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Self-Assembly of Highly Phosphorylated Silaffins and Their Function in Biosilica Morphogenesis
Abstract
Silaffins are uniquely modified peptides that have been implicated in the biogenesis of diatom biosilica. A method that avoids the harsh anhydrous hydrogen fluoride treatment commonly used to dissolve biosilica allows the extraction of silaffins in their native state. The native silaffins carry further posttranslational modifications in addition to their polyamine moieties. Each serine residue was phosphorylated, and this high level of phosphorylation is essential for biological activity. The zwitterionic structure of native silaffins enables the formation of supramolecular assemblies. Time-resolved analysis of silica morphogenesis in vitro detected a plastic silaffin-silica phase, which may represent a building material for diatom biosilica.
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Citations
Cited by
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Lewis, J. A. (2006) · Advanced Functional Materials · doi:10.1002/adfm.200600434 · Cited by 1,740
Controlling Mineral Morphologies and Structures in Biological and Synthetic Systems
Meldrum, F. C., & Cölfen, H. (2008) · Chemical Reviews · doi:10.1021/cr8002856 · Cited by 1,397
Gower, L. B. (2008) · Chemical Reviews · doi:10.1021/cr800443h · Cited by 1,086
The life of diatoms in the world's oceans
Armbrust, E. V. (2009) · Nature · doi:10.1038/nature08057 · Cited by 1,068
An Overview of Biomineralization Processes and the Problem of the Vital Effect
Weiner, S. (2003) · Reviews in Mineralogy and Geochemistry · doi:10.2113/0540001 · Cited by 1,022
Metadata
- Authors
- Kröger, N., Lorenz, S., Brunner, E., & Sumper, M.
- Venue
- Science
- Published
- 2002-10-18
- Volume
- 298
- Issue
- 5593
- Pages
- 584-586
- ISSN
- 0036-8075 (ISSN-L)
- 1095-9203
- OpenAlex
- W2003721128
- Cited by
- 792
- References
- 0
- FWCI
- 25.94
- Type
- journal article
- Language
- en
- Open access
- closed
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- Kröger, N., Lorenz, S., Brunner, E., & Sumper, M. (2002). Self-Assembly of Highly Phosphorylated Silaffins and Their Function in Biosilica Morphogenesis. Science. https://doi.org/10.1126/science.1076221
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