التفاصيل البيبلوغرافية
| العنوان: |
Elemental characterisation of melanin in feathers via synchrotron X-ray imaging and absorption spectroscopy |
| المؤلفون: |
Edwards, Nicholas P. Univ. of Manchester . School of Earth and Environmental Sciences, Williamson Research Centre for Molecular Environmental Science, Univ. of Manchester . School of Earth and Environmental Sciences, Interdisciplinary Centre for Ancient Life, van Veelen, Arjen Univ. of Manchester . School of Earth and Environmental Sciences, Williamson Research Centre for Molecular Environmental Science, Anné, Jennifer Univ. of Manchester . School of Earth and Environmental Sciences, Williamson Research Centre for Molecular Environmental Science, Manning, Phillip L. Univ. of Manchester . School of Earth and Environmental Sciences, Interdisciplinary Centre for Ancient Life, College of Charleston, SC . Dept. of Geology and Environmental Sciences, Bergmann, Uwe SLAC National Accelerator Lab., Menlo Park, CA . Photon Ultrafast Laser Science and Engineering Inst., Sellers, William I. Univ. of Manchester . School of Earth and Environmental Sciences, Williamson Research Centre for Molecular Environmental Science, Egerton, Victoria M. Univ. of Manchester . School of Earth and Environmental Sciences, Interdisciplinary Centre for Ancient Life, Sokaras, Dimosthenis SLAC National Accelerator Lab., Menlo Park, CA . Stanford Synchrotron Radiation Lightsource, Alonso-Mori, Roberto SLAC National Accelerator Lab., Menlo Park, CA . Linac Coherent Light Source, Wakamatsu, Kazumasa Fujita Health Univ., Aichi . Dept. of Chemistry, School of Health Sciences, Ito, Shosuke Fujita Health Univ., Aichi . Dept. of Chemistry, School of Health Sciences, Wogelius, Roy A. Univ. of Manchester . School of Earth and Environmental Sciences, Williamson Research Centre for Molecular Environmental Science |
| سنة النشر: |
2022 |
| المجموعة: |
SciTec Connect (Office of Scientific and Technical Information - OSTI, U.S. Department of Energy) |
| مصطلحات موضوعية: |
59 BASIC BIOLOGICAL SCIENCES |
| الوصف: |
Melanin is a critical component of biological systems, but the exact chemistry of melanin is still imprecisely known. This is partly due to melanin’s complex heterogeneous nature and partly because many studies use synthetic analogues and/or pigments extracted from their natural biological setting, which may display important differences from endogenous pigments. Here we demonstrate how synchrotron X-ray analyses can non-destructively characterise the elements associated with melanin pigment in situ within extant feathers. Elemental imaging shows that the distributions of Ca, Cu and Zn are almost exclusively controlled by melanin pigment distribution. X-ray absorption spectroscopy demonstrates that the atomic coordination of zinc and sulfur is different within eumelanised regions compared to pheomelanised regions. This not only impacts our fundamental understanding of pigmentation in extant organisms but also provides a significant contribution to the evidence-based colour palette available for reconstructing the appearance of fossil organisms. |
| نوع الوثيقة: |
other/unknown material |
| وصف الملف: |
application/pdf |
| اللغة: |
unknown |
| Relation: |
http://www.osti.gov/servlets/purl/1624857; https://www.osti.gov/biblio/1624857; https://doi.org/10.1038/srep34002 |
| DOI: |
10.1038/srep34002 |
| الاتاحة: |
http://www.osti.gov/servlets/purl/1624857
https://www.osti.gov/biblio/1624857
https://doi.org/10.1038/srep34002 |
| رقم الانضمام: |
edsbas.C436CAB5 |
| قاعدة البيانات: |
BASE |