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A chemical model for the cooperation of sulfates and carboxylates in calcite crystal nucleation: Relevance to biomineralization

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Addadi, L., Moradian, J., Shay, E., Maroudas, N. G., Weiner, S.·1987·Proceedings of the National Academy of Sciences

Abstract

Acidic matrix macromolecules involved in regulation of biological crystal growth often contain aspartic acid-rich domains and covalently bound sulfated polysaccharides. We propose that sulfates and β-sheet structured carboxylates cooperate in oriented calcite crystal nucleation. The sulfates concentrate calcium, creating the supersaturation necessary for nucleation on the structured carboxylate domains. An artificial model, composed of sulfonated polystyrene surfaces and adsorbed β-sheet poly(aspartate), demonstrates that the two components indeed act cooperatively with respect to two independent assays, both by induction of calcite nucleation off the (001) plane and by calcium association. Evidence is presented that a purified organic matrix acidic glycoprotein from mollusk shells may behave in vitro in a similar way.

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Metadata

Authors
Addadi, L., Moradian, J., Shay, E., Maroudas, N. G., & Weiner, S.
Venue
Proceedings of the National Academy of Sciences
Published
1987-05
Volume
84
Issue
9
Pages
2732-2736
ISSN
  • 0027-8424 (ISSN-L)
  • 1091-6490
OpenAlex
W2091969646
Cited by
563
References
0
FWCI
9.15
Type
journal article
Language
en
Open access
green

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CoChat. (2026). Citation check: A chemical model for the cooperation of sulfates and carboxylates in calcite crystal nucleation: Relevance to biomineralization. https://app.cochat.ai/papers/10.1073/pnas.84.9.2732
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Addadi, L., Moradian, J., Shay, E., Maroudas, N. G., & Weiner, S. (1987). A chemical model for the cooperation of sulfates and carboxylates in calcite crystal nucleation: Relevance to biomineralization. Proceedings of the National Academy of Sciences. https://doi.org/10.1073/pnas.84.9.2732

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Contains information from the Semantic Scholar Academic Graph Datasets, made available under the ODC Attribution License (ODC-BY 1.0).

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