Project description:The data set contains MS/MS data on teeth extracts for Ancient DNA teeth samples ran in both positive and Negative ionization modes
Project description:Teeth are a well-known source of information for paleoanthropologists. Here, we established the ancient dental metaproteomes in several samples from historic sites. The shotgun metaproteomics analysis relies on a iterative search strategy for the identification of the proteins and their origins.
Project description:Teeth are a well-known source of information for paleoanthropologists. Here, we established the ancient dental metaproteomes in several samples from historic sites. The shotgun metaproteomics analysis relies on a iterative search strategy for the identification of the proteins and their origins.
Project description:Dental calculus is becoming a crucial material in the study of past populations, with increasing interest in its proteomic and genomic content. Here we suggest further development of protocol for analysis of ancient proteins and a combined approach for subsequent ancient DNA extraction. We tested the protocol on recent teeth. We then applied the optimised protocol to ancient teeth to limit the destruction of calculus, as it is a precious and irreplaceable source of dietary, microbiological, and ecological information in the archaeological context. Finally, the applicability of the protocol was proven on samples of ancient calculus.
Project description:In order to research the variation in protein distribution in teeth, proteins were extracted from archaeological (15-18th century, Netherlands) and modern teeth and identified using LC-MS/MS. Of the recovered proteins we then visualised the distribution of collagen type I (both the alpha-1 and -2 chains), alpha-2-HS-glycoprotein, haemoglobin subunit alpha and myosin light polypeptide 6 using MALDI-MSI. We found distinct differences in the spatial distributions of different proteins as well as between some peptides of the same protein. The reason for these differences in protein spatial distribution remain unclear, yet this study highlights the ability of MALDI-MSI for visualisng the spatial distribution of proteins in archaeological biomineralised tissues. Therefore MALDI-MSI might prove a useful tool to improve our understanding of protein preservation as well as aid in deciding sampling strategies.
Project description:The data set contains MS/MS data on teeth extracts for Ancient DNA teeth samples ran in both positive and Negative ionization modes