Evidence for a Liquid Precursor to Biomineral Formation
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https://figshare.com/articles/dataset/Evidence_for_a_Liquid_Precursor_to_Biomineral_Formation/16713088
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资源简介：
The crystals in animal
biominerals, such as sea urchin spines,
mollusk shells, and coral skeletons, form by attachment of amorphous
particles that subsequently crystallize. Do these solid amorphous
precursor particles have liquid precursors? Polymer-induced liquid
precursors (PILP) or prenucleation clusters coalescing into a liquid
precursor to calcium carbonate crystallization have been observed
extensively in synthetic systems. Molecular dynamics simulations also
predict liquid–liquid phase separation. However, evidence for
liquid precursors in natural biominerals remains elusive. Here, we
present Scanning or PhotoEmission Electron Microscopy (SEM or PEEM)
evidence consistent with a dense liquid-like precursor in regenerating
sea urchin spines. The observed precursor originates in tissue and
ultimately transforms into a single crystal of calcite (CaCO3) with complex stereom morphology.
创建时间：
2021-09-30
