzer; Daniel E Morse
Journal:  Proc Natl Acad Sci U S A       Date:  2012-06-07       Impact factor: 11.205

Review 3.  Enzymatic production of biosilica glass using enzymes from sponges: basic aspects and application in nanobiotechnology (material sciences and medicine).

Authors:  Heinz C Schröder; David Brandt; Ute Schlossmacher; Xiaohong Wang; Muhammad Nawaz Tahir; Wolfgang Tremel; Sergey I Belikov; Werner E G Müller
Journal:  Naturwissenschaften       Date:  2007-01-11

4.  Silicatein filaments and subunits from a marine sponge direct the polymerization of silica and silicones in vitro.

Authors:  J N Cha; K Shimizu; Y Zhou; S C Christiansen; B F Chmelka; G D Stucky; D E Morse
Journal:  Proc Natl Acad Sci U S A       Date:  1999-01-19       Impact factor: 11.205

5.  Efficient silica synthesis from tetra(glycerol)orthosilicate with cathepsin- and silicatein-like proteins.

Authors:  Natalia V Povarova; Nikolay A Barinov; Mikhail S Baranov; Nadezhda M Markina; Anna M Varizhuk; Galina E Pozmogova; Dmitry V Klinov; Valery B Kozhemyako; Konstantin A Lukyanov
Journal:  Sci Rep       Date:  2018-11-13       Impact factor: 4.379

6.  Natural hybrid silica/protein superstructure at atomic resolution.

Authors:  Stefan Görlich; Abisheik John Samuel; Richard Johannes Best; Ronald Seidel; Jean Vacelet; Filip Karol Leonarski; Takashi Tomizaki; Bernd Rellinghaus; Darius Pohl; Igor Zlotnikov
Journal:  Proc Natl Acad Sci U S A       Date:  2020-11-23       Impact factor: 11.205

Review 7.  Inorganic Polymeric Materials for Injured Tissue Repair: Biocatalytic Formation and Exploitation.

Authors:  Heinz C Schröder; Xiaohong Wang; Meik Neufurth; Shunfeng Wang; Rongwei Tan; Werner E G Müller
Journal:  Biomedicines       Date:  2022-03-11
  7 in total

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