Ehrlich, Hermann and Deutzmann, Rainer and Brunner, Eike and Cappellini, Enrico and Koon, Hannah and Solazzo, Caroline and Yang, Yue and Ashford, David and Thomas-Oates, Jane and Lubeck, Markus and Baessmann, Carsten and Langrock, Tobias and Hoffmann, Ralf and Woerheide, Gert and Reitner, Joachim and Simon, Paul and Tsurkan, Mikhail and Ereskovsky, Aleksander V. and Kurek, Denis and Bazhenov, Vasily V. and Hunoldt, Sebastian and Mertig, Michael and Vyalikh, Denis V. and Molodtsov, Serguei L. and Kummer, Kurt and Worch, Hartmut and Smetacek, Victor and Collins, Matthew J. (2010) Mineralization of the metre-long biosilica structures of glass sponges is templated on hydroxylated collagen. NATURE CHEMISTRY, 2 (12). pp. 1084-1088. ISSN 1755-4330,
Full text not available from this repository. (Request a copy)Abstract
The minerals involved in the formation of metazoan skeletons principally comprise glassy silica, calcium phosphate or carbonate. Because of their ancient heritage, glass sponges (Hexactinellida) may shed light on fundamental questions such as molecular evolution, the unique chemistry and formation of the first skeletal silica-based structures, and the origin of multicellular animals. We have studied anchoring spicules from the metre-long stalk of the glass rope sponge (Hyalonema sieboldi; Porifera, Class Hexactinellida), which are remarkable for their size, durability, flexibility and optical properties. Using slow-alkali etching of biosilica, we isolated the organic fraction, which was revealed to be dominated by a hydroxylated fibrillar collagen that contains an unusual [Gly-3Hyp-4Hyp] motif. We speculate that this motif is predisposed for silica precipitation, and provides a novel template for biosilicification in nature.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | DIATOM CELL-WALLS; AMINO-ACID; SPICULES; TISSUES; PROTEIN; SILICA; |
| Subjects: | 500 Science > 570 Life sciences |
| Divisions: | Biology, Preclinical Medicine > Institut für Biochemie, Genetik und Mikrobiologie > Lehrstuhl für Biochemie I > Prof. Dr. Rainer Deutzmann |
| Depositing User: | Dr. Gernot Deinzer |
| Date Deposited: | 06 Jul 2020 09:56 |
| Last Modified: | 06 Jul 2020 09:56 |
| URI: | https://pred.uni-regensburg.de/id/eprint/23815 |
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