Ontology highlight
ABSTRACT:
PROVIDER: PRJNA1256124 | ENA |
REPOSITORIES: ENA
Similar Datasets
Project description:Ancient RNA expression profiles from the extinct woolly mammoth
| PRJNA1190340 | ENA
Project description:Analyses of ancient DNA typically involve sequencing the surviving short oligonucleotides, and aligning to genome assemblies from related, modern species. Here, we report that skin from a female woolly mammoth (†Mammuthus primigenius) which died 52,000 years ago retained its ancient genome architecture. We use PaleoHi-C to map chromatin contacts and assemble its genome, yielding twenty-eight chromosome-length scaffolds. Chromosome territories, compartments, loops, Barr bodies, and inactive-X chromosome (Xi) superdomains persist. The active and inactive genome compartments in mammoth skin more closely resemble Asian elephant skin than other elephant tissues. Our analyses uncover new biology. Differences in compartmentalization reveal genes whose transcription was potentially altered in mammoths vs. elephants. Mammoth Xi has a tetradic architecture, not bipartite like human and mouse. We hypothesize that, shortly after this mammoth’s death, the sample spontaneously freeze-dried in the Siberian cold, leading to a glass transition that preserved subfossils of ancient chromosomes at nanometer scale.
2024-05-22 | GSE268050 | GEO
Project description:The woolly mammoth is an extinct mammal and a subject for paleogenomic studies
| PRJNA68357 | ENA
Project description:Low coverage shotgun sequencing of woolly mammoth and ancient canid samples.
| PRJEB41038 | ENA
Project description:The 28,000-year-old remains of a woolly mammoth, named ‘Yuka’, were found in Siberian permafrost. We performed proteomic analyses of muscle and bone marrow samples obtained from the remains to gain information about the repertoire and modifications of proteins.
2019-03-13 | PXD012741 | Pride
Project description:Gene expression profiles in CLL
2025-01-24 | E-GEOD-22529 | ExpressionAtlas
Project description:Woolly Mammoth whole genome sequencing project
| PRJNA31119 | ENA
Project description:Sequencing of woolly mammoth environmental sample
| PRJNA16317 | ENA
Project description:Ancient DNA (aDNA) sequencing has enabled reconstruction of speciation, migration, and admixture events for extinct taxa. Outside the permafrost, however, irreversible aDNA post-mortem degradation has so far limited aDNA recovery to the past ~0.5 million years (Ma). Contrarily, multiple analyses suggested the presence of protein residues in Cretaceous fossil remains. Similarly, tandem mass spectrometry (MS) allowed sequencing ~1.5 million year (Ma) old collagen type I (COL1), though with limited phylogenetic use. In the absence of molecular evidence, the speciation of several Early and Middle Pleistocene extinct species remain contentious. In this study, we address the phylogenetic relationships of the Eurasian Pleistocene Rhinocerotidae using a ~1.77 Ma old dental enamel proteome of a Stephanorhinus specimen from the Dmanisi archaeological site in Georgia (South Caucasus). Molecular phylogenetic analyses place the Dmanisi Stephanorhinus as a sister group to the woolly (Coelodonta antiquitatis) and Merck’s rhinoceros (S. kirchbergensis) clade. We show that Coelodonta evolved from an early Stephanorhinus lineage and that the latter includes at least two distinct evolutionary lines. As such, the genus Stephanorhinus is currently paraphyletic and requires systematic revision. We demonstrate that Early Pleistocene dental enamel proteome sequencing overcomes the limits of ancient collagen- and aDNA-based phylogenetic inference. It also provides additional information about the sex and taxonomic assignment of the specimens analysed. Dental enamel, the hardest tissue in vertebrates, is highly abundant in the fossil record. Our findings reveal that palaeoproteomic investigation of this material can push biomolecular investigation further back into the Early Pleistocene.
2019-09-11 | PXD011008 | Pride