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Johan Lindgren

Johan Lindgren

Senior lecturer

Johan Lindgren

Preservation potential of keratin in deep time

Author

  • Mary Higby Schweitzer
  • Wenxia Zheng
  • Alison E. Moyer
  • Peter Sjövall
  • Johan Lindgren

Summary, in English

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.

Department/s

  • Lithosphere and Biosphere Science

Publishing year

2018-11-28

Language

English

Publication/Series

PLoS ONE

Volume

13

Issue

11

Document type

Journal article

Publisher

Public Library of Science

Topic

  • Geology

Status

Published

ISBN/ISSN/Other

  • ISSN: 1932-6203