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  Macromolecular recognition directs calcium ions to coccolith mineralization sites

Gal, A., Wirth, R., Kopka, J., Fratzl, P., Faivre, D., & Scheffel, A. (2016). Macromolecular recognition directs calcium ions to coccolith mineralization sites. Science, 353(6299), 590-593. doi:10.1126/science.aaf7889.

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 Creators:
Gal, Assaf1, Author              
Wirth, Richard, Author
Kopka, Joachim, Author
Fratzl, Peter2, Author              
Faivre, Damien1, Author              
Scheffel, André, Author
Affiliations:
1Damien Faivre, Biomaterialien, Max Planck Institute of Colloids and Interfaces, Max Planck Society, ou_1863290              
2Peter Fratzl, Biomaterialien, Max Planck Institute of Colloids and Interfaces, Max Planck Society, ou_1863294              

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 Abstract: Many organisms form elaborate mineralized structures, constituted of highly organized arrangements of crystals and organic macromolecules. The localization of crystals within these structures is presumably determined by the interaction of nucleating macromolecules with the mineral phase. Here we show that, preceding nucleation, a specific interaction between soluble organic molecules and an organic backbone structure directs mineral components to specific sites. This strategy underlies the formation of coccoliths, which are highly ordered arrangements of calcite crystals produced by marine microalgae. On combining the insoluble organic coccolith scaffold with coccolith-associated soluble macromolecules in vitro, we found a massive accretion of calcium ions at the sites where the crystals form in vivo. The in vitro process exhibits profound similarities to the initial stages of coccolith biogenesis in vivo.

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 Dates: 2016
 Publication Status: Published in print
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 Identifiers: DOI: 10.1126/science.aaf7889
BibTex Citekey: Gal590
PMID: 0496
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Title: Science
Source Genre: Journal
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Publ. Info: Washington, D.C. : American Association for the Advancement of Science
Pages: - Volume / Issue: 353 (6299) Sequence Number: - Start / End Page: 590 - 593 Identifier: ISSN: 0036-8075