Ancient Proteins Identify Denisovan Remains in Southwest China

Ancient proteins extracted from bone fragments and teeth excavated in Southwest China have been used to identify Denisovan remains, according to research published online on September 9, 2026, in the journal Nature. This discovery is significant as it provides crucial insights into the evolution and phenotypic characteristics of Denisovans, a hominin group that coexisted with Neanderthals and early modern humans. The findings also address a notable geographical gap in the known distribution of Denisovan populations, suggesting a wider presence in Asia than previously understood.

The proteomic analysis involved the identification and sequencing of proteins preserved within the fossilized remains. Proteins, particularly collagen, are more resilient to degradation over long periods than DNA, making them a valuable tool for identifying ancient hominin species, especially from environments where DNA preservation is poor. The research team successfully identified specific protein sequences characteristic of Denisovans, allowing them to attribute the excavated materials to this extinct hominin group. This method complements traditional morphological and genetic analyses, offering a new avenue for studying ancient human relatives.

Denisovans were first identified in 2010 through genetic analysis of a finger bone found in the Denisova Cave in Siberia. Since then, evidence of their existence has been found in various parts of Asia, including Tibet and Southeast Asia. However, the specific region of Southwest China where these new remains were found represents a significant expansion of their documented range. Understanding the geographical spread of Denisovans is key to reconstructing their interactions with other hominin groups and their role in human evolution. The phenotypic information derived from the protein analysis may also shed light on their physical appearance, which is largely unknown due to the scarcity of fossil evidence.

The excavation site in Southwest China yielded several bone fragments and teeth, which underwent rigorous proteomic analysis. The Nature publication, with the DOI 10.1038/s41586-026-10976-9, details the methodology and findings of this study. The identification of Denisovan presence in this region suggests that they may have inhabited diverse ecological niches and adapted to a range of environmental conditions. Further research on these and other ancient protein samples could unlock more secrets about the complex tapestry of human origins and the evolutionary journey of our extinct relatives.