ArticleAnalytical and bioanalytical chemistry2025
Polyamines of unique structure are integrated in Synura echinulata biosilica.
Article in Analytical and bioanalytical chemistry, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. An erratum has been issued. Cited by 2 papers.
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The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
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Who cites it
2 citing papers in PubMed.
- Enhanced cellular polyamine pools induced by different nitrogen substrates modify silicification of diatom Paralia sulcata.Communications biology · 2026Article
- Macromolecular Condensates as Tunable Scaffolds for Bio-Inspired Silica Hybrids.Angewandte Chemie (International ed. in English) · 2026Article
Corrections and comments
- Erratum issued
Authors and funding
3 authors.
Funding
Abstract
Unicellar, biomineralizing algae like diatoms or Synurales are ubiquitous in various habitats all over the world and have an outstanding role in different biogeochemical cycles. They are well known for their elaborate nanopatterned cell structures consisting of amorphous biosilica, which is intracellularly synthesized. Special biomolecules assist in the silica formation. In particular, species-specific long-chain polyamines (LCPAs) are commonly found in diatom biosilica and seem to play a special role due to their ability to self-assemble and induce silica precipitation. In contrast to diatoms, no species from the order Synurales have been tested yet for the presence of LCPAs. Therefore, the present work deals with the analysis of Synura echinulata biosilica using a novel HPLC-HR-MS/MS method. The presence of unique LCPAs is shown, and their structure is elucidated via MS/MS experiments. LCPAs from S. echinulata are based on amino butyl repeat units-in contrast to previously described LCPAs from other organisms, which are mostly based on amino propyl repeat units. The ubiquitous presence of LCPAs in biomineralizing species strongly indicates a general role of LCPAs in silica biomineralization.
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