Growth and regrowth of adult sea urchin spines involve hydrated and anhydrous amorphous calcium carbonate precursors.
Anhydrous amorphous calcium carbonate
Ca L2,3-edge spectra
Hydrated amorphous calcium carbonate
PhotoEmission Electron spectroMicroscopy
Sea urchin spine regeneration
Journal
Journal of structural biology: X
ISSN: 2590-1524
Titre abrégé: J Struct Biol X
Pays: United States
ID NLM: 101761384
Informations de publication
Date de publication:
Historique:
received:
22
11
2018
revised:
27
01
2019
accepted:
28
01
2019
entrez:
11
7
2020
pubmed:
8
2
2019
medline:
8
2
2019
Statut:
epublish
Résumé
In various mineralizing marine organisms, calcite or aragonite crystals form through the initial deposition of amorphous calcium carbonate (ACC) phases with different hydration levels. Using X-ray PhotoEmission Electron spectroMicroscopy (X-PEEM), ACCs with varied spectroscopic signatures were previously identified. In particular, ACC type I and II were recognized in embryonic sea urchin spicules. ACC type I was assigned to hydrated ACC based on spectral similarity with synthetic hydrated ACC. However, the identity of ACC type II has never been unequivocally determined experimentally. In the present study we show that synthetic anhydrous ACC and ACC type II identified here in sea urchin spines, have similar Ca
Identifiants
pubmed: 32647811
doi: 10.1016/j.yjsbx.2019.100004
pii: S2590-1524(19)30002-9
pii: 100004
pmc: PMC7337052
doi:
Types de publication
Journal Article
Langues
eng
Pagination
100004Informations de copyright
© 2019 The Authors.
Déclaration de conflit d'intérêts
None.
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