標題: Evidence of preserved collagen in an Early Jurassic sauropodomorph dinosaur revealed by synchrotron FTIR microspectroscopy
作者: Lee, Yao-Chang
Chiang, Cheng-Cheng
Huang, Pei-Yu
Chung, Chao-Yu
Huang, Timothy D.
Wang, Chun-Chieh
Chen, Ching-lue
Chang, Rong-Seng
Liao, Cheng-Hao
Reisz, Robert R.
應用化學系
Department of Applied Chemistry
公開日期: 31-一月-2017
摘要: Fossilized organic remains are important sources of information because they provide a unique form of biological and evolutionary information, and have the long-term potential for genomic explorations. Here we report evidence of protein preservation in a terrestrial vertebrate found inside the vascular canals of a rib of a 195-million-year-old sauropodomorph dinosaur, where blood vessels and nerves would normally have been present in the living organism. The in situ synchrotron radiation-based Fourier transform infrared (SR-FTIR) spectra exhibit the characteristic infrared absorption bands for amide A and B, amide I, II and III of collagen. Aggregated haematite particles (alpha-Fe2O3) about 6 similar to 8 mu m in diameter are also identified inside the vascular canals using confocal Raman microscopy, where the organic remains were preserved. We propose that these particles likely had a crucial role in the preservation of the proteins, and may be remnants partially contributed from haemoglobin and other iron-rich proteins from the original blood.
URI: http://dx.doi.org/10.1038/ncomms14220
http://hdl.handle.net/11536/133202
ISSN: 2041-1723
DOI: 10.1038/ncomms14220
期刊: NATURE COMMUNICATIONS
Volume: 8
起始頁: 0
結束頁: 0
顯示於類別:期刊論文


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