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Preservation potential of keratin in deep time
North Carolina State University, USA; North Carolina Museum of Natural Sciences, USA; Lund University, Sweden.
North Carolina State University, USA.
Drexel University, USA.
RISE - Research Institutes of Sweden, Bioscience and Materials, Chemistry and Materials.ORCID iD: 0000-0002-2696-7215
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2018 (English)In: PLoS ONE, ISSN 1932-6203, E-ISSN 1932-6203, Vol. 13, no 11Article in journal (Refereed) Published
Abstract [en]

Multiple fossil discoveries and taphonomic experiments have established the durability of keratin. The utility and specificity of antibodies to identify keratin peptides has also been established, both in extant feathers under varying treatment conditions, and in feathers from extinct organisms. Here, we show localization of feather-keratin antibodies to control and heat-treated feathers, testifying to the repeatability of initial data supporting the preservation potential of keratin. We then show new data at higher resolution that demonstrates the specific response of these antibodies to the feather matrix, we support the presence of protein in heat-treated feathers using ToF-SIMS, and we apply these methods to a fossil feather preserved in the unusual environment of sinter hot springs. We stress the importance of employing realistic conditions such as sediment burial when designing experiments intended as proxies for taphonomic processes occurring in the fossil record. Our data support the hypothesis that keratin, particularly the β-keratin that comprises feathers, has potential to preserve in fossil remains.

Place, publisher, year, edition, pages
2018. Vol. 13, no 11
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Other Earth and Related Environmental Sciences
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URN: urn:nbn:se:ri:diva-36631DOI: 10.1371/journal.pone.0206569Scopus ID: 2-s2.0-85057465903OAI: oai:DiVA.org:ri-36631DiVA, id: diva2:1270875
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This is an open access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.

Available from: 2018-12-14 Created: 2018-12-14 Last updated: 2019-06-19Bibliographically approved

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Sjövall, Peter

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