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Molecular evidence of keratin and melanosomes in feathers

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(1) The molecular evolution of feathers with direct evidence from fossils, PNAS, 2019, ... (12) Molecular evidence of keratin and melanosomes in feathers of the Early ...

Keratin and Melanosomes Preserved in 130-Million-Year-Old .

“This study is the first to demonstrate evidence for both keratin and melanosomes, using structural, chemical and molecular methods,” Pan says. “These methods have the potential to help us understand — on the molecular level — how and why feathers evolved in these lineages.”

Keratin, Melanosomes Preserved in 130-million-year-old .

New research from North Carolina State University, the Chinese Academy of Sciences and Linyi University has found evidence of original keratin and melanosome preservation in a 130-million-year-old Eoconfuciusornis specimen. The work extends the timeframe in which original molecules may preserve, and demonstrates the ability to distinguish between ancient microstructures in fossils.

130 million-year-old bird fossil yields keratin, melanosom

130 million-year-old bird fossil yields keratin, melanosomes "This study is the first to demonstrate evidence for both keratin and melanosomes, using structural, chemical and molecular methods ...

Keratin and melanosomes preserved in 130-million-year-old .

Eoconfuciusornis. Credit: Dr. Xiaoli Wang New research from North Carolina State University, the Chinese Academy of Sciences and Linyi University has found evidence of original keratin and melanosome preservation in a 130-million-year-old Eoconfuciusornis specimen. The work extends the timeframe in which original molecules may preserve, and demonstrates the ability to distinguish between ...

Molecular evidence of keratin and melanosomes in feathers .

Microbodies associated with feathers of both nonavian dinosaurs and early birds were first identified as bacteria but have been reinterpreted as melanosomes. Whereas melanosomes in modern feathers are always surrounded by and embedded in keratin, melanosomes embedded in keratin in fossils has not been demonstrated.

Keratin and melanosomes preserved in 130-million-year-old .

Keratin and melanosomes preserved in 130-million-year-old bird fossil ... "Molecular evidence of keratin and melanosomes in feathers of the Early Cretaceous bird Eoconfuciusornis" ... Keratin and ...

Keratin and melanosomes preserved in 130-million-year-old .

"This study is the first to demonstrate evidence for both keratin and melanosomes, using structural, chemical and molecular methods," says Pan. ... on the molecular level -- how and why feathers ...

Molecular evidence of keratin and melanosomes in feathers .

Molecular evidence of keratin and melanosomes in feathers of the Early Cretaceous bird Eoconfuciusornis Article (PDF Available) in Proceedings of the National Academy of Sciences 113(49):201617168 ...

Keratin and melanosomes preserved in 130-million-year-old .

Eoconfuciusornis. Credit: Dr. Xiaoli Wang New research from North Carolina State University, the Chinese Academy of Sciences and Linyi University has found evidence of original keratin and melanosome preservation in a 130-million-year-old Eoconfuciusornis specimen. The work extends the timeframe in which original molecules may preserve, and demonstrates the ability to distinguish between ...

Melanosomes or Microbes: Testing an Alternative Hypothesis .

Melanosomes or Microbes: Testing an Alternative Hypothesis for the Origin of Microbodies in Fossil Feathers ... (white, lacking melanosomes) feathers and compared differences in distribution and morphology between microbes and melanosomes with published data for fossil feathers. ... Fraser R. D. B. & Parry D. A. D. Molecular packing in the ...

Study Shows Evidence of Keratin and Melanosome .

The discovery of melanosome and keratin in a 130-million-year-old bird specimen called Eoconfuciusornis lengthens the time frame in which original molecules can be preserved.. Previous studies showed that the feathers of primitive birds and dinosaurs preserved small, round structures interpreted to be melanosomes, which give feathers their color.

Keratin and melanosomes preserved in 130-million-year-old .

"This study is the first to demonstrate evidence for both keratin and melanosomes, using structural, chemical and molecular methods," says Pan. "These methods have the potential to help us understand - on the molecular level - how and why feathers evolved in these lineages." The work appears in Proceedings of the National Academy of Sciences.

Keratin and Melanosomes Preserved in 130-Million-Year-Old .

"This study is the first to demonstrate evidence for both keratin and melanosomes, using structural, chemical and molecular methods," says Pan. "These methods have the potential to help us understand -- on the molecular level -- how and why feathers evolved in these lineages."

Beta-keratin discovery in bird feather fossil may help .

New specimen of Eoconfuciusornis collected from the Early Cretaceous lake deposits in Hebei, northern China.Image by Wang Xiaoli. A team of international scientists led by researchers from the Chinese Academy of Sciences reported recently the oldest fossil evidence of beta-keratin from feathers of a 130 million-year-old basal bird from the famous Early Cretaceous Jehol Biota.

The molecular evolution of feathers with direct evidence .

Pan Y, et al. (2016) Molecular evidence of keratin and melanosomes in feathers of the early Cretaceous bird Eoconfuciusornis . Proc Natl Acad Sci USA 113:E7900 – E7907.

Beta-keratin Discovery in Bird Feather Fossil May Help .

Beta-keratin Discovery in Bird Feather Fossil May Help Identify Paleo Color ... Elena R. Schroeter, Zhonghe Zhou, and Mary H. Schweitzer, 2016, Molecular evidence of keratin and melanosomes in feathers of the Early Cretaceous bird Eoconfuciusornis, www.pnas ... Molecular evidence of keratin and melanosomes in feathers of the Early Cretaceous ...

Molecular composition and ultrastructure of Jurassic .

Molecular composition and ultrastructure of Jurassic paravian feathers ... even in comparison with keratin 9. Furthermore, mature melanosomes are ... A new helical crossed-fibre structure of ß ...

Study Shows Evidence of Keratin and Melanosome .

The discovery of melanosome and keratin in a 130-million-year-old bird specimen called Eoconfuciusornis lengthens the time frame in which original molecules can be preserved.. Previous studies showed that the feathers of primitive birds and dinosaurs preserved small, round structures interpreted to be melanosomes, which give feathers their color.