Enzymatic phosphatization of fish scales-a pathway for fish fossilization.
Journal
Scientific reports
ISSN: 2045-2322
Titre abrégé: Sci Rep
Pays: England
ID NLM: 101563288
Informations de publication
Date de publication:
09 Apr 2024
09 Apr 2024
Historique:
received:
03
01
2024
accepted:
05
04
2024
medline:
10
4
2024
pubmed:
10
4
2024
entrez:
9
4
2024
Statut:
epublish
Résumé
Phosphatized fish fossils occur in various locations worldwide. Although these fossils have been intensively studied over the past decades they remain a matter of ongoing research. The mechanism of the permineralization reaction itself remains still debated in the community. The mineralization in apatite of a whole fish requires a substantial amount of phosphate which is scarce in seawater, so the origin of the excess is unknown. Previous research has shown that alkaline phosphatase, a ubiquitous enzyme, can increase the phosphate content in vitro in a medium to the degree of saturation concerning apatite. We applied this principle to an experimental setup where fish scales were exposed to commercial bovine alkaline phosphatase. We analyzed the samples with SEM and TEM and found that apatite crystals had formed on the remaining soft tissue. A comparison of these newly formed apatite crystals with fish fossils from the Solnhofen and Santana fossil deposits showed striking similarities. Both are made up of almost identically sized and shaped nano-apatites. This suggests a common formation process: the spontaneous precipitation from an oversaturated solution. The excess activity of alkaline phosphatase could explain that effect. Therefore, our findings could provide insight into the formation of well-preserved fossils.
Identifiants
pubmed: 38594297
doi: 10.1038/s41598-024-59025-3
pii: 10.1038/s41598-024-59025-3
doi:
Types de publication
Journal Article
Langues
eng
Sous-ensembles de citation
IM
Pagination
8347Subventions
Organisme : Deutsche Forschungsgemeinschaft
ID : 348043586, GA 2688/1-1
Organisme : Deutsche Forschungsgemeinschaft
ID : 348043586, BI 504/15-1
Informations de copyright
© 2024. The Author(s).
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