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Integration with the human genome of peptide sequences obtained by high-throughput mass spectrometry.

Genome biology | Jan 11, 2005

A crucial aim upon the completion of the human genome is the verification and functional annotation of all predicted genes and their protein products. Here we describe the mapping of peptides derived from accurate interpretations of protein tandem mass spectrometry (MS) data to eukaryotic genomes and the generation of an expandable resource for integration of data from many diverse proteomics experiments. Furthermore, we demonstrate that peptide identifications obtained from high-throughput proteomics can be integrated on a large scale with the human genome. This resource could serve as an expandable repository for MS-derived proteome information.

Pubmed ID: 15642101 RIS Download

Mesh terms: Amino Acid Sequence | Animals | Computational Biology | Databases, Protein | Drosophila melanogaster | Eukaryotic Cells | Genome, Human | Humans | Mass Spectrometry | Peptides | Proteome | Proteomics | Software

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A collection of genome databases for vertebrates and other eukaryotic species with DNA and protein sequence search capabilities. The goal of Ensembl is to automatically annotate the genome, integrate this annotation with other available biological data and make the data publicly available via the web. The range of available data has also expanded to include comparative genomics, variation and regulatory data. Ensembl allows users to: upload and analyze data and save it to an Ensembl account; search for a DNA or protein sequence using BLAST or BLAT; fetch desired data from the public database, using the Perl API; download the databases via FTP in FASTA, MySQL and other formats; and mine Ensembl with BioMart and export sequences or tables in text, HTML, or Excel format. The DNA sequences and assemblies used in the Ensembl genebuild are provided by various projects around the world. Ensembl has entered into an agreement with UCSC and NCBI with regard to sequence identifiers in order to improve consistency between the data provided by different genome browsers. The site also links to the Ensembl blog with updates on new species and sequences as they are added to the database.


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Multi-organism, publicly accessible compendium of peptides identified in a large set of tandem mass spectrometry proteomics experiments. Mass spectrometer output files are collected for human, mouse, yeast, and several other organisms, and searched using the latest search engines and protein sequences. All results of sequence and spectral library searching are subsequently processed through the Trans Proteomic Pipeline to derive a probability of correct identification for all results in a uniform manner to insure a high quality database, along with false discovery rates at the whole atlas level. The raw data, search results, and full builds can be downloaded for other uses. All results of sequence searching are processed through PeptideProphet to derive a probability of correct identification for all results in a uniform manner ensuring a high quality database. All peptides are mapped to Ensembl and can be viewed as custom tracks on the Ensembl genome browser. The long term goal of the project is full annotation of eukaryotic genomes through a thorough validation of expressed proteins. The PeptideAtlas provides a method and a framework to accommodate proteome information coming from high-throughput proteomics technologies. The online database administers experimental data in the public domain. You are encouraged to contribute to the database.


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