All articles tagged with #paleoproteomics
A paleoproteomics study of dental enamel from 23 teeth across at least 20 Homo naledi individuals from South Africa’s Rising Star cave found no male AMELY markers, suggesting the fossils may all be female and raising new questions about variation, burial practices, and Homo naledi’s place in human evolution.
A paleoproteomics analysis of 23 Homo naledi teeth from the Rising Star Cave found no AMELY (Y chromosome) and AMELX in all samples, suggesting the known individuals were all genetically female. The result supports the idea that the Rising Star remains may reflect intentional burial and hints at gender identity in this species, while noting that a rare AMELY deletion could complicate the picture. The study also shows potential for ancient proteins to illuminate early hominin relationships and points to future DNA sequencing as methods improve.
A paleoproteomics study of 20 Homo naledi teeth from the Rising Star cave in South Africa found all samples belonged to females, suggesting a female-biased representation at the site. The team used amelogenin protein markers to infer sex, but the absence of a Y-chromosome signal could also reflect a mutation or deletion of the AMELY gene. The fossils, dated roughly 335,000–241,000 years old, raise questions about sex-segregated mortuary practices or other biases, though researchers caution that a single-site, small-sample finding is not definitive and alternative explanations remain possible.
Proteomic analysis of 400,000-year-old Homo erectus teeth uncovers a unique amino‑acid variant shared with Denisovans and present in modern SE Asian and Oceanian populations (about 21% in the Philippines, ~1% in India), suggesting interbreeding and a mosaic ancestry rather than a single lineage. The study highlights how paleoproteomics can reveal genetic connections from old hominin lineages and points to a broader pattern of admixture among ancient humans.
A Denisovan jawbone found 60–120 meters deep off the coast of Taiwan and identified using paleoproteomics confirms Denisovans’ presence in warmer coastal Asia and suggests they thrived in diverse environments beyond Siberia. Dating is uncertain, estimated between 10,000 and 190,000 years ago, highlighting their adaptability and potential interactions with other hominins.
Scientists used paleoproteomics to analyze 2-million-year-old teeth of Paranthropus robustus, revealing insights into its sex, genetic variation, and suggesting a more complex, diverse early human family tree, marking a significant advancement in understanding human origins.
Scientists have successfully extracted ancient proteins from a 24 million-year-old rhino fossil, demonstrating the potential of paleoproteomics to study fossils beyond the reach of ancient DNA, and suggesting that retrieving proteins from dinosaur fossils might be possible in the future.
Scientists used paleoproteomics to analyze proteins from 2-million-year-old teeth of Paranthropus robustus, revealing new insights into its diversity, sex, and potential multiple species, thus advancing understanding of human evolutionary history.
Researchers confirmed that the nearly complete Harbin skull, dating back at least 146,000 years, belongs to the Denisovan lineage, expanding understanding of their geographic range and morphology through advanced protein and DNA analysis, and linking it directly to Denisovan populations.
A study using advanced paleoproteomic techniques on dinosaur fossils, including soft tissue analysis, suggests that preserved proteins and cellular structures can provide insights into the evolution of diseases like cancer, emphasizing the importance of soft tissue preservation for future medical research.
New research suggests that clusters of shallow pits on the enamel of teeth from Paranthropus relatives are likely genetic markers, not disease, providing potential insights into human evolutionary relationships and aiding in fossil identification, though further research is needed.
Recent analysis of ancient tooth enamel proteins suggests that Paranthropus robustus may not have been a single species, revealing hidden genetic variation and challenging previous notions of its uniformity, with implications for understanding early human evolution.
Researchers analyzed 2.2 million-year-old teeth from South Africa using paleoproteomics, revealing potential new insights into early human relatives, including possible new species and more accurate sex determination, challenging previous assumptions based on morphology.
Researchers have successfully extracted intact and biologically active antibodies from 800-year-old teeth, providing a new method to identify pathogens that our ancestors encountered. This breakthrough in paleoproteomics could help understand the development of human antibodies throughout history and shed light on ancient diseases. The antibodies recovered from the teeth were able to recognize the Epstein-Barr virus, demonstrating their potential to study diseases from different time periods. This study sets a precedent for further research into the evolution of diseases and our immune system.