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Preservation potential of keratin in deep time
Journal article   Open access   Peer reviewed

Preservation potential of keratin in deep time

Mary Higby Schweitzer, Wenxia Zheng, Alison E Moyer, Peter Sjövall and Johan Lindgren
PloS one, v 13(11), pp e0206569-e0206569
2018
PMID: 30485294
url
https://doi.org/10.1371/journal.pone.0206569View
Published, Version of Record (VoR)CC BY V4.0 Open

Abstract

Animals Antibodies Feathers - chemistry Feathers - immunology Feathers - ultrastructure Fossils - ultrastructure Hot Springs Hot Temperature Keratins - chemistry Keratins - immunology Tetrahydroisoquinolines Time Factors
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.

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Collaboration types
Domestic collaboration
International collaboration
Web of Science research areas
Evolutionary Biology
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